Mike Goodison Sent via email: mgoodison@ci.davis.ca.us
Public Works Department
City of Davis
23 Russell Blvd.
Davis, CA 95616
This correspondence is written regarding the City of Davis program proposal entitled "Davis Comprehensive Energy Efficiency Program" (DCEEP). We request the following additional information regard your proposal:
· What resources, including financial incentives, are associated with the Emerging Renewable Resource buydown portion of your program? Please break this down by measure, including estimated number of units, and customer class (e.g. residential, commercial, industrial).
· Please provide detail on the "cool roofs" portion of your program. For example, how many roofs, and associated square feet are estimated? What process will be used to deliver this measure? What financial incentives are associated?
A response should be provided via e-mail, by noon on Tuesday, March 19, 2002. Please send your response to tdh@cpuc.ca.gov. If you wish to mail a hard copy as well, please use the address listed in the above letterhead, Attn: Tuukka Hess, Energy Division.
Thanking you in advance for your prompt response,
Energy Division Staff
CPUC
Mike Goodison
Public Works Department
City of Davis
23 Russell Blvd.
Davis, CA 95616
(530) 757-5686
19 March 2002 Sent Via email: tdh@cpuc.ca.gov
Tuukka Hess
Energy Division
California Public Utilities Commission
505 Van Ness Avenue
San Francisco, CA 94102-3298
Dear Tuukka Hess:
This is to respond to your request for information with regards to our grant proposal under rule R01-08-028. You had two questions:
1. What resources, including financial incentives, are associated with the Emerging Renewable Resource buydown portion of your program? Please break this down by measure, including estimated number of units, and customer class (e.g. residential, commercial, industrial).
2. Please provide detail on the "cool roofs" portion of your program. For example, how many roofs, and associated square feet are estimated? What process will be used to deliver this measure? What financial incentives are associated?
Question (1) was presumably triggered by the passage on page 10 of our proposal, where we stated,
"As in the earlier City-sponsored workshops, we will assist Davis residents with Emerging Renewable Resource buydowns offered by the Energy Commission."
The short answer to question (1) is that the program offers no direct financial incentives, but rather provides information and "hand-holding" designed to ease the process of selecting a photovoltaic system, getting it financed, permitted, and installed, and obtaining the CEC rebates. The workshops held last year, sponsored by the City and SMUD, had two main outcomes. First, over 100 residents signed up for the joint City of Davis/SMUD Residential PV Program, taking advantage of SMUD's bulk purchase of low-cost PV panels; over 25 systems (mostly 1-2 kW each) have been installed to date, and another 10 systems are in the works. The City developed an accelerated, low-cost permitting process for the `standard' Residential PV Program installation. The second outcome of the workshop was the formation of a `Solar Club' of residents interested in installing their own systems; 6 systems have been installed so far.
Looking forward, plans are underway to hold another series of solar workshops, and if our proposal is funded, these workshops could be expanded to combine PV with EEMs for greater impact. Also, the City is presently investigating plans under which it could continue to offer access to the low-cost panels purchased in bulk by SMUD, using public/private partnerships; the most likely option would have the City's administrative expenses largely covered by fees paid by those purchasing systems. These programs do not have specific targets for numbers of systems, but we believe we can improve upon the past number of installations by making more information available to more people as described in our grant proposal.
The Emerging Renewable Resource buydowns are mentioned in the context of our proposal because we intend to offer `one stop shopping' for access to information on EEMs and renewables.
Question (2) asks for more information on the "cool roofs" items in the proposal. Our proposal is designed to complement the CEC cool roofs program, which offers a $0.15/sq.ft. rebate until November, 2002, and is aimed primarily at owners of refrigerated buildings. The savings for the multifamily cool roof program were calculated as follows.
Model the typical multifamily (apartment) building as a 6,400 sq. ft. building with (8) 800 sq. ft. units (either single story or 8 top-floor units). For purposes of this calculation, we assumed the apartment building is in need of re-roofing and we are providing the incentive for them to select the high-reflectivity alternatives. The building roof must be low-slope and the surface being replaced must have a reflectivity of less than 30% (most built-up roofs have a reflectivity of ~20-25%). Each unit is assumed to use 800 kWh/year for air conditioning and saves 20% after application of a >65% reflective coating. Thus each typical building converting to cool roofs saves 1280kWh/yr. Peak demand should be reduced by 1kW. The typical white elastomeric coating costs $1/sq. ft. and lasts 10-15 years; a complete tear-off and re-roof costs $2/sq. ft. and lasts 20 years.
The proposal conservatively estimated that 5 such apartment buildings would be converted to cool roofs under the program (Appendix A of the proposal, page 20). The financial incentive is $0.25/sq. ft. This shows up in Appendix B of the proposal, page 22, as $1,600 per building. For simplicity, we did the cost-effectiveness calculations assuming the CEC cool roofs program ends this November. If it is extended, we would modify the program adding $0.10/sq. ft. to the $0.15/sq. ft. CEC program.
We hope this response fully answers your questions. Please contact us if you need any more information.
Sincerely,
Mike Goodison
Assistant to the Director
City of Davis Department of Public Works
J:\pw\adm\elect\energy task force\Reply to 116CityofDavisDataRequest
STATE OF CALIFORNIA GRAY DAVIS, Governor
PUBLIC UTILITIES COMMISSION
505 VAN NESS AVENUE
SAN FRANCISCO, CA 94102-3298
March 13, 2002
