Top Solar Companies in California

Our directory ranks the top 32+ solar companies in California by verified review score, NABCEP certification status, warranty terms, and project completion rate. The shortlist is led by locally-owned, NABCEP-certified installers concentrated in the state's largest metros. Use the filters above to compare by city, rating, and service type.

Residential solar systems in California typically cost $16,000–$26,000 installed. California's net billing rules favor pairing solar with battery storage for best economics The federal residential ITC (Section 25D) expired December 31, 2025, so state and utility incentives are now the main driver of net cost.

California homeowners may benefit from California Solar Initiative, DAC-SASH for low-income households, and NEM 3.0 net billing through the IOUs. Solar leases and PPAs may still capture the commercial 48E credit indirectly. Ask any contractor on this page for a current incentive stack analysis specific to your address and utility.

Every state maintains a contractor licensing database — typically operated by the state's Department of Consumer Affairs, Contractors State License Board, or Board of Electrical Contractors. Ask the contractor for their license number and verify it directly. Top Solar Services confirms license status before issuing the Verified or Premier Verified badge.

For many California homeowners, yes — particularly where retail electricity rates are high, net metering exists at retail or near-retail rates, and state rebate or SREC programs apply. The federal residential 25D credit expired December 31, 2025, which has stretched typical payback periods, but lifetime savings on a 25-year system remain positive in most cases. Solar leases and PPAs (third-party owned systems) may still capture the commercial 48E credit indirectly through pricing.