HomeMy WebLinkAboutMINUTES - 12182001 - SD.2 TO: ' BOARD OF SUPERVISORS "s ...
Contra
FROM: JOHN SWEETEN, COUNTY ADMINISTRATOR01 ®Std
DATE: December 18, 2001
�SrA�oUK County
SUBJECT: Installation of Solar Power Cells at the Martinez
Detention Facility and 50 Douglas Drive
SPECIFIC REQUEST(S)OR RECOMMENDATION(S)&BACKGROUND AND JUSTIFICATION
RECOMMENDATIONS:
1. APPROVE the installation of solar electric projects at the Martinez Detention Facility, 1000
Ward Street, and at 50 Douglas Drive, also in Martinez. '
2. DIRECT the Director of General Services to schedule a public hearing under California
Government Code Section 4217.10 et seq to enter into an energy services contract for
installation of solar electric projects at County facilities.
3. DIRECT the County Administrator to proceed with a debt issuance for the installation cost
of solar electric projects.
FISCAL IMPACT:
As proposed, the two solar facilities would generate 379,120 kWh per year of electricity,
reducing County expenses by about $70,000 initially at current energy rates. In addition to
producing free, clean electricity, the photovoltaic panels insulate and protect the roof, lowering
demand for HVAC and roof maintenance costs.
The following table compares the cost to the County of project installation with anticipated
savings over a 25 year period. Because expenses and revenues will accrue at different points
in the future, they are discounted into present dollars for purposes of comparison. The
analysis assumes that energy prices will increase by 1.5% annually over the cost of inflation.
CONTINUED ON ATTACHMENT: x_YES SIGNATURE: J
KECOMMENDATION OF COUNTY ADMINISTRATOR RECOMMENDATION OF BOARD COMMITTEE
—APPROVE OTHER
r
SIGNATURE(S):
ACTION OF BOA O December 18, 2001 APPROVE AS RECOMMENDED XX OTHER
VOTE OF SUPERVISORS I HEREBY CERTIFY THAT THIS IS A TRUE
AND CORRECT COPY OF AN ACTION TAKEN
XX UNANIMOUS(ABSENT None ) AND ENTERED ON THE MINUTES OF THE
BOARD OF SUPERVISORS ON THE DATE
AYES: NOES: SHOWN.
ABSENT: ABSTAIN:
ATTESTED December 18, 2001
CONTACT: JOHN SWEETEN,CLERK OF THE
BOARD OF SUPERVISORS AND
COUNTY ADMINISTRATOR
CC:
BY DEPUTY
Initial Installation Cost $1,996,207
PG&E Rebate 998.104
Net Installation Cost $ 998,104
Other expenses (Operations and Maintenance agreement) 105,500
Total Net Present Value of expenses* $1,034,604
Net Present Value of Revenue Savings $3,142,904
Cost/Benefit $2,039,300
* Estimate of total expenses assumes that project installation costs are paid in a lump sum this
fiscal year. If the cost is financed (see below) the NPV of expenses is $971,819 and the
Cost/Benefit is $2,171,085.
Financing Options
Rather than appropriate the full installation amount this year, the Board could choose to
finance the initial cost over time. Looked at in NPV terms, there is a saving of approximately
$132,000 if the installation cost were financed. (See attached table for detailed cash flow
comparisons.)
Upfront payment of Installation Costs: The payback of the project would take 10 years. In
later years, the photovoltaic cells would generate free power for the County. Viewed as an
investment, payment of costs upfront generates a return of 10.3% over the 25 year useful life
of the system.
Finance Installation Costs: If the initial installation cost is instead financed at the current
interest rate of 4.27%, the County avoids a large initial outlay of cash this fiscal year. The
debt service could be structured so that energy savings would cover between 96% and 108%
of debt service costs. The cash flows under this scenario are positive each year with the
exception of five years between 2011 and 2016. Once the loan is repaid in Year 15, the
County would receive free power from the photovoltaic installations. It is difficult to quantify
these cash flows as an investment since there is no initial outlay or cost. Instead, based on
these assumptions, financing the solar electric facility will generate revenue for the County.
BACKGROUND:
In March of 2001, the Board of Supervisors adopted the Energy Reduction Action Plan and
requested that staff investigate opportunities for alternative energy generation such as solar
energy.
Concurrently with implementation of the Energy Reduction Action Plan, the Internal
Operations Committee of the Board proposed a policy regarding sustainability in County
facilities. The sustainability guidelines promote a life cycle approach to facility decisions. The
recommendation of the Committee, adopted by the Board in August of 2001, calls for
evaluating energy efficiency improvements and other sustainability measures as if they were
an investment and comparing them to the County's cost of funds which is now less than 5%.
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= 309 kWp
PowerGuard
Photovoltaic
System
Energy Cost Savings
Environmental Benefits.
Roof Protection and Insulation
Provided by:
.ice fiVVv�
7P O W 1E R L I G H T
The Leading Systems Integrator for Solar Electricity
P O W E R L 1 G H T`"'
S 0 L A R E L E C T R I C S Y S T E M S
Contra Costa County - 309 kWp PowerGuard Photovoltaic System
Table of Contents
1. Introduction
a. Executive Summary
b. Co-funding: PG&E Self-Generation Incentive confirmation
c. Cover Letter
2. Project Benefits
a. Electricity & Roofing
b. Environmental
c. Education and Data Monitoring
3. Solar System Description
a. PowerGuard
4. . Representative PowerGuard Array Drawings
a. 50 Douglas Drive building
b. Martinez Detention Facility
EXECUTIVE SUMMARY
Project Summary
PowerLight proposes the following turnkey photovoltaic
(solar electric).roofing system for Contra Costa County's
�.
Martinez Detention Facility(MDF) and 50 Douglas Drive • . ., -
Size: 309-kWp produced by the solar array; 32,000 ft2 of %
otherwise under-utilized.rooftop real estate
Performance: 380,000 kWh/yr, offsetting the most \
expensive daytime and summer utility power
Design Life: 30+ years; 25-year manufacturer's "
warranty on solar electricity generation from PV modules
Economic Evaluation
% of Gross Price
Turnkey system price $ 1.996M 100%
PUC/PG&E incentive - 0.998M
Net after PUC/PG&E incentive $ 0.998M 50%
Projected net system savings over 25 years: $ 2.062M
Internal Rate of Return (financed) 25%
Years of cost-free electricity after payback period 15+
Co-funding: Self-Generation Incentive
As established by the California Public Utilities Commission and administered by PG&E, the "Self-
Generation Incentive Program" provides financial incentives to customers who install clean on-site
distributed generation. Contra Costa County's proposed solar electric system for the MDF and 50
Douglas facilities qualifies for this program and to that end, on November 27, PG&E confirmed the
reservation of funding for these projects (documentation enclosed).
Product Specifications
PowerGuard°photovoltaic roofing system — photovoltaic modules factory-mounted to standard
modular roof tiles
Electricity cost savings, HVAC cost savings, roof maintenance cost savings
Patented, UL-listed, low profile and light-weight
• No penetrations or additional support structures required on roof
Controlling Electricity Expenses
The PowerGuard system is a timely and practical investment, especially in the context of the current
electricity marketand'importance of energy independence. In addition to generating clean, high quality
and reliable electricity, the proposed PowerGuard system will provide an effective hedge against
unstable electricity prices caused by(among other factors) the recent elimination of retail electricity
competition in CA; increasing reliance on volatile natural gas as the primary fuel for electric generating
power plants; outdated and constrained transmission infrastructure; and uncertain costs of long-term
power,contracts purchased to meet the State's growing electricity demand.
PowerLight Corporation
PowerLight is the leading developer of solar electric systems in the U.S. PowerLight customers include
Johnson and Johnson, Inc. Cypress Semiconductor Corp., power utilities nationwide, as well as federal,
state and local agencies. PowerLight has developed and installed the largest rooftop PV systems in the
US including a 650 kWp PowerGuard in Northern California. Founded in 1991 and profitable since
incorporation, for the past two years, PowerLight has been named among Inc. Magazine's 500 fastest
growing privately held companies.
Pacific Gas and
Electric Company
Anlin Ting-Mason US 141..
Vice President Mail Code 9298
Internet Services and Pacific Gas and Elactric Company
Business Dovolopment PC.Box 770000
San Francisco,CA.94177-0001
Ot�rrrgnf A9ad:
November 27, 2001 Mail Code 6298
Pacilic Gas and Electric Company
77 Beale Street,Room 2905
San Francisco,CA 94105 1614
415 973.3133
Mr. Rick Whisman ax:415.s731s10
PowerLight Corporation
2945 San Pablo Avenue
Berkeley, CA 94710
Re: Self-Generation Incentive Program, Conditional Reservation Notice Letter
and Program Contract
Dear Mr. Whisman:
This letter confirms that a conditional reservation has been approved for your
proposed self-generation project (copy of submitted Reservation Request Form is
enclosed).
Application Number: A-52
Reservation Number: PGE-01-034
Host Customer Company Name: Contra Costa.County,..Martinez
Detention Facility
Host Customer Address: 2099 Arnold Industrial Way, Suite D
Concord, CA 94520
Facility Address: 1000 Ward Street
Martinez, CA 94553
System Type / Size: Photovoltaic / 957.8 kW
Reservatiotl Dollar Amount: $651,750
Project Advancement Milestone Date: February 26, 2002
Please note that this conditional reservation is only.valid until the Project
Advancement Milestone Date shown above and that no incentive payment will be
made until after the final field verification inspection is completed. All requirements
to receive an incentive payment must be met and are outlined in the Self-
Generation Incentive Program Handbook. The most current version is available on
the PG&E website at v\fvjw.pge.com/selfgen.
Mr. Rick Whisman
November 27, 2001
Page 2
On, or before, the Project Advancement Milestone Date indicated above, the
documentation called for in Section 3.2 of the attached contract, as well as a
detailed project cost breakdown, must be submitted to demonstrate project
advancement.. Failure to.submit the required information by the Project
Advancement Milestone Date, or failure to request and be granted an extension,will
result in the cancellation of this reservation.
If you have any questions concerning this Conditional Reservation Notice Letter, or..
the 90-day project advancement requirements, please contact Dean Heatherington
at (415) 973-2362.
Sincerely,
14
cc. Dennis Garidel (Contra Costa County, General-Services Department)
Dean Heatherington (Manager, Self-Generation Incentive Program)
PaciCc Gas and
Electric Company
.less A.Brown 77 Beale Street,Room 2901
Director San Francisco,CA 94 105-181 4
Business Development Mailing Address
Mail Code 629R
PO Box 110000
San Francisco,CA 94177.0001
November 27, 2001 415.973.0369
Fax 415.973.2510
Mr. Rick Whisman
PowerLight Corporation
2945 San Pablo Avenue
Berkeley, CA 94710
Re: Self-Generation Incentive Program, Conditional Reservation Notice Letter
and Program Contract
Dear Mr. Whisman:
This letter confirms that a conditional reservation has been approved for your
proposed self-generation project (copy of submitted Reservation Request Form is
enclosed).
Application Number: A-53
Reservation Number: PGE-01-035
Host Customer Company Name: Contra Costa County
Host Customer Address: . 2099 Arnold Industrial Way, Suite.D
Concord, CA 94520
,Facility Address: 50 Douglas Drive
Martinez, CA 94553
System Type / Size: Photovoltaic/ 102.8 kW
Reservation Dollar Amount. $425,700
Project Advancement Milestone Date: February-26, 2002
Please note that this conditional reservation is only valid until the Project
Advancement Milestone Date shown above and that no incentive payment will be
made until after the final field verification inspection is completed. All requirements
to receive an incentive payment must be met and are outlined in the Self-
Generation Incentive Program Handbook. The most current version is available on
the PG&E.website at www.pge.com/selfgen.
Mr. Rick Whisman
d November 27, 2001
Page 2
On, or before, the Project Advancement Milestone Date indicated above, the
documentation called for in Section 3.2 of the attached contract, as well as a
detailed project cost breakdown, must be submitted to demonstrate project
advancement. Failure to submit the required information by the Project
Advancement Milestone Date, or failure to request and be granted an extension. :will
result in the cancellation of this reservation.
If you have any questions concerning this Conditional Reservation Notice Letter, or
the 90-day project advancement requirements, please contact Dean Heatherington
at (G 15) 973-2362.
Sincerely,
cc: Dennis Garidel (Contra Costa County, General Services Department)
Dean Heatherington (Manager, Self-Generation Incentive Program)
P O W E R L I G li T T''
S 0 L A R E L E C T R I C S Y S T E M S
December 2001
Barton J. Gilbert
Director of General Services
Contra Costa County
1220 Morello Avenue, Suite 200
Martinez, California 94553-4711
Subject: 309-kWp PowerLight Solar Electric Systems for:
}J
Contra Costa County
Dear Mr.Gilbert:
Thank you for the opportunity to present a 309-kWp solar electric project with PowerGuard rooftop
systems located on the 50 Douglas Drive building ('50 Douglas") and the Martinez Detention Facility
("MDF"). After a review of several buildings with the DGS, these buildings were selected due to their
considerable energy consumption and the acceptable condition of their respective roof areas.
As with all of our projects, PowerGuard systems will provide County facilities with electricity,
insulation, roofing, and environmental benefits for 30 years, while continuing to demonstrate the
County's leadership and commitment to clean air and independent energy solutions — particularly
impressive as California works through its current energy challenges.
Founded ten years ago, PowerLight Corporation is the leading solar system developer in the U.S.,
and the only systems integrator that specializes exclusively in large-scale systems. For the second
consecutive year, Inc. Magazine ranked PowerLight Corporation as one of the nation's 500 fastest
growing firms.
PowerGuard is PowerLight Corporation's flagship solar product. The many PowerGuard systems
operating throughout the nation and.overseas include a 225-kW system for Johnson & Johnson's
Neutrogena factory and a 650-kW PowerGuard recently installed for the County of Alameda — the
largest rooftop solar system in the U.S. Other PowerGuard owners in Northern California include the
Chabot Space and Science Center, the East Bay Regional Parks District, Cypress Semiconductor,
Christiano Properties, PMI Mortgage and the International Brotherhood of Electrical Workers Union.
PowerGuard system will look similar to those shown in the photos on the following page.
............................................................ ........................................................ .. .......................:.............. ...................................... .....................................................
.................:............ ....................................... .. ............................................... ......................
2954 San Pablo Ave,Berkeley,CA 94702 P:510.540.0550 F:510.540.0552 www.powedight.com
Sample PowerGuard Systems:
_.Ltd:�-__�•__,.,�,�_ -__
120 kW PowerGuard rooftop
PV s3:stem for. the City of
Anaheim on the Anaheim
Convention Center
�.l,,,�;,fr-�F.:v,�}.y '^ iyY1s
Z 1.11 110 kW PowerGuard
–San Diego
PowerGuard can be installed over
�-- = 1Y
virtually any secured roof .surface j
including built-up, gravel ballasted, .roll
roofing-and many others: — - -
f.
35 kW PowerGuard-
Chabot Science Center
Page 2 of 6
PowerGuard Electricity and Roofing Benefits:
Electricity Benefits. PowerGuard will bring many significant electricity benefits to Contra Costa
County, including:
• Lower Electricity Purchases. Electricity purchases from the utility, PG&E, will be reduced by
decreasing the total electricity drawn from the utility(kWh) and by reducing the monthly demand
(kW), particularly the more expensive summer electricityand daily peak electricity.
• Hedge Against Future Electricity Price Jumps. Because the cost of PowerGuard electricity over
three decades is essentially known on the first day of operation, PowerGuard provides a hedge
against.future price jumps. like those seen recently. More utility electricity price increases are
possible in the near.future as.power plant and transmission grid construction lose ground to the
State's increasing demand for electricity. In California, utility electricity rates are also being
pressured upward by the elimination.of retail competition, the disproportionate reliance on the
volatile natural gas market for power plant fuel, and the uncertain effects of long-term power
purchases by the State.
• Reduced Pressure on CA Electrical Grid. As an on-site power plant, your PowerGuard system
will help California reduce peak critical demand and transmission constraints. For example, on
hot summer days when California's grid. is .most prone to require electricity curtailments or
blackouts, the offered PowerGuard system will reduce the demand of your buildings by up to 300
kW.
• Higher Quality Electricity. The electricity generated by your PowerLight photovoltaic system will
be higher quality than utility electricity by. avoiding "noise" generated across the utility's
transmission and distribution network.
Roofing Benefits. Contra Costa County benefits won't stop at electricity; PowerGuard also provides
roofing value:
• Energy-conserving roof insulation (R-10)
and shading (R-9 or greater).saves heating
and cooling costs. Even in.unconditioned
buildings, PowerGuard will improve the
comfort of your employees and. visitors,
keeping them warmer -in-the winter and -�
cooler in the summer. y
• Roof life extension of up to 36 years from
PowerGuard's protection'against UV rays
and thermal cycling. PowerGuard reduces
roof temperatures up to 900 F, an.important
factor in extending roof membrane life and
avoiding expensive re-roofing and repair work;
• Low weight (array weighs-only 5.5 Ibs/ft2), ensuring'code compliance and compatibility with
building's existing structure;
• No roof penetrations, PowerGuard is the ONLY UL-listed, lightweight interlocking roof-tile PV
system on-the market. The old-fashioned method of roof mounting PV modules requires building
custom metal .racks and.bolting them to the roof in hundreds or thousands of locations posing
potential leakage.hazards. The.freedom from penetrations also keeps your roof's warranty intact.
Page 3 of 6
Environmental Benefits:
By implementing the PowerGuard solar system, Contra Costa County will bring significant
environmental savings and air quality improvements to your community as well as contribute to
resource conservation,worldwide. Based on U.S. EPA estimates considering California's present mix
of electricity sources, the County's PowerGuard systems over their 30-year design life will remove
over 19,000 tons of the primary greenhouse gas CO2, equivalent to the amount of CO2 absorbed by
86 acres of trees. The system will also save the equivalent of over 2.2 billion cubic feet of natural
gas to be drilled or imported, and provide other environmental benefits as specified in the chart
below:
Air Quality Resource Conservation
Smog 160;446 lbs.NOx oil. .30,902 barrels,or
Acid Rain 256,714 lbs_SOx Coal 10,156 tons,or
Globalmillion
Warming 19,254 tons CO2 Natural'Gas 2,246 cubic ft
Assumes Average U.S. Utility Industry Values
These environmental savings are equivalent to:
The carbon 'dioxide absorbed by 86 acres of'trees
over 30 years
- The emissions from driving a car for 763,31-7
miles over 30 years
Page 4 of 6
Education and Data Monitoring Benefits:
Data Acquisition System - The data acquisition system will continuously monitor,PowerGuard and
store performance'data as 15-minute averages. PowerLight's Data Acquisition System consists of a
data logger that records AC power (kW), Ambient Temperature (C), Irradiance (W/m2), and Wind
Speed (m/s). For the first year, PowerLight imports and stores this data using a custom data
processing program that monitors out-of-range values, calculates daily summaries, and simulates PV
performance based on recorded meteorological conditions.
Data Posting on the World Wide Web - Once the data is processed, PowerLight uses a graphical
software program to generate daily graphs that display AC Power, irradiance, wind speed, and
temperature. This information is then uploaded to a web server that allows facility managers to
monitor the monthly and daily performance of the system over the World Wide Web. County facility
managers will have full access to this data in graphical form via PowerLight's web site during the first
year of operation, as shown in the center figure below. Continued web-posting services by
PowerLight after the first year would be available for a nominal extended services fee.
Display Kiosk in Building Lobby- Not'only will this graphical information allow facility managers to
quickly and conveniently check the PowerGuard system, it also will be appropriate for a display kiosk
in the building lobby publicizing the solar system to visitors and.employees. The appropriate kiosk
can be quoted upon request. An example display kiosk is shown below:
P—Light Hw Lan 15 Nowmo Av gr Oem
OR
MM M 5.00:00 AN to MGM$#8:00:00 PN
I?S -..;._..... ...:......... ...... 9020 G_
...:. �..•....:....:... __- fly' .- -
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a 1
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5
n �
, s..: .. .. _. .: .. ...... 6ro'00 6m:n i,m ,m:rrim,.mism Err„mr6u 9a•:rom
�,NG 6w°d;Mrl,6ryN;Mr1, NTm•rwwu.,t)
mI .
�POWERLIGHT .
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Page 5 of 6
PowerGuard Project Description:
A PowerGuard system has six major components:
1. PowerGuard Modules, which incorporate the photovoltaic cells
2. PowerCurb along the perimeter of each array of PowerGuard Modules, which serves as an
aesthetically-pleasing mechanical border and wind spoiler
3. Terminal. Boxes internal to the PowerCurb for guiding module cabling into a waterproof
conduit
low", nDID p� �r p n n� ih i di di d
1P: '� �►�IIJI II-ltii�i , r'n n n•r Ali fi dl Ji d1
4. Combiner Box in the electrical
room next to the service panel k- i,eL R;Y., ••v v v „1„ di
�rte-tr".
, uu� • � onve FiiL iL
for merging multiple cables into «;� ,��=LLQ-� r` •
' ur•r•d nr:gr:nnvga i..iOi L Ar
a single cable and for = 1:� •.a. =
overcurrent protection _ Hi',s
5. High-efficiency DC-to-AC
inverter next to the serviceOWNS
-.���-��.•�� �Y�„��.�,��.
panel to coordinate with the
utility power
6. Data acquisition system, L.
integrated with the inverter
The Martinez Detention Facility and the 50 Douglas PowerGuard systems are sized at 180-kWp and
119-kWp, respectively. According to preliminary design, the system is projected to produce
approximately 380,000 kWh per year, as simulated by our computer programs using four-decade
weather data from the U.S. Department of Energy.
As shown in the attached PowerGuard design drawing, the County's PowerGuard systems will
comprise 8 arrays on the buildings' roof, covering a total of 32,000 ftz. The cabling from the arrays
will all converge into existing roof conduits (or
PowerGuard Modules. PowerCurb, new conduits in the roof or wall), to a combiner
box and inverter, and subsequently connected
Terminal Box to a 208 and 480-Volt service panel.
The offered PowerGuard project is turnkey
including required materials, shipping, lifting,
installation, commissioning, a 25-year
photovoltaic module warranty, a 5-year
inverter warranty from Trace Technologies,
R and a 5-year comprehensive warranty from
\ Inverter, PowerLight on the remainder of the system.
Combiner Box
Interconnection to Building Electrical Panel
Page 6 of 6
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