Power Sources


Sonoma Clean Power is committed to reducing greenhouse gas emissions, supporting our local economy and providing competitively priced service. That’s a lot of goals, and no one power source can deliver all of them.

That’s why we use a combination of sources.

36% of the energy delivered through SCP’s default CleanStart service currently comes from renewable sources, and that’s growing quickly to 50% by 2020.


Qualifying renewable sources (wind, solar, geothermal, etc.): 36%
Large hydropower (also carbon free): 41%
General systems power (diverse source mix): 23%



Local renewable power (starting with geothermal + adding solar over time): 100%


For CleanStart, we keep costs competitive by buying a mix of hydropower, geothermal, solar, biomass and wind, and we still use some natural gas sources. We’re aiming to continue reducing our use of fossil sources over time, but we’ve already got a great start. EverGreen uses only 100% local renewable resources, without the use of unbundled renewable energy credits.

We partner with PG&E to give you a Power Content Comparison for 2015.

2015 Power Content Label


SCP currently has 30 MW of local geothermal power from the Calpine Geysers facility in Northern Sonoma and Southern Lake Counties which will grow to 50 MW in 2018. We are proud to have the Geysers in our backyard because it is one of the world’s largest geothermal energy fields, which began producing power in 1960.

Power is made by pumping fully treated wastewater from Sonoma County deep into the ground where hot rocks heat the water, creating steam, which runs turbines.


NetGreen is Sonoma Clean Power’s Net Energy Metering (NEM) program offered to customers who have solar or other small renewable generation systems installed at their homes or businesses. A special meter tracks the difference between the amount of electricity produced by the renewable generating system and the amount of electricity used by the customer (during each billing period). When NetGreen customers generate more electricity than they use, the meter spins backward.

Customers who switch to SCP and are enrolled in PG&E’s NEM program will automatically be enrolled in NetGreen. There is no need to fill out new or additional forms and there are additional financial benefits associated with participation in SCP’s NetGreen program.

You can learn more about NetGreen here.

Feed-In Tariff

Sonoma Clean Power now operates ProFIT to help encourage the construction of new local renewable energy systems. Learn more at ProFIT.