Member of the solar container branch of the power supply association

You can either search by a specific company or business type. You can also search Contractor/Installer companies by their CSLB license number. * Directory includes CALSSA members and companies who have submitted membership applications. Have questions or comments about our website? Contact us. The California Solar & Storage Association (CALSSA) is the state’s largest clean energy business group with over 700 member companies representing an array of businesses that manufacture, design, install, finance and provide other resources. Competitive power suppliers are bringing the benefits of competition to all Americans. EPSA member companies provide reliable, least cost electricity from environmentally responsible generation facilities using a diverse mix of fuels and technologies, including natural gas, nuclear, storage. The U.S. solar industry installed 11.7 gigawatts (GW) of new capacity in Q3 2025, marking the industry’s third-largest quarter on record and pushing total installations this year past 30 GW. SEIA embodies the innovation and entrepreneurship that defines solar energy. Join SEIA today to make a. The Electric Power Supply Association (EPSA) advocates for well-functioning, competitive wholesale electricity markets to reliably power the nation’s homes and businesses at the lowest cost. We foster the innovation and sustainable environmental progress needed to achieve societal and environmental. You can either search by a specific company or business type. You can also search Contractor/Installer companies by their CSLB license number. * Directory includes CALSSA members and companies who have submitted membership applications. For further details please contact our Membership Director at. Our over 700 member companies represent an array of businesses that manufacture, design, install, finance and provide other resources to the growing local solar and storage market in California. They range from single-person start-ups, to family-run solar contracting firms, to leading multinational.