The United States had a record-breaking 2024, and that success is reflected in the installation numbers on the 2025 Top Solar Contractors List released today by Solar Power World. The No. 1 contractor installed more than 10 GW last year, a remarkable feat that represents 20% of the entire market in 2024.
The country installed nearly 50 GW of new solar capacity in 2024, the largest single year of new capacity added to the grid by any energy technology in over two decades. Quanta Services, a conglomerate of heavy-hitting installation companies including Ampacity, Blattner Energy, Cupertino Electric and The Ryan Company, completed solar projects in 32 states last year for a total of 10.1 GW — and 4.3 GWh of energy storage — to take the No. 1 spot on the 2025 Top Solar Contractors List.
“We knew 2024 would be an impressive year for our utility-scale contractors, especially when 16 GW came online in Q4 alone,” said Kelly Pickerel, editor in chief of Solar Power World. “But even more impressive was how successfully local markets closed the year, especially as the residential market was hit by the bad PR that comes with big-name companies closing shop. Americans want and need solar, and the Top Solar Contractors are more than capable of delivering.”
Installations by Top Solar Contractors were recorded in every state — even North Dakota, which is regularly last in the nation (even behind Washington, D.C., and Puerto Rico) for annual installations. This year should also end on a high note as installation companies continue to complete the necessary energy projects that will keep the increasingly strained national electric grid functioning. As the federal government attempts to topple the growing solar industry — which is far outpacing any new fossil fuel production — the thousands of Americans employed at Top Solar Contractor companies will continue the fight against climate change and misinformed government leaders.
“Regardless of how the solar and storage industries are reflected in legislative language, there’s enough momentum behind clean energy to keep things moving in 2025. Solar Power World is looking forward to the 2026 Top Solar Contractors List that will celebrate the tenacity of solar contractors working through this tough year,” Pickerel said. “But right now, we’re celebrating the incredible accomplishments performed by solar installation companies across the country in the last year. Congratulations to the 2025 Top Solar Contractors, and thank you for your dedication to this great industry.”
The Top Solar Contractors List is the most recognized annual listing of solar contractors in the United States. Companies on the Top Solar Contractors List are grouped and listed by specific service (developer, electrical subcontractor, EPC, installation subcontractor, installer, sales partner), market (commercial, community solar, residential, utility) and states by 2024 installed capacity (in kWDC).
Here are some ways to interact with the 2025 Top Solar Contractors List:
- Go to the web-based 2025 Top Solar Contractors List
- Get a PDF version of the main list + our special infographics
- Read our Top Solar Contractor features from the magazine
Lists of contractors by market:
- Top Utility-Scale Contractors
- Top Commercial-Scale Contractors
- Top Residential-Scale Contractors
- Top Community Solar Contractors
Lists of contractors by service:
- Top Solar Developers
- Top Solar EPCs
- Top Electrical Subcontractors
- Top Installation Subcontractors
- Top Solar Installers
- Top Sales Partners
- Top Solar + Storage Installers
Individual lists of contractors in all 50 states and 3 districts/territories:
Other interesting facts about the 2025 Top Solar Contractors List:
- The Top 5 states in which Top Solar Contractors installed are California, Illinois, Texas, New York and Pennsylvania.
- Of the Top Solar Contractors that work in the commercial market, 73% primarily complete rooftop projects. Meanwhile, 98% of community solar contractors are installing ground-mounts over roof-mounts.
- 41% of TSCs are primarily non-utility-scale installers; 38% identify as EPCs; 10% are developers; 10% are subcontractors; and 1% perform sales-only tasks.
- A survey sent to all listees found that 53% of contractors find it is harder to operate a solar business today than compared to their first year.
- Of all the markets, TSCs believe the commercial market will see the most growth in 2025, followed by residential and then community solar.
For more information on the annual Top Solar Contractors List, please read our FAQs.
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