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For over three decades, the Colorado Solar and Storage Association (COSSA) has been the primary trade association for companies installing solar and energy storage across Colorado. With extensive knowledge of the market and regulatory framework within the 271 municipalities, 64 counties and 53 electric utilities inside our beautiful state, COSSA is your source of key intelligence for how to grow your business.


Representing hundreds of solar and storage business members, COSSA works to advance clean energy policies, remove market barriers, highlight emerging trends, and increase solar and storage education. COSSA membership includes a wide range of companies from small companies installing off-grid systems to multinational solar and storage developers. With multiple annual events, a strong ecosystem of expertise, and prominent clean energy supporters, COSSA is your trade association to ensure continuous, long-term success.