Solar Installers in the U.S.

The United States has one of the fastest-growing solar installation markets in the world, driven by falling panel costs, tax incentives, and strong demand for clean energy at every scale. Across all 50 states, thousands of solar power system installers are designing and deploying solutions that range from small residential rooftops to large commercial facilities and community solar projects.

Installers serve as the critical bridge between solar technology vendors and end-users. They manage site assessments, permitting, system design, and the physical installation of panels, inverters, and batteries. Many also provide financing packages, maintenance services, and long-term monitoring to ensure systems perform at peak efficiency.

As the industry evolves, installers are increasingly integrating battery energy storage (BESS), enabling backup power and grid services; designing microgrid-ready systems for critical facilities; and aligning projects with state renewable portfolio standards (RPS). Together, they form the backbone of solar deployment and a vital link in the clean energy supply chain.

The following is a list of solar power installation companies in all 50 states in the U.S.: