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AGENDA
REGULAR MEETING OF
AZUSA UTILITY BOARD
AZUSA LIGHT & WATER FEBRUARY 22, 2010
729 N. AZUSA AVENUE 6:30 P.M.
AZUSA, CA 91702
AZUSA UTILITY BOARD
URIEL E. MACIAS
CHAIRPERSON
ROBERT GONZALES JOSEPH R. ROCHA
VICE CHAIRPERSON BOARD MEMBER
KEITH HANKS ANGEL CARRILLO
BOARD MEMBER BOARD MEMBER
6:30 P.M. Convene to Regular Meeting of the Azusa Utility Board
• Call to Order
• Pledge to the Flag
• Roll Call
A. PUBLIC PARTICIPATION
1. (Person/Group shall be allowed to speak without interruption up to five (5) minutes maximum time,
subject to compliance with applicable meeting rules. Questions to the speaker or responses to the
speaker's questions or comments shall be handled after the speaker has completed his/her comments.
Public Participation will be limited to sixty(60) minutes time.)
1 001
B. UTILITIES DIRECTOR COMMENTS
C. UTILITY BOARD MEMBER COMMENTS
1. Approval of Certificates of Recognition to Azusa High School to be presented at the March 1, 2010
City Council Meeting.
D. CONSENT CALENDAR
The Consent Calendar adopting the printed recommended action will be enacted with one vote. If Staff or
Councilmembers wish to address any item on the Consent Calendar individually, it will be considered under
SPECIAL CALL ITEMS.
1. Minutes. Recommendation: Approve minutes of regular meeting on January 25, 2010 as written.
Y.M
Jan Minutes.pdf
2. Electric Project LD2010-2 Contract Award. Recommendation: Award the contract for Project
LD2010-2 for furnishing and installing underground electric substructures at Lark Ellen and Gladstone to
Perry C. Thomas, Incorporated in amount of$95,016.90.
Elec-UG-Project.pdf
3. Contract Amendment for Hall & Foreman. Recommendation: Approve the amendment to Hall &
Foreman contract in amount of $23,625 for additional design engineering services for Project W-265,
Pipeline Replacement Project.
Hall&Foreman Hall&Foreman
CO.pdf Ltr.pdf
4. Contract Amendment for J. Fletcher Creamer & Sons, Incorporated. Recommendation: Approve
the amendment of J. Fletcher Creamer & Sons, Incorporated contract for additional work for Project W-
263,Water Main Cement Mortar Lining Project in amount of$290,000.
Fletcher
Creamer.pdf
2 002
5. Solar Partnership Funding Modifications. Recommendation: Approve modifications to the
Distributed Solar Partnership Program Funding in compliance with Senate Bill 1 (SB 1).
EMI
Modified Solar
Program pdf
6. Southern California Public Power Authority (SCPPA) Ice Energy Demand Side Management
Project. Recommendation: Approve participation in SCPPA's Ice Energy Demand Response Program.
teml-
,eves
SCPPA Ice Anaheim
Energy.pdf Program pdf
E. STAFF REPORTS/COMMUNICATIONS
1. Quarterly Financial Report for Water and Electric Funds
Qtrly Fin Rpt.pdf
F. ADJOURNMENT
1. Adjournment.
"In compliance with the Americans with Disabilities Act, if you need special assistance to participate in a city
meeting, please contact the City Clerk at 626-812-5229. Notification three (3) working days prior to the
meeting or time when special services are needed will assist staff in assuring that reasonable arrangements
can be made to provide access to the meeting."
"In compliance with Government Code Section 54957.5, agenda materials are available for inspection by
members of the public at the following locations: Azusa City Clerk's Office - 213 E. Foothill Boulevard,
Azusa City Library- 729 N. Dalton Avenue, and Azusa Light& Water-729 N.Azusa Avenue,Azusa CA."
3 003
1
AZUS
tIG'NT A 'A'ATIA
CITY OF AZUSA
MINUTES OF THE REGULAR MEETING
OF THE AZUSA UTILITY BOARD/CITY COUNCIL
MONDAY,JANUARY 25,2010—6:30 P.M.
The Utility Board/City Council of the City of Azusa met in regular session,at the above date and time,at the
Azusa Light and Water Conference Room, located at 729 N. Azusa Avenue,Azusa, California.
Chairman Pro-Tern Gonzales called the meeting to order. Call to Order
ROLL CALL Roll Call
PRESENT: BOARD MEMBERS: GONZALES, CARRILLO,ROCHA
ABSENT: BOARD MEMBERS: MACIAS,HANKS
ALSO PRESENT: Also Present
City Attorney Ferre,City Manager Delach,Assistant City Manager Makshanoff,Director of Utilities Morrow,
Assistant to Utilities Director Kalscheuer, Assistant Director of Water Operations Anderson, Distribution
Supervisor Kjar, Assistant Director-Customer Care & Solutions Vanca, Senior Electric Engineer Langit,
Electric Engineer Associate Vuong, City Clerk Mendoza,Deputy City Clerk Toscano.
PUBLIC PARTICIPATION
Pub Part
None.
UTILITIES DIRECTOR COMMENTS Dir Comments
Director of Utilities Morrow stated that representatives of Lindsey Manufacturing have an item on the agenda G. Morrow
and introduced Distribution Supervisor Kjar who stated that Lindsey is preparing to do research on and testing D. Kjar
of one of their new products currently being developed for power lines and would like Azusa Light and Water Re: Lindsey
to attach experimental monitoring devices on the Azusa-owned portion of the power lines to verify and test if Manufacturing
their new innovative product would perform in actual conditions as designed, it is item D-2 on the agenda.
UTILITY BOARD MEMBER COMMENTS Brd Mbr Cmts
Board Member Gonzales asked that the meeting be adjourned in memory of Aurora Carrillo Wilson,mother of Adjourn in
Chairman Uriel Macias. Memory
A. Carrillo
Wilson
004
The CONSENT CALENDAR consisting of Items D-1 through D-7, was approved by motion of Board Consent Cal
Member Rocha, seconded by Board Member Carrillo and unanimously*carried D-1 & 2
1. The minutes of the regular meeting of November 23, 2009, were approved as written. Min appvd
2. SPECIAL CALL ITEM. Spec Call
3. Approval was given for the proposal by Utility Financial Services(UFS)to conduct financial review of UFS Financial
electric fund;and the City Manager was authorized to execute professional services agreement for not- Review of
to-exceed amount of$17,500 for phase one services. Electric Fund
4. Plans and specifications for Project LD2010-2 to furnish and install underground electric substructures Plans &Specs
on Lark Ellen south of Gladstone were approved and the City Clerk was authorized to advertise for bids. Proj DL2010-2
5. The scope of work for an Electric Network Supervisory Control and Data Acquisition System(SCADA) SCADA appvd
was approved and staff was authorized to prepare, issue, and solicit RFP. RFP
6. Approval was given for a one-time payment in amount of$172,844.72 to SCE for the certified metering One time pymt
and communication facilities installed at the Azusa and Kirkwall Substations; and the following SCE
resolution was adopted:
A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF AZUSA,CALIFORNIA,AMENDING Res. 10-C7
THE FISCAL YEAR 2009-2010 OPERATING BUDGET FOR THE ELECTRIC UTILITY TO FUND Amend
A PAYMENT TO SOUTHERN CALIFORNIA EDISON FOR METERING SERVICES PROVIDED Bdgt Elect
AT ELECTRIC SUBSTATIONS. Fund
7. Approval was given to extend contract for Civiltec Engineers for South Reservoir Demolition and Design Extend Civiltec
Services to March 31, 2010. Engr
SPECIAL CALL ITEMS Special Call
Research Participation and Confidentiality Agreement with Lindsey Manufacturing.
Board Member Rocha questioned inconsistencies in the staff report and agreement regarding costs bore by Agmt Lindsey
City and/or Lindsey. Director of Utilities Morrow responded that there would be no cost but if there was, Rocha
under the agreement, Lindsey will be responsible. City Attorney Ferre concurred that under the agreement Questions
Lindsey will bare cost, if any and City Manager Delach also agreed.
Moved by Board Member Carrillo,seconded by Board Member Rocha and unanimously*carried that Staff be Research
authorized to enter into Research Participation and Confidentiality Agreement with Lindsey Manufacturing; Participation
and that the Director of Utilities be authorized to sign said agreement,subject to final review and approval by &Agmt w/
City Attorney. Lindsey Man.
SCHEDULED ITEMS Sched Items
Assistant to Utilities Director Kalscheuer presented request for funding by California Resource Connections, Request
for Litter Clean-up and Smart Gardening Workshop, stating that the Smart Gardening workshop will be on Funding
Saturday,April 10,2010,and is in the amount of$7,425 and$3,900 will be for compost bins,so the request California
is lower than last year. The Think River!event will be held on Saturday,April 17,2010,and be in the amount Resource
of$7,400,exactly the same as last year.He stated that the State reduced this grant 95%this year due to budget Connections
cuts and so the water fund is proposed as a changed funding source.
Moved by Board Member Carrillo,seconded by Board Member Rocha and unanimously*carried to approve a Funding
funding request from California Resources Connections,Incorporated(CRC)to conduct said environmental Approved
programs; and authorize payments to CRC in amount of$7,400 from Water Fund and$7,425 from AB 939 Environmental
Fee Funds. Programs
01/25/10 PAGE TWO
005
Director of Utilities Morrow presented item regarding an initiative scheduled for the June 8th Ballot Measure Dir of Util
entitled "New Two-Thirds Requirement for Local Public Electricity Providers Act", stating that PG&E is New Two-
behind the Act to reduce competition. It would impact the ability of public-owned electric utilities to expand Thirds Rqmt
service beyond their current boundaries and would impact the ability of cities and counties to engage in Local Public
community choice aggregation. Discussion was held regarding impacts of the issue. Elec Prov Act
Moved by Board Member Carrillo,seconded by Board Member Rocha and unanimously*carried to adopt an Oppose
OPPOSE position on the "New Two-Thirds Requirement for Local Public Electricity Providers Act" New Two-
scheduled for vote on the June 8, 2010 state-wide ballot. Thirds,etc.
Director of Utilities Morrow presented item regarding EPA Endangerment Finding Related to Greenhouse Dir of Util
Gases,stating that in December EPA found that GHG are an endangerment and new power plants are subject Greenhouse
to laws, regulations and control under Clean Air Act. Gas
Moved by Board Member Rocha,seconded by Board Member Carrillo and unanimously*carried to adopt an Oppose
OPPOSE position on EPA Administrator's Finding that, pursuant to Clean Air Act section 202(a), six EPA Findings
greenhouse gases endanger the public health and welfare. GHG
STAFF REPORTS/COMMUNICATIONS Staff Rpts
Utilities Director Morrow presented the Monrovia Nursery Water Rights Update stating that Monrovia Nursery Dir of Util
has decided not to sell its water rights to one or more outside entities and to instead "sell" such rights to its Monrovia Nurs
stockholders. Water Rights
Assistant Director- Customer Care & Solutions Vanca presented the Customer Service Annual Statistics Asst Dir Cust
Update which included Total Field Visits(ons,offs,check reads,customer requests),bills mailed,online bills, Care Solutions
reminder notices mailed,final notices mailed,customer calls,lobby customers assisted,payments received and
Automated Hone System calls.
Utilities Director Morrow presented an update on the Lodi Energy Center Update stating that the project is still Dir of Util
awaiting issuance of a license to construct the Lodi Energy Center from the California Energy Commission Lodi Energy
(CEC). Center Update
Assistant Director of Water Operations Anderson presented the water supply status update which is C. Anderson
summarized as follows: Spreading Grounds are currently gaining water at a rate of 3 feet per week;current Update on
overall year to date is 14.41" vs. average of 9.97"— 145% of average; statewide snowpack water content is Water Supply
115% of average; San Gabriel River inflow has increase as has local snow pack,but the drought is not over.
Environmental Protection Agency(EPA)Declaration that Carbon Dioxide is Toxic and a Hazardous Waste, Dec Carbon
was not presented. Dioxide not
presented
Director of Utilities Morrow announced and invited Board Members to the American Public Power APPA
Association(APPA)Annual Conference June 19-23, 2010 Orlando, FL Conference
Moved by Board Member Carrillo,seconded by Board Member Rocha and unanimously*carried to adjourn. Adjourn
TIME OF ADJOURNMENT: 7:06P.M.
SECRETARY
NEXT RESOLUTION NO. 10-C8.
*Indicates Macias and Hanks absent.
01/25/10 PAGE THREE
006
AZUSA
OW a
&IIT A Warry
CONSENT CALENDAR
TO: HONORABLE CHAIRPERSON AND MEMBERS OF THE • ZUSA UTILITY
BOARD
FROM: GEORGE F. MORROW, DIRECTOR OF UTILITI .
DATE: FEBRUARY 22, 2010
SUBJECT: AWARD CONTRACT FOR SUPPLY AND INSTALLATION OF
UNDERGROUND ELECTRIC SUBSTRUCTURES AT LARK ELLEN &
GLADSTONE, PROJECT#LD2010-2
RECOMMENDATION
It is recommended that the Utility Board award the contract to Perry C. Thomas Construction,
Incorporated in the amount not-to-exceed $95,016.90 to furnish and install underground
substructures at Lark Ellen and Gladstone as per plan and specifications for Project# LD2010-2.
BACKGROUND
On January 25, 2010, the Utility Board approved plan and specifications for project LD2010-2
(consent item D-4). This project entails the relocation of a section of overhead power line to
underground in order to improve the overall reliability of one of the circuits from the Kirkwall
substation.
On January 28, project LD2010-2 was advertised in San Gabriel Valley Tribune to solicit formal
bids. On February 16, 2010, at 10:00 a.m., submitted bids were opened and announced in the
City Clerk's office. Below is the table of comparable bid prices from all bidders:
Bidder Project Cost Amount
VCI Telecom, Inc. $116,571.40
Perry C. Thomas Construction, Inc. $95,016.90
BnB Engineering, Inc. $149,880.94
007
Award Contract for Underground Substructures
February 22, 2010
Page 2
Staff reviewed the lowest bid of Perry C. Thomas Construction, Inc. and found it responsive to
the plan & specification requirements for this project.
FISCAL IMPACT
This capital improvement project was originally budgeted in Capital Improvement Program
(CIP) account#73010B. There are sufficient funds available in this CIP account.
Prepared by:
Hien K. Vuong—Electrical Engineer
008
e c
AZUS.A
LIGHT 8. 'WATER
CONSENT CALENDAR
TO: HONORABLE CHAIRPERSON AND MEMBERS OF THE AZUSA UTILITY
BOARD
FROM: GEORGE F. MORROW, DIRECTOR OF UTILITIES
DATE: FEBRUARY 22, 2010
SUBJECT: AMENDMENT OF CONTRACT WITH HALL & FOREMAN, INC. FOR
EXTRA COST RELATED TO ADDITIONAL WORK FOR PIPELINE
REPLACEMENT PROJECT W-265 DESIGN ENGINEERING SERVICES
RECOMMENDATION
It is recommended that the Utility Board approve amendment of contract with Hall & Foreman
(H&F) to pay them additional amount of $23,625 for Design Engineering Services for Pipeline
Replacement Project W-265.
BACKGROUND
At its regular meeting of March 23, 2009, the Utility Board approved award of a contract for
consultant design services for Project W-265, Pipeline Replacement ($99,800). At its September
28, 2009 meeting the Utility Board approved an addition of$24,950 to the H&F design contract
arising from a change in scope of the pipeline design due to a necessary changed pipeline
alignment.
As a part of the new alignment, it will be necessary for Azusa Light & Water (ALW) to secure
new easements for the pipeline from the Los Angeles County Department of Public Works
(LADPW). Furthermore, the existing easements held by ALW will need to be vacated, and the
services of an appraiser will be necessary to determine the value of the new waterline easements
across LADPW rights-of-way at San Dimas Wash and Big Dalton Wash in the City of Covina.
Hall & Foreman has estimated that a total of$23,625 in additional services will be necessary to
complete the preparation of the easement documents and legal descriptions, preparation of
vacation documents, and appraisal of the proposed easement locations. The additional services
are itemized in the documents attached to this Staff report. Staff has reviewed the proposed
change order amounts and finds them to be reasonable.
009
Project W-265 Design Engineering Service, Hall & Foreman
February 22, 2010
Page 2
FISCAL IMPACT
The fiscal impact of this additional cost is $23,625 (which combined with the September 28,
2009 change order amount of $24,950 represents a 49% increase in the original design services
contract amount). This request is the second addition to the scope and cost of Hall & Foreman's
contract. This additional cost will be paid from Account 32-80-000-721-7130/72107B-7130 in
FY 2009-2010 capital improvement program budget.
Prepared by:
Chet Anderson, Assistant Director- Water Operations
010
61111r, Hall & Foreman, Inc.
*givh5.
Engineering.Surveying•Planning•Landscape Architecture , 2010
. �
2010
iSt 11 ., 1I.090335.0000
February 4, 2010
Mr. Chet Anderson
Assistant Director, Water Operations
Azusa Light& Water
Second Floor Desk
729 N. Azusa Avenue
Azusa, CA 91702
Subject: Additional Services for Project W-265
LA County Property Management Permits
Dear Mr. Anderson,
HFI is submitting an additional services request for changes to the design contract for
project W-265. The change in services will include the preparation of legal descriptions
and processing the plans through Los Angeles County Property Management Division for
the issuance of water line easements across the San Dimas Wash and Big Dalton Wash
in the City of Covina.
If you have any questions, please contact me at(714) 665-4518.
Sincerely,
Hall & Foreman, Inc
David Stuetzel
Stuetzel
Project Manager
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EXHIBIT A
SCOPE OF SERVICES
Amendment 2
Water Main Improvement Project W-205
The services to be completed under this additional scope of services will include
preparation of easement legal descriptions and exhibits for installation and operation of
new water lines across Los Angeles Flood Control Property at locations known as San
Dimas Wash and Bid Dalton Wash.
A. Permit and Processing Coordination
Submit and process through County of Los Angeles Property Management
Division for the issuance of two water line easements crossing the San Dimas
Wash and Big Dalton Wash in the City of Covina. Payment of all permit fees will
be paid for by City.
Fee: $3,300
B. Prepare Legal Descriptions
Complete research at County of Los Angeles and prepare legal description and
plat showing water line easement within County property. Two easements are
required, one for San Dimas Wash and one for Big Dalton Wash.
Fee: $6,000
C. Prepare Vacation Documents
Prepare legal description and plat for existing Azusa Water Line easements within
County of Los Angeles Flood Control property adjacent to Dig Dalton Wash and
San Dimas Wash.
Fee: $8,000
D. Appraisal Services (Optional)
Retain the services of Kiley Company to complete appraisal of Los Angeles
County Flood Control Property for issuance of water line casements. Services
will include reviewing existing property records, preparing summary of cost and
providing final report and coordination with Los Angeles County Property
Management Division to determine fair market cost of proposed easement
location. Two properties will be evaluated.
Fee: $6,325
Total Fees Requested for Additional Work under Change Order No. 2: $23,625
Note: City to provide recording document
0 ,.
AZUSA
LIGHT 8, WATER
CONSENT CALENDAR
TO: HONORABLE CHAIRPERSON AND MEMBERS OF THE AZUSA UTILITY
BOARD
FROM: GEORGE F. MORROW, DIRECTOR OF UTILITIE
DATE: FEBRUARY 22, 2010
SUBJECT: AMENDMENT OF CONTRACT WITH J. FLETCHER CREAMER & SON,
INC. FOR ADDITIONAL WORK FOR PROJECT W-263, WATER MAIN
CEMENT MORTAR LINING PROJECT
RECOMMENDATION
It is recommended that the Utility Board amend contract with J. Fletcher Creamer & Son to pay
them an additional amount of $290,000 for additional access holes that are necessary for the
completion of Project W-263, Water Main Cement Mortar Lining Project.
BACKGROUND
At its regular meeting held on June 22, 2009, the Utility Board approved the award of contract
for pipeline cement mortar lining services to J. Fletcher Creamer & Son, Inc. of Sylmar
California for a bid amount of $1,198,103.50. Bids were for the cement mortar lining of
approximately 30,000 linear feet of pipeline in the Azusa Light & Water water system. Two bids
were received, J. Fletcher Creamer's and the other bid was from Spiniello Companies, in the
amount of$1,771, 462.00. The difference between the bids was $573,358.50.
At the time the cement mortar lining project was bid, it was estimated by staff that 65 entry holes
(holes dug to the pipe) would be necessary to access the pipeline at various points in the pipeline.
However, once the project was begun, it became necessary for J. Fletcher Creamer to dig
additional holes; the number of additional holes has been estimated by the contractor to be 29 at
$10,000 each ($290,000.00). The addition of $290,000 to J. Fletcher Creamer's bid total of
$1,198,103.50 increases the total contract to $1,488,103.50, $283,358.50 less than Spiniello's
base bid.
Staff has reviewed the contractor's request to add 29 holes and has determined that the additional
holes are necessary and reasonable. The contractor's change order request is attached.
012
Fletcher Creamer & Sons, Inc.
February 22, 2010
Page 2
FISCAL IMPACT
The fiscal impact of this additional cost is $290,000 which represents an addition of 24% to the
total cost of J. Fletcher Creamer & Son, Inc.'s pipeline cement mortar lining contract. This
additional cost will be paid from Capital Budget Account 32-80-000-721-7145/72109A-7145.
Prepared by:
Chet Anderson, P.E. Assistant Director- Water Operations
013
to)is.
AZUSA
•1'0.1to
CONSENT CALENDAR
TO: HONORABLE CHAIRPERSON AND MEMBERS OF THE AZUSA UTILITY
BOARD
FROM: GEORGE F. MORROW, DIRECTOR OF UTILITIE
DATE: FEBERUARY 22, 2010
SUBJECT: MODIFICATION OF DISTRIBUTED SOLAR PROGRAM FUNDING IN
COMPLIANCE WITH STATE SENATE BILL 1 (SB1)
RECOMMENDATION
That the Utility Board approve modifications to the Solar Partnership Program as outlined in this
report.
BACKGROUND
In 2006, the California Legislature enacted the distributed solar power legislation(SB 1) to
further the State's commitment to achieving 3,000 MW of distributed solar power by 2017.
SB 1 mandated all electric utilities in California to make available up to $3 billion dollars in
rebates over a 10-year period to fund distributed solar power installations in California. It is
envisioned with this funding it would spur technology innovations in the solar power industry
and ultimately would enable solar power to be cost competitive with conventional sources of
electricity. SB 1 specifies that municipal utilities in aggregate shall be responsible for$750
million in funding and shall be allocated among the municipal utilities proportionally to retail
electricity sales.
Azusa's share of the SB 1 funding requirement is about $3 million over 10 years.
The City currently has a solar partnership program which was established in June 2006 and
modified in 2007 with the following elements:
• Provides a premium rebate at $4 per Watt. Under this option, a customer would agree via
a contract to transfer the environmental and renewable energy attributes of solar
installation to the City. The basic rebate amount is $2.80 per Watt and there is an
additional rebate premium amount of$1.20 per Watt being paid for the Renewable
Energy Credits (REC's).
014
Modification of Solar Program
February 22, 2010
Page 2
• An annual budget of$300,000 that meets the SB 1 funding requirement.
• Funding is allocated equitably among the different customer classes depending on
customer demand, initially equal allocation among residential, commercial, and industrial
customer classes. Any unspent funding in one class is either made available to other
classes or carried over to be used in the following years.
In general, our current program is consistent with SB 1 mandate except for funding. Our current
program funding levels were intended to "jump start" the Solar Partnership Program and has
accomplished that goal. Last year Azusa went from a single 2.4 KW residential solar system to
almost 90 KW of customer installed PV generation. SB 1 suggests that the Utilities reduce their
program funding, on average, 7% per year until the funding reaches zero toward the end of the
10 year period. Many of the surrounding Utility companies have made this modification and
their funding levels have been reduced substantially since inception.
In light of the SB 1 mandate, staff is proposing the following changes to our existing program to
be consistent with SB 1's intent and bring funding levels more in line with the other local
utilities:
• Reduce the current basic $2.80 per Watt rebate level to $2.42 per Watt.
• Reduce the current premium of$1.20 per Watt for the REC's to $0.58 per Watt.
• Continue to explore innovative and cost effective solar installations that further the state
solar goal.
• Staff will make conforming changes to the current solar program guidelines, forms, and
agreements.
FISCAL IMPACT
Funds have been budgeted in the amount of$300,000 for FY 09-10 in Power Resource account
number 33-40-775-570-6625 in anticipation of SB 1 funding requirement. There is no impact to
retail rates at this time due to this program.
Prepared by:
Paul Reid, Business Development/Public Benefit Programs Coordinator
015
� � ..
AZ LISA
. env & w'arLI
CONSENT CALENDAR
TO: HONORABLE CHAIRPERSON AND MEMBERS OF THE AZUSA UTILITY
BOARD
FROM: GEORGE F. MORROW, DIRECTOR OF UTILITIES
/At
DATE: FEBRUARY 22, 2010
SUBJECT: SOUTHERN CALIFORNIA PUBLIC POWER AUTHORITY (SCPPA) ICE
ENERGY DEMAND RESPONSE PROGRAM
RECOMMENDATION
That the Utility Board approve participation in the SCPPA Ice Energy demand response
program.
BACKGROUND
The Ice Energy Demand Response Program produces ice during night time off-peak hours to
later use that ice to cool a facility during on-peak hours, thus reducing the need for peak electric
cooling. Azusa's Public Benefit Program already funded an Ice Bear unit at the library in 2005 as
part of a Research and Development Program through SCPPA.
Now Azusa Light and Water has partnered with other Southern California Public Power
Authority (SCPPA) members to install enough Ice Bear units to shift 53 MW to off peak.
Azusa's share is up to 1-MW of the project total. Ice Energy estimates that the total number of
units to achieve this goal is 140 units. The new Ice Bear units are the third generation of the same
unit located at the Library that was featured on the Discovery Channel's show, Modern Marvels.
The newest generation Ice Bear still makes ice at night, during off-peak hours, and uses that ice
to cool during the daytime on-peak hours, but it also has the ability to dispatch power and be
operated at variable times during those fluctuating peak hours.
Funded by the Public Benefit funds, Azusa plans to install nine units on the Police Department
building as part of the scheduled HVAC upgrade as a pilot program. This will provide a
showcase for the new generation of the Ice Bear technology. By installing the Ice Bear units on
City facilities, Azusa retains full control to evaluate the success of the program. Once proven and
after a thorough economic evaluation has been conducted, the installations can easily be ramped
up to include other qualifying City locations and a limited number of interested customer sites
within the service territory. Periodic updates will be provided on the program progress.
016
SCPPA Ice Energy Program
February 22, 2010
Page 2
Ice Energy will operate and maintain the units for SCPPA under a long-term agreement that will
extend for 10 years, with provision for two five-year renewals. The project is designed as a "pay
as you go" program where SCPPA members are not committed to a specific number of units and
only pay for those units installed at a SCPPA member's cost of approximately$17,000 each.
me
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See attached Anaheim Public Utilities research project for additional documentation of the Ice
Bear small scale thermal energy storage system.
FISCAL IMPACT
Funds will be budgeted over the duration of the project as needed in Public Benefit account
number 24-40-739-082-6625/MMuniB-6625.
Prepared by: Paul Reid, Business Development/Public Benefit Programs Coordinator
Attachment: Anaheim Ice Bear Final Report(PDF)
017
American Public Power Association
Demonstration of Energy-Efficient Developments (DEED)
Application of a Small-Scale
Thermal Energy Storage System
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Final Report
Prepared by:
City of Anaheim
Public Utilities Department
201 S. Anaheim Blvd., Suite 801
Anaheim, CA 92805
018
July 2005
019
ABSTRACT
The City of Anaheim Public Utilities Department conducted a research and
demonstration test of a small-scale Thermal Energy Storage (TES) system at a
City fire station in 2004-05. TES systems have previously targeted installations in
larger commercial buildings that have a significant cooling load. Small-scale TES
represents a breakthrough in technology, manufacturing and packaging that
targets the smaller 5 to 10-ton air conditioning systems that are prevalent in small
commercial facilities in Anaheim.
The demonstration was successfully deployed and ran for nine months. Data was
collected to evaluate the impacts to the facility and to the utility. Anaheim has
recommended that other member agencies in the Southern California Public
Power Authority (SCPPA) conduct trials to gather more field experience in
different applications, and to jointly develop customer offerings such as time-of-
use (TOU) rates and incentives to help offset initial costs of the system.
020
TABLE OF CONTENTS
ABSTRACT I
TABLE OF CONTENTS II
LIST OF FIGURES IV
LIST OF TABLES V
1.0 INTRODUCTION 1
1.1 Background 1
1.2 Project Objectives 1
1.3 TES Theory of Operation 2
1.4 Utility Perspective 3
2.0 PROJECT METHODOLOGY 4
2.1 TES System Description 4
2.2 Site Description 8
2.2.1 Site Characteristics 8
2.2.2 Facility Energy Profile 10
2.2.3 Site Requirements 12
2.2.4 System Design 13
2.3 Project Implementation 15
2.3.1 Approval Process 15
2.3.2 Construction 17
3.0 RESULTS 23
3.1 Unit Data Analysis 23
ii 021
3.2 Facility Data Analysis 25
3.3 Comfort and Availability 27
4.0 FUTURE PLANS AND APPLICABILITY 27
5.0 SCHEDULE 29
6.0 BUDGET 30
7.0 CONCLUSIONS 31
APPENDIX A. ICE BEAR PRODUCT BRIEF 1
022
LIST OF FIGURES
Figure 1. Demand Profile of a Facility Before (top) and After (bottom)
Implementation of TES 2
Figure 2. Ice Bear 5OTM TES System (courtesy of Ice Energy, LLC) 4
Figure 3. Ice Bear Unit (right) and Standard Condensing Unit (left) 5
Figure 4. Anaheim Fire Station 8
Figure 5. Fire Station Site Layout 9
Figure 6. Mechanical Equipment Well with Existing Air Conditioning Units 10
Figure 7. Fire Station Daily Usage and Load Factor (by billing period) 11
Figure 8. Facility Energy Profile for Peak Day (Sept. 5, 2004) 11
Figure 9. Fire Station Walkway Area (front view from street) 12
Figure 10. Fire Station Walkway Area (rear view) 13
Figure 11. TES System Block Diagram 14
Figure 12. TES Installation Diagram 15
Figure 13. Anaheim Approval Process Flow Chart 16
Figure 14. Site Clearing 18
Figure 15. Placement of TES and Condensing Unit onto Concrete Pad 18
Figure 16. Installation of New Evaporator Coil 19
Figure 17. Refrigerant Lines on Facility Rooftop 19
Figure 18. Refrigerant Lines Along Wall, and Condenser Electric Disconnect20
Figure 19. Aluminum Tape Wrapped Around Refrigerant Line Insulation 21
Figure 20. Ice Forming on Coils Inside Ice Bear Unit 21
Figure 21. Two-Stage Thermostat 22
Figure 22. Completed Installation 22
Figure 23. Demand Profile Prior to Ice Bear Installation (Roof Top Unit) 23
Figure 24. Demand Profile After Ice Bear Installation 24
Figure 25. Combined Demand Profile (Ice Bear and Existing Air Conditioner) 25
Figure 26. Energy Shifted versus Ambient Temperature Error! Bookmark not
defined.
Figure 27. Facility Billing Meter— Before and After TES Installation 26
iv 023
LIST OF TABLES
Table 1. Ice Bear 50T"' Product Data 5
Table 2. Daily Energy Totals 25
Table 3. Facility Billing Summary Comparison 26
Table 4. Project Schedule 29
V
024
1.0 INTRODUCTION
1.1 Background
The City of Anaheim is located in Orange County, in Southern California.
Anaheim Public Utilities (Anaheim) is responsible for providing electric and water
services for the local community. Anaheim began to serve its municipal
customers in 1895, serving a customer base of 145 incandescent bulbs and 22
arc lamps. Anaheim has grown to a population of over 335,000 and a service
territory of 48.2 square miles. Anaheim presently serves over 109,000 electric
meters (85% residential, 14% commercial and industrial, 1% other) and over
61,000 water meters (87% residential, 10% commercial and industrial, 3% other).
Anaheim sells in excess of three million megawatt-hours (MWh) per year with a
historic system peak demand of 578 megawatts (MW). Anaheim's resource
portfolio has ownership in generating resources throughout the Western United
States that include coal, natural gas, nuclear, hydro and wind power. Anaheim
owns and operates its own 48 MW combustion turbine plant within the City
boundaries for peaking capacity. Anaheim has adopted a Renewable Portfolio
Standard, and will subsequently take power from geothermal and landfill gas in
addition to wind resources. Local solar generating resources are also promoted,
including photovoltaic systems on top of roofs of residential and commercial
customer facilities, as well as at municipal facilities.
1.2 Project Objectives
When evaluating small-scale thermal energy storage (TES) as a potential
customer application, Anaheim considered the following project objectives:
1. To reduce the utility's overall system peak demand —Anaheim prides
itself in offering high quality services to its customers at low costs. In order
to continue to serve the customer base without increasing rates, Anaheim
must plan a power resource strategy that mitigates higher cost power.
TES represents one way to encourage small commercial customers to
contribute towards peak demand reduction that ultimately helps the utility
gain efficiencies in power purchases by pushing peak demand into off-
peak hours.
2. To develop TES as a product offering for small commercial customer
class — In recent years, Anaheim has made a concerted effort to tailor
programs and offerings for small commercial customers that includes an
energy efficiency program that offers turnkey energy audit and efficiency
measures installation. TES installed on refrigerant-based, package
heating, ventilation, and air conditioning (HVAC) systems along with a
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Application of a Small-Scale Thermal Energy Storage System Anaheim Public Utilities
time-dependent rate option is a potential program offering that helps the
utility, and helps customers lower their energy bills.
3. To gain first-hand experience with the design, permitting,
installation, and operation of a small-scale TES system. In preparation
for future installations of such system, this demonstration project serves to
familiarize City staff with the requirements for small-scale TES. The TES
system and the existing HVAC system were instrumented to collect data
and compare performance metrics. Also, the system is installed at a City
facility, and an assessment from a user's perspective will help in
evaluating comfort.
1.3 TES Theory of Operation
In general, TES is not a new technology or concept. The operating principle for
air conditioning application is to store a cooling medium during off-peak hours, for
utilization in space conditioning during on-peak hours. The cooling medium may
be chilled water, ice, or eutectic salts. This is a regenerative cycle, and several
different technologies have been developed. Traditionally, TES has been applied
to larger HVAC system due, in part, to the capital-intensive nature of an
installation. Target applications have been those that had a substantial enough
air conditioning load and corresponding electric bills to offer a reasonable
payback.
By operating the system to create and store the cooling medium during off-peak
hours, the majority of the energy consumption is removed from the facility's peak
demand. For the facility to take advantage of this technology, a time-dependent
electric rate is required to provide economic benefit to the customer. Such a rate
would incentive lowering on-peak demand to off-peak hours. Figure 1 shows the
general impact to a small commercial facility's load profile.
411 6 kW Peak
Baseline
E • Ice 4.5 kW Peak
a� yt
Midnight Noon Midnight
Figure 1 . Demand Profile of a Facility Before (top) and After (bottom)
Implementation of TES
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Application of a Small-Scale Thermal Energy Storage System Anaheim Public Utilities
The customer receives several benefits for"pushing"demand to off-peak hours:
1. The customer's comfort level is not compromised,since the same amount
of cooling is delivered when needed during the warmest periods of the
day.
2. The HVAC system operates during off-peak hours,when temperatures are
generally lower and the system operates more efficiently
3. The HVAC system does not have to be sized for the super-peak periods
when demand is at its highest due to operation of TES,and may therefore
allow for downsizing of the HVAC system.
4. The customer may take advantage of lower off-peak rates.
1.4 Utility Perspective
Many utilities offer time-of-use(TOU)rates that encourage customers to shift
peak demand.Typically,TOU rates are structured with an on-peak rate that is
substantially higher than the standard rate,and an off-peak rate that is lower than
the standard rate,which works to provide financial incentives to customers who
are able to transfer load to off-peak hours.
For utilities that have substantial air conditioning loads that contribute to system
peak demand,TOU rates helps to flatten the system load profile.This can be
utilized to shape forecasts for power purchases that reduce the higher cost of on-
peak resources,and helps increase off-peak demand.Thus,TES effectively
assists utilities in managing their power resource without significantly impacting
overall revenue.This is an important consideration when customers consider
cogeneration or other energy efficiency alternatives.In instances where addition
of transmission or distribution capacity may be difficult,TES offers a possible
solution that helps to delay required upgrades or additions.
The effective result also has an environmental benefit,as dependency on
peaking plants,which may have higher air emissions,is reduced.In a study
sponsored by the California Energy Commission,which evaluated TES impacts
towards air emissions,the study concluded that TES could result in saving"1.6
tons of NOx per day in the[South Coast Air Quality Management District]
SCAQMD.These NOx savings are equivalent to the savings from substituting
almost 100,000 electric vehicles for gasoline vehicles."'
1 Source Energy and Environmental Impacts of Thermal Energy Storage,California Energy
Commission,Report P500-95-005,February 1996.
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Application of a Small-Scale Thermal Energy Storage System Anaheim Public Utilities
2.0 PROJECT METHODOLOGY
2. 1 TES System Description
The project methodology was to gain first-hand experience with small-scale TES
by designing and installing a system in a retrofit application. The TES system
selected for use in Anaheim's demonstration is the Ice Bear 5QTM unit
manufactured by Ice Energy, LLC. The Ice Bear is a refrigerant-based, internal
melt, ice-on-coil, TES device that provides approximately 45 ton-hours of cooling
capacity. It is capable of reducing as much as 10 kW (typical) of peak demand
and shifting approximately 50 kilowatt-hours (kWh) to off peak hours.
By making ice during the evening, the unit uses only 300 watts for recirculating
pumps, along with the existing circulation fans to deliver cooling to the facility.
This regenerative cycle repeats daily, and no additional water needs to be added
in the fully contained package of approximately 6' x 5' x 5' (see Figures 2 and 3).
I;-
Figure
•
•
0000
2. Ice Bear 50TH TES System (courtesy of Ice Energy, LLC)
A condensing unit is included as part of the package to provide the cooling
necessary to freeze the water stored inside the Ice Bear. It is a standard, off-the-
shelf unit. In certain applications, the existing HVAC may be able to supply the
required cooling for the TES system. In Anaheim's application, a separate
condenser was required for comparative data collection, and also because
cooling was required throughout the day and evening.
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Application of a Small-Scale Thermal Energy Storage System Anaheim Public Utilities
t 4 SAT
ION!
.6
Figure 3. Ice Bear Unit (right) and Standard Condensing Unit (left)
Ice Energy's Ice Bear SOTM product complements the refrigerant-based market.
The Ice Bear is an internal melt, ice-on-coil, thermal energy storage system that
specifically targets package air conditioning that is ubiquitous throughout
commercial and residential facilities in the United States. The components are
low-cost, off-the-shelf commodities in a form factor that is easy to install, operate
and maintain.2
The product brief is included as Appendix A. The following table summarizes the
unit's specifications.
Table 1. Ice Bear 5OTM Product Data
Cooling Performance
Nominal Tonnage 7.5 tons
Total Cooling Capacity 45 ton Hrs 540 kBtu /day
Latent Heat Capacity 42 ton Hrs 504 kBtu /day
Maximum Cooling Load 10 tons 120 kBtu / hr
Peak Power 0.3 kW
Energy Performance
Energy to build ice(1) 48 kWh /day
2 Ice Energy website, www.ice-energy.cam.
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Application of a Small-Scale Thermal Energy Storage System Anaheim Public Utilities
Energy to discharge ice 4 kWh /day
EER (Btuh / Watts ) 10.4
Physical Properties
Refrigerant Charge (HCFC-22) 31 lbs.
Dimensions (W x L x H)
Energy Storage Module 73x73x63 inches 185x185x160 cm
Total Assembly 129x80x63 inches 320x203x160 cm
Shipping Weight
Energy Storage Module 800 lbs 363 kg
Condensing Unit & Piping 300 lbs 136 kg
Frame 4201bs 191 kg
Total 1520 lbs 689 kg
Weight Filled
Energy Storage Module 6125 lbs 2778 kg
Condensing Unit & Piping 300 lbs 136 kg
Frame 420Ibs 191 kg
Total 6845 lbs 3105 kg
Water Volume 85.3 cu ft 638 gal.
Electrical Requirements 20 amp single phase circuit
Condensing Unit
Nominal Tonnage 5 tons
Approved Models
• Trane 2TTB0060A
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Application of a Small-Scale Thermal Energy Storage System Anaheim Public Utilities
• American Standard 2A7B0060A
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Application of a Small-Scale Thermal Energy Storage System Anaheim Public Utilities
Evaporator Coil Recommendations
Tonnage As required at 50° F evaporator
temperature
Tube Diameter (in) 3/8 in. (or smaller)
2.2 Site Description
An initial set of site surveys were conducted at several locations in the City of
Anaheim and the most suitable location was found to be an Anaheim Fire
Station. Site surveys evaluated compatibility of the existing package air
conditioning system, energy and thermal profile, available space, proximity to
electric service and existing ducts, accessibility, and security/vandalism risk.
Figure 4 shows the fire station facility selected for the demonstration.
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Figure 4. Anaheim Fire Station
2.2.1 Site Characteristics
The fire station facility features two large bays for parking of fire engines. The
space conditioned areas include a dormitory, dispatch center, offices,
kitchen/dining area, and lounge. See Figure 5 for the layout of the site.
8
032
Application of a Small-Scale Thermal Energy Storage System Anaheim Public Utilities
FLOW
Lounge/Kitchen
Areas Area 2:Dormitory,
Offices,Dispatch
Center
T1
Mechanical
Equipment Well
U T2
Q Q
Outdoor
Patio
I I
Existing 5-Ton
Package Units
Refrigerant Lines
(rooftop)
Truck Bays
FLOW
FLOW
Truck Apron
Parking
Driveway
}_
Electrical
Room Generator Storage
Planted t C j
Area —
Bushes
Ice Bear Unit Condensing Unit Gate
Figure 5. Fire Station Site Layout
The space conditioning is served by two 5-ton package unit. One unit serves the
kitchen and lounge areas, and the second unit serves the dormitory, offices and
dispatch areas. The latter air conditioning system was the test case for the TES
installation. The two systems are independent of each other, as they are
controlled by separate thermostats. The air conditioning units (see Figure 6) are
located on the rooftop, in a mechanical equipment well. The ducting is directly
below the units.
9
033
Application of a Small-Scale Thermal Energy Storage System Anaheim Public Utilities
','90,t,c4--7,1qiek-t-ffil,4:4.#---': -..,'
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Figure 6. Mechanical Equipment Well with Existing Air Conditioning Units
2.2.2 Facility Energy Profile
The Fire Station is occupied 24 hours a day, 7 days a week, unless the crew is
dispatched. In the past 12 months, the facility used 93,327 kilowatt-hours (kWh),
or an average of 259 kWh per day (based on 362 billing days). The peak demand
for the facility during this period was 25.9 kilowatts (kW). The facility's load factor
is a good indicator of the level of usage spread over the number of available
hours at peak demand. The average load factor was 52.5%, with a maximum
load factor in a given billing period of 64.9%. The facility's usage profile in terms
of daily energy usage and load factor is shown in Figure 7.
10
034
Application of a Small-Scale Thermal Energy Storage System Anaheim Public Utilities
Fire Station Energy Profile
350 _ 70%
�a 300 — ♦ — 60%
♦ —' ♦ ♦
250 ♦ • • ♦ • ♦ ♦ ♦ 50%
200 __ 40% it
?i" 150 — 30%
100 � ' - 20% .°�
50 — — 10%
0 I I I I 0%
v v 4 4 4 4
9 90 0 0
S 4 3 a 4 o 8 co 8 ° co
Q w O Z p 2
Daily Energy --O—Load Factor
Figure 7. Fire Station Daily Usage and Load Factor(by billing period)
The facility uses more energy during the summer months due to high air
conditioning usage, and less during the winter months. Other loads in the facility
include lighting, an air compressor, computers and communications equipment,
kitchen appliances, and various plug loads. The peak demand of 25.9 kW
occurred on September 5, 2004. As Figure 8 shows, the peak was reached
during the late afternoon.
Fire Station Peak Day Profile
(Sept. 5,2004)
30
25
20 + + y,
Ts 15 + '
C 10 y. '
5
0
o 0 0 0 0 0 0 0 0 0 0 0
0 0 o O o O o O o 0 o O
O CV d' c0 00 O (:D N N
Figure 8. Facility Energy Profile for Peak Day(Sept. 5, 2004)
11
035
Application of a Small-Scale Thermal Energy Storage System Anaheim Public Utilities
2.2.3 Site Requirements
The site required some preparation to install a housekeeping concrete pad
extension, clearing of some bushes, and repositioning of a small iron gate. The
Ice Bear was located on a walkway along the side of the facility. The unit was
located to allow appropriate walkway and equipment clearances as required by
the building code. The gate allows personnel access from the street. Should
equipment replacement be required, the walkway leads to the open truck apron
area in the back of the facility. Figures 9 and 10 show the walkway area prior to
construction.
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Figure 9. Fire Station Walkway Area (front view from street)
12
030
Application of a Small-Scale Thermal Energy Storage System Anaheim Public Utilities
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Figure 10. Fire Station Walkway Area (rear view)
Because the facility is utilized throughout the day and cooling is required at night,
the existing rooftop air conditioning was to stay in place and operational during
nighttime hours. Sequencing of the cooling schedule was to use the Ice Bear
during the day (between 11AM and 8PM), and then to switch over to the existing
air conditioner at night, when the Ice Bear was recharging and making ice.
Another reason for the location of the Ice Bear was due to a request by the City's
Public Works' Facilities Maintenance group who maintains all buildings. For
purposes of easy access and to minimize potential for roof leaks, the unit was
installed on the ground.
During evaluation, both the Ice Bear and the existing air conditioning unit were
equipped with datalogging equipment to monitor performance. The facility has a
load profile meter in place of a conventional utility meter to allow energy usage to
be captured in 15-minute intervals. The meter uses a paging module to report
data back to the utility on a nightly basis, allowing next day's data to be viewed
and analyzed. The data gathered by the monitoring equipment was used to
evaluate the Ice Bear operation and energy performance.
2.2.4 System Design
The Ice Bear system design inserts a new evaporator coil inside the existing
ductwork. As Figure 11 shows in block diagram form, the Ice Bear utilizes a
separate condensing unit to form ice. Refrigerant lines loop to the new
evaporator coil. This allowed the existing ducts and fan to operate as normal,
with no alterations made to the existing system, except where the new
13
037
Application of a Small-Scale Thermal Energy Storage System Anaheim Public Utilities
evaporator coil was installed. The green colored blocks represent the additional
equipment installed for this project.
This design allowed the existing unit to continue to operate during the evening
hours when the Ice Bear was making ice. Also, since the Ice Bear was a beta
system, it allowed for maximum flexibility in the event that extended maintenance
was potentially required. To prevent possible air conditioning interruptions to the
facility, the design allowed for switching back to the existing system without
inconveniencing the occupants. To ensure proper control of both units the
thermostat was scheduled for two time periods: on-peak, in which the Ice Bear
would operate, and off-peak, in which the existing system would operate. Figure
12 shows the configuration of the installation.
Existing HVAC System
\ \
Existing Packaged Air Distribution
Air Conditioning
Unit • (Ducts)
\ \ \ \
HVAC System Including TES
•
Existing Packaged Evaporator Coil \ Air Distribution
Air Conditioning (New) ` (Ducts)
Unit
\ \ \
\ \
Ice Bear Thermal ,/\•
Energy Storage Condenser Unit
\ \ \ \
Figure 11. TES System Block Diagram
14
03
Application of a Small-Scale Thermal Energy Storage System Anaheim Public Utilities
illir
_ X10
��``` a Evac orator li
Refrigerant ■��rniami coil
Lines
"mai 61•11111114711
111111111i Oki c....-7------111MIIN 111111411111111
"ftla...--"Zil.41111111.11111.4111111
"r-- " -4 .°‘174111111110111.111111111/11111111
— 11111111111p2MIN111411
iMINN Alga
5 S'
Figure 12. TES Installation Diagram
2.3 Project Implementation
2.3.1 Approval Process
Due to the Ice Bear unit being a new technology, other departments involved with
the approval process had to be educated on the system, its effects on the
building and existing equipment, whether or not there were any hazardous
materials used, and aesthetics. In order to familiarize Anaheim's Building and
Planning Divisions with the technology, Ice Energy's architect helped to explain
the system and provide appropriate documentation. Figure 13 shows a flowchart
of the approval process for this project.
15
039
Application of a Small-Scale Thermal Energy Storage System Anaheim Public Utilities
( START )
City Council approval of
agreement with Ice Energy
•
Submit plans to Planning
Division
Submit plans and
specification for Building
Division approval
Provide additional equipment
information
Plans 1
Accepted?
Prepare Site and Install
TES System
V
Commission TES System
and Receive Inspection
Approval
•
(COLLECT DATA)
Figure 13. Anaheim Approval Process Flow Chart
For the Building Division, a set of plans included the site layout, product brief,
specifications, and photos from the site. In the discussion, the matter of whether
or not the Ice Bear impinges on the existing air conditioning system was brought
16
040
Application of a Small-Scale Thermal Energy Storage System Anaheim Public Utilities
up.The response was that the Ice Bear system does not cut into any existing
refrigerant lines or alter the existing air conditioning system except to add an
evaporator coil.The evaporator coil causes a marginal drop in static pressure,as
has been thoroughly tested in laboratory and other field trials.However,since
most of the pressure drop on an evaporator coil occurs from a wet coil condition
and the Ice Bear is the only wet coil,the effects are minimal.As an analogy, Ice
Energy equated the pressure drop as similar to before and after conditions of
filter cleaning.In addition,the air flow is a parameter that is tested as part of the
installation procedure.3
One additional question came up regarding the impact on the existing warranty
for the air conditioning system as a result of the Ice Bear installation.In the case
of the unit at the fire station,the units had exceeded the standard industry
warranty of one year,as the unit was approximately ten years in age.In future
installations,Ice Energy's intention is to honor any warranty term that may be
existing on a system.
As a result of the information exchange,and because there were no significant
construction requirements,formal plan check with engineering design and
calculations were not required for the project;plans were approved over-the-
counter.
2.3.2 Construction
Construction began on September 9,2004.A contractor extended the
housekeeping concrete pad and relocated a gate to make room for the Ice Bear
and the condensing unit.Upon completion of the pad,Ice Energy delivered both
units on September 13. Electricity was supplied to both units,and Ice Energy ran
the refrigerant line sets up to and across the building's rooftop.Installation of the
Ice Bear involved brazing four copper lines,filling the tank with 500 gallons of tap
water,and setting the timer for the controller.
Installation was completed in one week from the time of delivery of the units,
after which the building inspectors were called to approve the installation.The
inspector required several modifications such as upgraded insulation on the
refrigerant line sets,sealing wall penetrations,protecting thermostat wiring in
conduit,and re-positioning the condensing unit to provide the necessary
clearance to the electrical disconnect switch.These corrections were made,and
the unit was approved on September 22.Figures 14 through 22 show the
construction progress.
3 Correspondence from Ice Energy,LLC,dated July 16,2004
17
041
Application of a Small-Scale Thermal Energy Storage System Anaheim Public Utilities
1`` 1 �� i tp t 1
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Figure 15. Placement of TES and Condensing Unit onto Concrete Pad
18
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Application of a Small-Scale Thermal Energy Storage System Anaheim Public Utilities
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Figure 16. Installation of New Evaporator Coil
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Figure 17. Refrigerant Lines on Facility Rooftop
19
043
Application of a Small-Scale Thermal Energy Storage System Anaheim Public Utilities
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i
G,f'- .1; Y''4, 3
a t'"6
li
Figure 18. Refrigerant Lines Along Wall, and Condenser Electric Disconnect
20
044
Application of a Small-Scale Thermal Energy Storage System Anaheim Public Utilities
`C
F,x;41` 4 y
,.-
r
111, --.: w 1,
Y.
F
E
j hiii
Figure 19.Aluminum Tape Wrapped Around Refrigerant Line Insulation
1
1
Ake,
Figure 20. Ice Forming on Coils Inside Ice Bear Unit
21
045
Application of a Small-Scale Thermal Energy Storage System Anaheim Public Utilities
1 I 04Mult
i
I
4i
Sr
i
,
Figure 21. Two-Stage Thermostat
giiiiiiiti—If'111
III
' s"- 4 . '" km iii; - -- . : , ,
; • ji
- d CYC.-..t °�" y�7, .
Figure 22. Completed Installation
22
046
Application of a Small-Scale Thermal Energy Storage System Anaheim Public Utilities
3M Results
3.1 Unit Data Analysis
Results indicate that the Ice Bear TES system was effective in reducing peak
demand. Figures 23 and 24 show the demand reduction by measuring demand
before and after the TES installation. Figure 23 shows that the peak demand
reached 7 kW in the late afternoon, which is consistent with the characteristics of
the facility energy profile shown in Figure 8. In addition, the duty cycle of the
compressor is apparent from the graph. During the warmest parts of the day, the
compressor is cycling consistently and frequently in order to meet the cooling
load.
Before Ice Bear, Hot Day (110 Roof Top)
RTU'
7.000
6.000 1 i
1
5.000 II 1 !!
Ul II I 111 11114.000 t
t
3.000 –__— -
2.000 11
3 I aI
1.000 l � 9 e 1
0000 _
12:00:00 AM 4:48:00 AM 9:36:00 AM 2:24:00 PM 7:12:00 PM 12:00:00 AM
Figure 23. Demand Profile Prior to Ice Bear Installation (Roof Top Unit)
In comparison, Figure 24 shows the demand profile after the installation of the
Ice Bear. Note that the demand during the peak hours has dropped significantly
from 7 kW to 0.3 kW. This equates to about 95% demand reduction for a similar
weather day. The Ice Bear condensing unit (green line) creates ice during off-
23
047
Application of a Small-Scale Thermal Energy Storage System Anaheim Public Utilities
peak hours. Note that the demand required for the condensing unit is lower
(approximately 3.5 kW), and the unit does not continuously cycle on and off.
Sample Day After Ice Bear ( 102 Degree Rooftop Temperature)
--IB —RTU —IB CU
7.000 -
6.000
5.000 I f
4.000 I 1
3.000
2.000
1.0004� i �
0.000 ----_ -_ _______ f3h raj[" irY1t3['Y1 h . I
12:00:00 AM 4:48:00 AM 9:36:00 AM 2:24:00 PM 7:12:00 PM 12:00:00 AM
Figure 24. Demand Profile After Ice Bear Installation
In order to determine the difference in energy between the Ice Bear and existing
air conditioning system, calculations were performed to estimate the energy
usage and duty cycles as if the existing air conditioning system were still running.
The estimated energy consumption profile was developed by using run time data
from the Ice Bear and correlating projected energy to temperature data. Figure
25 shows dotted lines that represent the estimated air conditioning profile over a
24-hour period (from 9AM to 9AM) for October 14, 2004 on a day in which the
maximum ambient temperature was 87°F.
In terms of energy savings, data in Table 2 shows that the energy is not reduced
by a significant amount. The energy savings over a 2 week span was 22 kWh (or
4.2%) against a 528 kWh baseline. The energy efficiency is a result of the
compressor operating more efficiently at night in a more uniform manner than the
constant starting and stopping during the day that the traditional system. From a
utility standpoint, the energy neutral aspect is a positive feature of the
technology, since it builds up off-peak load, and helps to level out the utility's
system peak profile.
24
048
Application of a Small-Scale Thermal Energy Storage System Anaheim Public Utilities
Combined Demand Profile (October 14, 2004)
6
5 - - 1 1
I
4 i 9 ; -
-- ' AC -Actual
.4�1� I. -ter_-
c 3 - a{ • 1 •, f 1 AC -Projected
it } I
0 2
Ii:
li `--- - Ice Bear
nuomigazrinto :.1 ►111111 I � I.
1 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0
ori .- M 6 I .: 66 N N r- cfi it)
Figure 25. Combined Demand Profile (Ice Bear and Existing Air Conditioner)
Table 2. Daily Energy Totals
Maximum Minimum
Ambient Ambient Energy Energy
Temperature Temperature Before Ice After Ice Difference
Day (F) (F) Bear(kWh) Bear(kWh) (kWh)
10/7/2004 84 56 62.2 56.7 5.5
10/8/2004 87 57 58.5 57.6 0.9
10/9/2004 78 59 47.2 43.3 3.9
10/10/2004 72 53 31.2 34.4 -3.2
10/11/2004 77 59 50.1 45.8 4.3
10/12/2004 83 63 50.0 47.8 2.3
10/13/2004 79 58 38.9 41.4 -2.4
10/14/2004 87 61 52.8 52.1 0.7
10/15/2004 77 61 35.7 38.8 -3.1
10/16/2004 66 58 22.0 20.7 1.4
10/17/2004 69 63 31.7 28.3 3.4
10/18/2004 70 62 25.1 24.3 0.8
10/19/2004 66 62 22.5 14.5 8.0
3.2 Facility Data Analysis
At the facility level, the results of the TES system can also be seen graphically.
Figure 26 shows two sample days of billing meter data. Facility data is shown for
September 5, 2004 before the Ice Bear was installed, and September 23, after
25
045
Application of a Small-Scale Thermal Energy Storage System Anaheim Public Utilities
the Ice Bear was installed. The differential in demand is generally 7 kW, from 20
kW down to 13 kW, which corresponds to the TES equipment differential.
Comparison of Facility Energy Consumption
(Before and After TES)
30 _
25 -
--
20 1 7kW y �'
f
a `
differentialto
c 15 ,
v
5
0
0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0
o N 4 CO CO o i (o co o N
r- .- e- N N
—9/5/2004 —9/23/2004
Figure 26. Facility Billing Meter— Before and After TES Installation
In reviewing data over the course of several months, the facility meter shows in
Table 3 that the there was a slight energy efficiency improvement. There was
also a slight decrease in the peak demand for the given months. This data
reinforces the unit data analysis in Section 3.1, which showed significant demand
reduction during on-peak hours and the slight energy efficiency improvement.
Because the facility is equipped with two separate air conditioning units, the
overall demand reduction would have been greater if both units were retrofitted
with TES systems. As Table 3 shows, over the 4 month period, there was a total
bill savings of $97.88, or $24.47 per month.
Table 3. Facility Billing Summary Comparison
Daily Peak
Energy Energy Demand
Feb-May Days (kWh) (kWh/day) (kW) Actual Bill
2004 (Before) 119 28,920 243.0 23.6 $2,795.64
2005 (After) 119 27,905 234.5 20.8 $2,697.76
Savings 1,015 2.8 $97.88
26
050
Application of a Small-Scale Thermal Energy Storage System Anaheim Public Utilities
3.3 Comfort and Availability
The Ice Bear has operated since September 2004 with no major issues in terms
of operation and maintenance.The only significant change that occurred during
the course of the project was the fact that two thermostats were requested by
Anaheim's Facility Maintenance group.The reason was to keep the existing
system and the Ice Bear separately controlled in the event that the TES system
would be decommissioned in the future.The thermostats were each programmed
with schedules to allow the Ice Bear to operate during the day and the existing
system to operate at night.Since Fire Department staff occupies the facility at
night,there is still a cooling load during off-peak hours.Operation of the
thermostats caused some confusion and in some cases both units were
operating at the same time.To alleviate this,one thermostat was removed
completely,and the programming was scheduled to take advantage of the two-
stage configuration.
Throughout the demonstration period,Ice Energy's staff periodically checked on
the system to ensure that the unit was operating properly.Other than the
thermostat issue,the TES system performed very reliably.During the
consolidation of the two thermostats,there were several complaints from the Fire
Department staff concerning building temperatures.This was alleviated by tuning
the system and removal of the second thermostat. As a result of these actions,
the comfort level improved significantly.Ice Energy currently has a technician
located in Southern California to address any future issues.
4.0 Future Plans and Applicability
The TES system continues to operate at the fire station.Anaheim will continue to
monitor the system and evaluate operation and maintenance for a full summer.
Several site visits have been conducted for interested parties including other
utilities.As a result of Anaheim's project,the Southern California Public Power
Authority(SCPPA),of which Anaheim is a member,has initiated a demonstration
program with other area municipal utilities.Up to 10 Ice Bear units will be
installed at various locations to further evaluate the technology.
Of interest will be the results which may vary due to the different facilities,cooling
loads,and regional weather patterns.For example,units installed in the dry
desert climate with higher temperature differentials are expected to have higher
efficiency gains than moderate,coastal climates.These anticipated operation
levels will be quantified for member agencies through data collection and
evaluation.An additional outcome of the SCPPA program will be to further
investigate funding sources,rates and incentives that may help accelerate the
adoption of small-scale TES in Southern California.
27
051
Application of a Small-Scale Thermal Energy Storage System Anaheim Public Utilities
The applicability of small-scale TES technology suits utilities with high on-peak
demand that is comprised of high air conditioning usage. Utilities have typically
met load growth with some method of generation and transmission planning.
Additionally, most utilities have a level of energy efficiency programs to help
customers lower their bills and lower overall consumption. Other methods of
mitigating peak demand include demand response programs, time-dependent
rates, and distributed generation incentives (e.g. photovoltaics and in some
cases, co-generation) are promoted to varying levels by utilities. TES is a small
part of this mix at present; however, with the inclusion of time dependent
valuation in the 2005 revision of California's Title 24 Building Code, shifting peak
load is encouraged. The California Energy Commission (CEC) adopted the 2005
changes to the Building Energy Efficiency Standards, for a number of reasons,
including the objective:
"To emphasize energy efficiency measures that save energy at peak
periods and seasons, improve the quality of installation of energy
efficiency measures, incorporate recent publicly funded building science
research, and collaborate with California utilities to incorporate results of
appropriate market incentives programs for specific technologies."4
The CEC recognized that energy use during peak demand is valued differently
than energy during off-peak hours. As a result, the CEC has developed Time
Dependent Valuation (TDV).
"Beginning with the 2005 Standards, the "currency" for assessing building
performance is time dependent valued (TDV) energy. TDV energy
replaces source energy, which has been the currency since the CEC first
adopted standards in 1978. TDV, as the name implies, values energy
differently depending on the time it is used. This means that electricity
saved on a hot summer afternoon will be worth more in the compliance
process than the same amount of electricity saved on a winter morning.
The value assigned to energy savings through TDV more closely reflects
the market for electricity, gas, propane and other energy sources and
provides incentives for measures, such as thermal storage or daylighting
that are more effective during peak periods."5
Anaheim is also evaluating the possibility of including residential-scale TES from
Ice Energy to be included as a portion of a new housing development.
Discussions are ongoing with the home builder to determine the level of interest.
Part of a demonstration project will focus on the Title 24 calculations for homes
with and without TES.
' http://www.energy.ca.gov/title24/2005standards/index.html, California Energy Commission
website.
5 2005 Building Energy Efficiency Standards, Nonresidential Compliance Manual, California
Energy Commission, CEC-400-2005-006-CMF, p.7.2-3.
28
052
Application of a Small-Scale Thermal Energy Storage System Anaheim Public Utilities
5.0 Schedule
The project was completed on schedule. All construction was completed in the
month of September 2004. Anaheim will continue to monitor the system to
capture additional summer data in 2005.
Table 4. Project Schedule
Task Status Completion Dates
1 . City Council approval of Completed Jun-04
agreement with Ice Energy
for delivery of TES unit
2. Prepare site installation Completed Aug-04
drawings
3. Obtain approval and Completed Sep-04
construction permits from
Building Division
4. Prepare site, including Completed Sep-04
demolition, pour concrete
pad, and install electrical
conduits
5. Deliver TES unit Completed Sep-04
6. Complete installation, Completed Sep-04
including installing
refrigerant lines,
evaporative coil, and
thermostats
7. Conduct system Completed Oct-04
commissioning
8. Perform preliminary Completed Oct-04
evaluation of unit
performance
9. Operate and maintain Completed Jun-05
system
10. Final report Completed Jul-05
29
053
Application of a Small-Scale Thermal Energy Storage System Anaheim Public Utilities
6.0 Budget
The project was completed within the allotted project budget. Of note, because
the pre-production unit operated exceptionally well, it was decided that an
upgrade to the production unit was not necessary, as all the major components
are the same. Rather, an extended warranty was provided to cover the pre-
production as if it were a new installation.
Item Description Budget Expended DEED
to Date _ Grant
1 Ice Energy (Monetary)
1.1 Pre-Production Unit $10,000 _ $10,000
1.2 Production Unit $10,000
1.3 Datalogging equipment $3,000 $3,000
2 Ice Energy (In Kind)
2.1 Project Management [80 $8,000 $8,000
hours @ $100/hr]
2.2 Construction Management $2,000 $2,000
[20 hours @ $100/hr]
2.3 Design and Engineering $3,000 $3,000
[20 hours @ $150/hr]
2.4 Data Analysis and $9,000 $9,000
Reporting [60 hours @
$150/hr]
3 Anaheim (Monetary)
3.1 Installation & $10,000 $10,000 ($10,000)
commissioning
3.2 Building permit fees $500 $166
3.3 Load profile meter and $1,000 $1,000
installation
4 Anaheim (In Kind)
4.1 Project Management [120 $6,000 $6,000
hours @ $50/hr]
4.2 Contract Administration $2,000 $2,000
[40 hours @ $50/hr]
4.3 Misc Staff Labor (setting $2,000 $2,000
up meter profile for
Internet accessibility,
other Department labor)
[40 hours @ $50/hr]
TOTALS $66,500 _ $56,166 ($10,000)
30
054
Application of a Small-Scale Thermal Energy Storage System Anaheim Public Utilities
7.0 Conclusions
The Ice Bear TES system was successful in shifting on-peak demand to off-peak
hours. It was retrofitted into an existing building and provided the cooling load
without sacrificing comfort for the occupants. The fact that the technology is now
available in a small form factor and is recognized in California's new building
code demonstrates that TES can be widely deployed to package air conditioner
throughout the United States. Utilities may benefit from this technology by using
TES to shape system load profile. Anaheim will continue to investigate the
technology through its demonstration at the fire station and by monitoring the
additional deployments by other municipalities. Based on those results, Anaheim
may provide up-front incentives to help reduce the capital costs in addition to
promoting time-of-use rates which helps provide a return on investment to
customers.
31
055
Appendix A. Ice Bear Product Brief
IVROMIII Vir:
4140
ICE ENERGY M
KEY BENEFITS _ ,.
.
` tf
• Reduces the lifecycle cost of air conditioning by up to 50%without ICE BEAR
sacrificing comfort
• Cuts up to 90%of peak demand tees associated with cooling
Day or Night peak shifting -
• Cuts energy costs by shifting consumption to ofl-peak,lower • I _
priced hours C
I I -.
• Saves energy by improving overall efficiency ,.,.., „�-"
• Takes advantage of lower priced off-peak electricity rates(Time- - '�
Of-Use pricing)by shifting energy consumption to off-peak hours �1 ¢
• Insulates your electrical bill from escalating peak demand charges rTi ,
• Protects and complements your existing air conditioning systems
investment 1 i- R `� `-
, . -: . ........... ,-'.- ' e
• Improves the comfort of your environment by reducing humidity
• Enables Cold Air Distribution further reducing energy ..."
consumption and operating costs
• Increases the efficiency of condensing units by operating in cooler
evening hours The Ice Bear is the industry's first refrigerant based
• Extends the life of condensing units by reducing the number of on Distributed Energy Storage Module.
and off cycles
• Reduces the environmental impact of unitai y air-conditioning by
eliminating the need for peak power generation and new ACTUAL EXAMPLE APPLIED TO A 5-TON
transmission lines ROOFTOP UNIT
• Delivers all of these benefits without sacrifice or changing how you
use or set your thermostat BEFORE
6k
KEY ERTURES Damantl&Gonsumpvdn
""i°"r'—'�•`+ Shifted to Off-Peak
5 kW '.�
• 50 Ton Hours of Capacity(42 Latent,8 Sensible) �r„
• 10 kW On-Peak load Reduction 4 kW ��
• --50 kW hr energy consumption shift to off-peak
3k
• Consumes-200W during the peak of the day to deliver
cooling(Ice Melt Mode) 2 kW .\
Ice Make ice Make
• Supplied with Ice Energy certified 5-Ton condensing unit Ends i Begms
1 kW
• High Reliability due to simplicity of design,One moving part SA
200 watts SAM 6PM
• Works with standard refrigerant-based air conditioning equipment
Condensing Unit,Evaporator Coils,Existing Copper Tubing Lines,Blowers,
Thermostats,Existing Electrical Service AFTER
• Installed by your choice of local HVAC contractor
Ice Energy's.patented technology was benchmarked by the National
• Small form factor approximately 6'x 5'x 5•
Institute of Standards and Technology and field tested by the Electric
• Maintenance-free Rotomolded Tank Power Research Institute arid National Ruial Electric Cooperatives
Corrosion-free HOPE material,Strong double-wall construction,Insulated
to R16,Lifetime exceeds 15 years,Protected against ultraviolet light Association,under a grant by the US Department of Energy,Office of
Innovations and Technology.
• User Friendly Controller
• Warranty:90 days labor.1 year parts,10 year tank
056
Ilird -'-
\rICE ENEi�C-. YTM
'-
PRODUCT OESCPIPTION
The Ice Bear is a low cost,off-the-shelf Distributed Energy Storage Module that reduces up to 10kW of on-peak electrical demand. The Ice Bear shifts
50 kW-hr of energy consumption to off-peak.the equivalent to running a 10 SEER.5-Ton air conditioner at full load for 8 hours. Installation takes about
4 hours and is as simple as brazing 4 copper tubing lines,filling the tank with tap water,and setting the off-peak hour clock. Operation is transparent to
the occupants of the building,a standard thermostat controls temperature. Unknown to the building occupant,the thermostat controls a quiet and
efficient 200 watt motor as opposed to a noisy and inefficient condensing unit, Users can anticipate a payback of two-ten years based on local utilty rates.
HOW ! -WORKS
-�"„r,r111rr0;
FIRST,A FEW KEY POINTS:
1. The Ice Bear complements the existing refrigerant based system currently used to cool your building. . -4°.
2. The Ice Bear uses ice as an energy storage vehicle. Five hundred gallons of water are stored in a long
lived,corrosion free,strong,insulated,and aesthetically pleasing tank. The water remains in the tank and
.M.' .
refrigerant moves through the lines.
3. A standard energy consuming 5-Ton condenser is used at night to make ice. During the cooling period the
condenser is switched-off and replaced by an efficient 200 watt motor that pumps refrigerant to deliver cooling.
OFF-PEAK PERIOD or ICE MAKE MODE lit.oli to main ee or night
Swathe-doff durxy the day
The Ice Bear uses a standard 5-Ton condensing unit to freeze water during off-peak hours when electric energy is
plentiful and less expensive.The system optimizes the efficiency of the condensing unit by running continuously until y r
the water is completely frozen in the tank. Fewer on-oft cycles translates into extended life and increased efficiency
On average,evening ambient temperatures are twenty degrees cooler than during the day Running the energy
consuming condenser during the relatively cooler evening translates directly into reduced energy consumption. In I
other words,an Ice Bear uses less energy,and at lower prices.The period for making ice is configured by setting a I
•
clock.An input is available to accept a price signal from a smart networked utility metering system.
COOLING PERIOD or ICE MELT MODE
When it's hot outside and you need cooling,the energy consuming and peak demand setting condensing
unit is switched-off.That's exactly what your local utility wants you to do because it reduces peak demand and tM‘"Its.?O,.at',daytime
strain on the grid. But,with an Ice Bear you don't have to sacrifice your comfort as the energy you need for
cooling was delivered the previous night and stored as Ice Energy fhe amount of stored energy is equivalent
to 50 kW-hr,about the same as running a 10 SEER,5-Ton condensing unit continuously for 8 hours.
,y
In the Ice Melt Mode,refrigerant is cooled when it is pumped through coils in the ice.The cool refrigerant is
Ia.
delivered to standard or existing evaporator coils where the existing system takes over: It is the same as what
you have, Your air conditioning system can't tell whether the refrigerant is being cooled by the Ice Bear or a
standard condensing unit,and neither can you.What you notice is improved comfort due to improved humidity
and temperature control and lower monthly electrical bills, Standout Stamford
f vaporata Coil s Refrtgsant
toes
CON ACTIO
for more information please contact: \ \
Ice Energy'"
Phone: 970.223 6138 Fax Fax 970.223.5740• Email: info@'ice-energy.com •www.ice-energycom ICE ENERGY-
2
NERGY"'2
057
gpso. lop op
A7_USA
.IG+lT d. 'WATFR
INFORMATIONAL ITEM
TO: HONORABLE CHAIRPERSON AND MEMBERS OF THE _ZUSA UTILITY
BOARD
FROM: GEORGE MORROW, DIRECTOR OF UTILITIES�i
DATE: FEBRUARY 22, 2010
SUBJECT: QUARTERLY FINANCIAL REPORT—DECEMEBER 31, 2009
Utilities staff recently initiated a process to formulate a quarterly financial report on the water
and electric funds. The attached tables provide financial information through December 31,
2009, for each fund and show cash flow and expected impacts on reserve balances and debt
coverage obligations as set forth in bond financing agreements.
Water Fund
At the end of last fiscal year, a significant operating deficit was forecasted for the Water Utility
for FY 2009-10, which led to a rate adjustment of 18% effective July 1, 2009. Even with the
increase, a continuing cash flow deficit was expected for FY 2009-10, and it was believed that
the water utility would not have enough "net revenue" to meet what is referred to as its "debt
coverage" obligation, whereby net revenues are to be 1.25 times annual debt service payments.
However, the water fund financial performance through the first two quarters of FY 2009-10 was
better than expected due to: (1) water right lease revenues of $1.1 million (made possible by
Watermaster waiving certain rules that allowed the water utility to lease excess water rights); (2)
increased rainfall which helped the water utility avoid some purchased water costs that were
contemplated in December; and (3) conservative use of funds by staff for outside services and
supplies.
When combined with the July 1 rate adjustment, the above factors have contributed to a
favorable financial performance for the water fund whereby net revenues appear to be about 1.74
times debt service requirements for the period through December 31, 2009.
While additional revenue and lower than expected expenses are a positive trend, the attached
table for the Water Utility shows that the water fund cash flow (including debt service payments
and capital spending) is negative by about $637,600. This is far better, however, than the $2
058
Quarterly Financial Report
February 22, 2010
Page 2
million deficit staff anticipated for the first half of this fiscal year. The cash flow deficit reduced
our reserve balance to about $23.6 million as of December 31, 2009, which is 94.2% of the
reserve policy target of$25 million for the Water fund.
Electric Fund
The Electric Utility likewise started off the fiscal year with a forecasted budget deficit of about
$6.5 million, including the capital improvement program expenditures of$1.7 million. Concerns
were raised by staff about not being able to meet the reserve policy requirement for the electric
fund of$20.27 million as well as not being able to meet net revenue requirements for compliance
with financing documents for the electric utility. To address these concerns, the Utility Board
adopted a 9.3% rate increase effective December 1, 2009 which is expected to provide $1.6
million by fiscal year end.
While earlier concerns were warranted, the financial performance of the electric fund through
December 31, 2009, shows a cash flow deficit of about $1.55 million, which is significantly less
than the deficit included in the approved budget. There are a couple reasons for this. First, retail
revenues during the first half of the fiscal year are typically higher than the second half of the
fiscal year due to higher temperatures during summer months. Second, management has moved
more cautiously on implementation of the Electric Utility's $1.7 million capital improvement
project budget. Contributing to the continued deficit are wholesale revenues, which continue to
lag behind where they were a few years ago. During the first half of the fiscal year, resale or
wholesale revenues were $1.7 million, which is well behind the annual forecast of$5.5 million.
According to the Comprehensive Annual Financial Report (CAFR) for FY 2008-09, 'Cash and
Investments' and the 'Rate Stabilization' account had a balance totaling $14.5 million at fiscal
year end June 30, 2009, which staff now considers to comprise our reserve balance. Based on
year-to-date billing amounts and actual or expected expenditures through second quarter of FY
2009-10, staff estimates that cash reserve for the Electric Utility fund to be about $13 million,
which is 64.1% of reserve policy target of$20.27 million.
Although the cash flow for the period is negative, when debt service payments, capital
expenditures and transfers to the City are excluded as part of the debt coverage calculation, net
revenues exceed debt service payments by 1.24 times, which would meet the debt coverage
requirement of 1.10 times if this trend continues through fiscal year end.
Prepared by:
Cary Kalscheuer, Assistant to the Director of Utilities
Water-Qtrly-Bud-Rpt Elec-Qtrly-Bud-Rpt.p
.pdf df
059
Water Utility Quarterly Budget Report
2nd Quarter Ended December 31, 2009
(UNAUDITED)
Consumption and Reserve Info Prior FY End 2nd Qtr Ended Percent
Consumption-CCF: 8,333,649 4,503,313 54%
Cash and Investments:w $24,195,856 $23,558,247 97%
FY 2009-2010 Budget Information Budget Actual Percent of
09-10 2nd Qtr Ended Budget
Revenues
Retail Billing Amounts(2) $15,176,020 $8,513,021 56%
Other Revenues") 1,019,000 1,494,106 147%
Interest Income 600,000 16,823 3%
Total Revenues $16,795,020 $10,023,950 60%
Expenses
Production $3,307,395 $1,274,433 39%
Purchased Water(4) 4,376,110 1,422,558 33%
Transmission and Distribution 2,782,025 1,007,218 36%
Customer Accounting and Sales(5) 4,145,026 2,068,841 50%
Administrative and General 1,000,670 320,815 32%
Franchise Fees 358,155 175,484 49%
Subtotal Expenses $15,969,381 $6,269,349 39%
Capital Expenditures/Debt Service:
Debt Service Payments(6) $4,518,170 $2,259,085 50%
Capital Improvement Budget(7) 10,106,277 2,998,524 30%
Capital Projects Funded by Bond (5,008,111) (865,399) 17%
Total Expenses(Less Bond Funding) $25,585,717 $10,661,559 42%
Adjustments
Transfers Outt $8,000 $0 0%
Total Expenditures and Transfers Out $25,593,717 $10,661,559 42%
Net Change in Cash (Negative) (8,790,697) (637,609) 7.3%
Debt Coverage Ratio(9) 0.26 1.74
Notes:
(1)Source:FY 2008-09 Comprehensive Annual Financial Report. Reserve Policy is$25 million.
(2)Based on Customer Information System Billing Amounts through December 31,2009.
(3)Includes One-Time Water Right Lease Payment by City of Arcadia in amount of$1,134,344.
(4)Includes additional amount of$632,674 for half fiscal year.
(5)Customer Service Allocation to Water Fund divided by 2 for half fiscal year.
(6)Principal and Interest on 2003 COP and 2006 Revenue Bonds divided by 2 for half year.
(7)Approved appropriations for multi-year projects,some of which are carryovers from prior year,including
$3,264,563 for water treatment plant,a now completed project.
(8)Half of the Interest Income is transferred out if there is positive net income.
(9)Total Revenues less Production,Purch'd Wtr,T&D,Cust Acctg,&A&G divided by Debt Svc Pymnts.
Minimum debt coverage requirement is 1.25 per bond financing agreements.
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Electric Utility Quarterly Budget Report
2nd Quarter Ended December 31,2009
(UNAUDITED)
Consumption and Reserve Info Prior FY End 2nd Qtr Ended Percent
12/31/2009
Consumption-kWh: 253,116,501 133,286,521 53%
Cash/Reserve Prior Fiscal Year End° $14,545,395 $12,990,953 89%
FY 2009-2010 Budget information Budget Actual Thru Percent of
09-10 12/31/2009 Budget
Revenue
Retail Billing Amounts(2) $29,971,645 $16,229,555 54%
Resale Revenue 5,500,000 1,674,031 30%
Other Miscellaneous Revenue 398,000 145,639 37%
Interest Income 650,000 172,008 26%
Total Revenues $36,519,645 $18,221,235 50%
Expenses
Purchased Power $25,580,000 $12,761,180 50%
Transmission/Dispatching 4,791,515 1,659,699 35%
Operations and Maintenance 4,797,665 2,067,196 43%
Administrative and General(3) 2,312,129 1,143,844 49%
Franchise and In-Lieu-Tax 2,960,223 1,652,171 56%
Subtotal Expenses $40,441,532 $19,284,089 48%
Capital Expenditures/Debt Service
Long Term Debt Service(4) $947,783 $473,892 50%
Capital Expenditures(5) 1,681,758 17,695 1%
Total Expenditures $43,071,073 $19,775,676 46%
Adjustments
Transfers Out(6) 8,750 0 $0
Total Expenditures and Transfers Out $43,079,823 $19,775,676 46%
Change in Cash/Reserve ($6,560,178) ($1,554,442) 24%
Debt Coverage Ratio(?) (1.01) 1.24
(1)Based on FY 2008-09 Comprehensive Annual Financial Report. Two items comprise this total: (a)Cash
and Investments;(b)Rate Stablization Fund Amount. Reserve Policy is$20.27 million.
(2)Actuals represent amounts billed based on Customer Information System report for December 2009.
Actual revenues received by Dec 31,2009 as reported by financial system were:$14,298,000.
(3)Consumer Service Allocation divided by 2 for half FY,plus Uncollectible Accounts.
(4)Based on annual debt service payments for Series B and C,2003 Certificates of Participation.
(5)Capital Improvement Project budget figures.
(6)Interest Income is transferred after fiscal year end if there is positive net income.
(7)Total Revenue less Cost for Purch'd Pwr,Trans,O&M,and A&G,divided by debt service.
Minimum debt coverage requirement is 1.10 per bond financing agreements.
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