Top 20 Solar EPC Companies for Utility-Scale Projects
The top 20 solar EPC companies for utility-scale projects are led by SOLV Energy, McCarthy Building Companies and Larsen & Toubro, based on the operating capacity each has built in Wiki-Solar's December 2025 ranking.
Together these 20 contractors have built 95.7 GWac of utility-scale solar. The list ranks EPC contractors by plants over 4 MWac that are already operating, so it rewards delivered capacity rather than pipeline.
The top 20 ranking
Select a region to filter the ranking.
- 1
SOLV Energy US
Includes Swinerton Renewable Energy. The largest utility-scale solar builder worldwide by operating capacity.
15.5 GW 227 plants
- 2
McCarthy Building Companies US
Employee-owned US builder with a large renewables division and solar plus storage track record.
8.5 GW 88 plants
- 3
Larsen & Toubro India
India's largest engineering group, active across India and the Middle East.
7.2 GW 61 plants
- 4
Eiffage Energie Systèmes France
Energy systems arm of the Eiffage group, strong in France and Spain.
6.3 GW 160 plants
- 5
Equans France
Multi-technical services group owned by Bouygues, with a long list of mid-sized plants.
4.5 GW 262 plants
- 6
Sterling & Wilson Renewable Energy India
Pure-play solar EPC with projects across India, the Middle East, Africa and Australia.
4.5 GW 76 plants
- 7
Belectric Germany
German pioneer of large ground-mounted PV, now part of the Elevion group.
4.4 GW 248 plants
- 8
First Solar US
Thin-film module maker that also built many early US utility plants.
4.3 GW 57 plants
- 9
Mortenson US
US contractor with large-scale solar, wind and storage work.
4.0 GW 30 plants
- 10
China Machinery Engineering Corporation China
A handful of large international plants.
3.8 GW 7 plants
- 11
ACME Solar India
Indian developer with in-house EPC for its own portfolio.
3.8 GW 50 plants
- 12
juwi Germany
Developer and EPC with projects in Europe, Africa and Asia Pacific.
3.7 GW 175 plants
- 13
Tata Power India
Builds through Tata Power Solar for its own and third-party projects.
3.6 GW 30 plants
- 14
Cox Energy Spain
Spanish group active in Spain and Latin America.
3.4 GW 40 plants
- 15
Enerparc Germany
Builder of a large number of mid-sized European plants.
3.3 GW 322 plants
- 16
Blattner Energy US
Quanta Services company and a leading US renewables contractor.
3.1 GW 20 plants
- 17
China Power Construction China
Three large plants in the Wiki-Solar data.
3.0 GW 3 plants
- 18
Gransolar Spain
Spanish EPC and tracker group behind PV Hardware.
3.0 GW 44 plants
- 19
Vinci Energies France
Energy and infrastructure services arm of the Vinci group.
2.9 GW 56 plants
- 20
Metlen (formerly Mytilineos) Greece
Greek industrial group with a large international solar EPC and asset-rotation business.
2.9 GW 101 plants
Source: Wiki-Solar, Top EPC contractors for utility-scale solar, December 2025. Operating capacity in GWac, plants over 4 MWac.
The US market in 2025
Annual installations tell a different story from cumulative capacity. In Solar Power World's 2026 Top Utility Solar Contractors, ranked by utility-scale capacity installed in 2025, Quanta Services led with about 6.1 GW, followed by Moss at 4.2 GW, McCarthy at 3.6 GW, Primoris at 3.2 GW and SOLV Energy at 2.5 GW. For turnkey contractors ranked for 2026, see our best solar EPC companies of 2026.
What lenders look for in an EPC
Project finance lenders want a fixed-price, date-certain EPC contract, delay and performance liquidated damages, and security such as a performance bond or advance payment guarantee. They also review the contractor's balance sheet, references on similar plants and the module and tracker supply chain. A strong EPC lowers construction risk and can improve debt sizing and pricing on the solar project financing.
Financing a utility-scale solar project?
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Frequently asked questions
Who is the largest utility-scale solar EPC contractor?
SOLV Energy, with 15.5 GWac across 227 operating plants in Wiki-Solar's December 2025 ranking, ahead of McCarthy Building Companies at 8.5 GWac.
How are these EPC companies ranked?
By operating utility-scale capacity they built, in GWac, for plants over 4 MWac, using Wiki-Solar's database. DC figures are typically about 25% higher.
Why do lenders care which EPC builds a solar project?
Lenders rely on a fixed-price, date-certain EPC contract, the contractor's balance sheet, performance security and liquidated damages. A tier-one EPC reduces construction risk and improves financing terms.
Is Financely an EPC or a lender?
Neither. Financely is an advisor and arranger. We help solar developers raise debt and equity and arrange performance security, and we close with banks, funds and private credit lenders.
Rankings and figures are taken from the linked Wiki-Solar and Solar Power World publications and reflect their methodologies and coverage. Inclusion is not an endorsement. This page is for general information only. Financely is an advisory and arranging firm, not a lender or broker-dealer.