Our Members Lead the Way in California's
Clean Energy Future
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 corporations. Join us!
Membership indicates professionalism and credibility.
Members are required to sign and adhere to a Code of Ethics.
Members are in the know and better able to serve customers with regular updates and insights on market conditions, upcoming policy changes, and technical and code changes.
CALSSA is the largest and most recognized state-based trade association representing the rooftop solar industry.
Our members are the true leaders. They have the industry's back by investing in growing California's solar and storage market through membership.
Memberships by Business Type - Shown in Percentages
Represented Technologies
Solar electric (photovoltaic)
Battery & energy storage
Solar thermal for water heating, process heat, cooling, space conditioning
Concentrating solar for electric generation, process heat, and cooling
Solar pool heating for recreational, athletic, municipal, and therapeutic pools
Power Electronics
Racks, Mounts and Trackers
Software