Get more involved in California's solar industry, and stay up to speed in industry trends through CALSEIA membership.

CALSEIA is the nations largest statewide solar energy association. Since the 1970s, CALSEIA has advanced the common interests of the California solar industry, helping make California's solar market the most robust in the United States. Comprised of California solar contractors, manufacturers, distributors, developers, utilities, engineers, consultants and educational organizations, CALSEIA represents a diverse membership committed to growing the California solar industry. 

See full list of benefits




The California Solar Energy Industries Association (CALSEIA) is the largest statewide trade association for the solar energy industry founded in 1977. Our member companies research, manufacture, distribute, finance, and build the solar projects that have made California's solar market the largest in the nation.

From the beaches of San Diego, to the hills of Northern California, and to the Capitol in Sacramento, CALSEIA is working hard to promote, protect and expand solar energy across the state both locally through our regional chapters and statewide through our policy initiatives. 

See why you need to become a CALSEIA member today!

Join CALSEIA now to help expand California's solar industry.

Questions about Membership? Contact Kelsea Jones at 916.228.4567


What Our Members Say...

"CALSEIA has either directly sponsored or been heavily involved in every single solar energy-related law or regulatory action in California since the mid-1970s.  For instance, if you think net metering is important to you and your business, it was CALSEIA that sponsored the original legislation in 1995. If you are in the solar business in California, you owe it to yourself to be a member."

Les Nelson
Director IAPMO Solar Heating & Cooling Programs


"CALSEIA advocates for all viable solar technologies. SunEarth works in the solar heating and cooling space and we sincerely appreciate CALSEIA's consistent and vigorous policy leadership in this area.”

Rick Reed
President SunEarth Inc.


“CALSEIA has a well deserved reputation in Sacramento for smarts and savvy; staff are known for their hard work and dedication to the cause of California’s solar stakeholders.” 

Rick Brown, PhD
President TerraVerde


Membership Dues 

CALSEIA Membership dues are based on the combined total of your California revenue from solar energy related products/services from the last fiscal year. All memberships are corporate, so all members of your organization are eligible for member benefits. 

Please note, CALSEIA membership dues are paid annually, and memberships expire twelve months from your enrollment date. 


CALSEIA’s Ethical Standards

By joining CALSEIA, you will become a member of an organization that is committed to the highest ethical standards for the solar energy industry and thus who consumers and other businesses trust. All CALSEIA member companies have agreed to adhere to CALSEIA’s Code of Ethics.


Join CALSEIA now to help expand California's solar industry.

Questions about Membership? Contact Kelsea Jones at 916.228.4567