Transcript
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CSI-Thermal Implementation Timeline
• May 1, 2010: Started accepting single family residential applications
• October 2010: Target date for accepting multi-family and commercial applications
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CSI-Thermal: Customer Eligibility
• Gas water heating customers of PG&E, SDG&E, or SoCal Gas- Retrofit and new construction
• Electric water heating customers of PG&E, SDG&E, or SoCal Edison- Retrofit projects only
• Propane users are NOT eligible, even if they are electric customers of the above utilities
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CSI-Thermal: Technology Eligibility
Eligible: • Domestic Solar Water Heating Systems
Not Eligible: • Pools and Spas
May be added to the program at a later date: • Other solar thermal technologies (i.e.
space heating and cooling)
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Incentives• 4 step declining incentive structure• Single Family: Based on SRCC OG-300
savings• Multifamily/Commercial (SRCC OG-
100)• Small systems: based on a TRNSYS
estimator • Large systems: based on 12 months of
metered performance data• Different incentive amounts for
natural gas vs. electric displacing systems
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Natural Gas IncentivesStep Customer Class Dollar per therm
displacedIncentive Cap Budget Allocation
1 ResidentialCommercial/Multifamily
$12.82 $1,875$500,000
$20 Million$30 Million
2 ResidentialCommercial/Multifamily
$10.26 $1,500$500,000
$18 Million$27 Million
3 ResidentialCommercial/Multifamily
$7.69 $1,125$500,000
$18 Million$27 Million
4 ResidentialCommercial/Multifamily
$4.70 $688$500,000
$16 Million$24 Million
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Electric IncentivesStep Customer Class $/kWh displaced Max Incentive
1 ResidentialCommercial/Multifamily
0.37 $1263$250,000
2 ResidentialCommercial/Multifamily
0.30 $1,025$250,000
3 ResidentialCommercial/Multifamily
0.22 $750$250,000
4 ResidentialCommercial/Multifamily
0.14 $475$250,000
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Program Requirements
• SRCC certified equipment• Permits on all projects• Technical requirements- sizing,
freeze protection, overheat protection, and metering
• Mandatory installer workshop
Focus on QUALITY!!
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Contractor Participation:
•Must have an active A, B, C-4, C-36, or C-46 License
•License holder must attend a one day workshop
•Maintain eligibility: 3 installations per year or attend workshop annually
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Current Residential Program Status• # of residential applications
received= 50• PG&E= 28• CCSE/SDG&E= 18• SoCalEdison= 2• SoCalGas= 2
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Current Residential Program Status cont.• Total # of residential
applications paid= 33 • 20 electric displacing: $979
average incentive• 13 gas displacing: $1,456 average
incentive
• Number of eligible contractors = 168
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Solar Water Heating Pilot Program (SWHPP)• 319 single family projects (July
2007-2010)• Fuel Displacement:
• Electricity: 141• Natural Gas: 115• Propane: 63
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Residential Statistics by System Type
Indirect- Glycol
Active, Closed Loop
Thermosyphon Passive, Closed Loop
Indirect- Drainback Active,
Closed Loop
Direct - Recirculation Active, Open Loop
Integral Collector
Storage
Passive, Open Loop
Number Installed 132 75 66 34 12
Average Cost $6,987 $6,692 $6,889 $6,207 $5,529
Average Rebate $1,324 $1,180 $1,213 $1,408 $924 Average kWh
Savings 2939 kWh 2510 kWh 2717 kWh 3226 kWh 2100 kWhAverage Therm
Savings 130 therms 115 therms 119 therms 141 therms 97 therms
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Statistics Summary
• Most common system in San Diego: Indirect - Glycol
• Average price range: $5,500 - $7,000• Average performance range:
• 2100-3200 kWh • 97-141 therms
• Each system has unique characteristics, with differing pros and cons
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Energy Savings=Financial SavingsDisplacing Electricity:• Average home uses 4,000 kWh
annually for water heating (purchased from utility)
• Average SWH system saves 2,820 kWh
• 4,000-2,820= 1180 kWh purchased from utility
70% savings= 70% reduction on water heating costs
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Energy Savings=Financial SavingsDisplacing Gas:• Average home uses 200 therms
annually for water heating (purchased from utility)
• Average SWH system saves 123 therms
• 200-123= 77 therms purchased from utility
60% savings= 60% reduction on water
heating costs
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Testimonials from your neighbors• We installed a solar hot water
heater and our December natural gas savings was 54% -Mark S., San Diego
• We just received our first natural gas bill after installing a solar water heater and we have reduced natural gas usage by 83% over last year –Glen B., San Diego
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