Katrina phruksukarn solar thermal

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Katrina Phruksukarn09/16/2010

CSI-Thermal Program &

Residential SWH Projects

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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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Residential SWH Projects

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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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Solar Water Heating Program Contact• Katrina Phruksukarn - Program

Manager• [email protected]• 858.244.7290

• www.energycenter.org/swh• www.gosolarcalifornia.org/

solarwater