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How many certificates is my system entitled to?

The number of STCs a solar water heater or solar photovoltaic panel (small generation unit) is entitled to is calculated by determining the amount of electricity the solar water heater displaces or the amount of electricity a solar photovoltaic system produces over a determined period (called a deeming period) given that the installation and ongoing use of the system will reduce demand on the electricity grid.  Systems are usually deemed for the maximum period of 15 years for solar photovoltaic panels and 10 years for solar water heaters to receive the maximum amount of STCs upfront. 

If you would like to determine the number of STCs your system could receive, the REC Registry contains calculators for SGUs and SWHs: 

• Small Generation Unit Calculator
• Solar Water Heater Calculator