CSI-Thermal Program Incentive Levels

The CSI-Thermal program provides rebates to utility customers who install solar thermal systems to replace water-heating systems powered by electricity or natural gas. 

On January 29, 2015, the Commission adopted Decision 15-01-035, which modified the Program's incentives for a second time, as shown in the tables below. The new rebate levels apply to all applications received on or after July 23, 2014. 

On May 6, 2016, Energy Division approved temporary additional incentives for the installation of solar water heating systems to address the need to reduce natural gas use in the Aliso Canyon impacted area that can be installed this year. The following new rules will apply only to systems in SoCalGas service territory that are installed by the end of 2016. The following modifications are included in the tables below:
  

  1. Increased rebate rates for general market single family and multifamily/commercial applications in Step 1. Rebates are modified from $29.85/therm to $70/therm and from $20.19/therm to $25/therm, respectively. 
  2. Reallocated funds from later Steps 3 and 4 to the new, higher Step 1 incentives for single family and multifamily/commercial general market funds. 
  3. Removed the 50% rebate cap that limits the pool incentive from covering more than 50% of a project’s cost. 

Natural Gas-Displacing Solar Water Heating Incentives

Natural Gas-Displacing Solar Water Heating Incentives
Natural Gas 


 Step 
Single-Family 
Multifamily/Commercial  
Incentive Rate ($/therm/yr) SCG only in parenthesis 

 

Maximum Incentive Residential Systems 

Incentive Rate ($/therm/yr) SCG only in parenthesis  PBI
 

Maximum Incentive MF/Commercial Systems 

  
1

$29.85 ($70)

$4,366 (10,238) $20.19 ($25) $10.10 ($12.50) $800,000
2 $25.37 $3,710 $17.16 $8.58 $800,000
3 $14.30 ($0) $2,091  $10.15 ($0)  $5.08 ($0) $800,000
4 $3.23 ($0) $472 $3.13 ($0) $1.57 ($0)
$800,000

  

Electricity-Displacing (and Propane-Displacing) Solar Water Heating Incentives

Electricity-Displacing (and Propane-Displacing) Solar Water Heating Incentives
Electric / Propane 


 Step 
Single-Family 
Multifamily/Commercial  
Incentive Rate ($/kwh/yr)   

 

Maximum Incentive Residential Systems 

Incentive Rate ($/kwh/yr)    

Maximum Incentive MF/Commercial Systems 

  
1

$0.54

$1,834 $0.42 $250,000
2 $0.38 $1,311 $0.29 $250,000
3 $0.22 $752  $0.19 $250,000
4 $0.10 $329 $0.09 $250,000

Solar Pool Heating Incentives

Solar Pools
  Solar Pools 
Step  Incentive Rate ($/therm/yr) 

 

Maximum Incentive  

1 $5.00 $500,000
2 $5.00 $500,000
3 $4.00 $500,000
4 $3.00 $500,000

 

* Rebate capped at 50% of total system cost (Rebate cap temporarily lifted in for Southern California Gas customers) 


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