St. Louis, Missouri
Year Founded: 1864
mccarthy.com
Total Kilowatts Installed Since Founded: 20,577,000
Number of Employees: 8,000
Having constructed more than 19 gigawatts (GW) of energy production and over 14 gigawatt hours of battery energy storage since 2010, McCarthy remains an industry leading EPC in utility-scale solar and storage solutions nationwide. With each project, we aim to serve as a community partner, rather than simply a builder. Through supporting developers with unique solutions such as vegetation management, stormwater pollution prevention, and AI-enabled technologies, we aim to construct projects that will shape and sustain the communities around them. At the heart of our projects are the numerous local workforce and community opportunities that drive our passion for solar.
2025 Solar Installations by State & Territory
| State / Territory | kW Installed 2025 | |
|---|---|---|
| Arizona | 1,602,000 | View state list → |
| Illinois | 1,371,000 | View state list → |
| Texas | 546,000 | View state list → |
| Louisiana | 130,000 | View state list → |
Lists 2012 – 2025
View 2024 Installation Data by State
| Illinois | 956,000 |
| Texas | 856,000 |
| Arizona | 662,000 |
| Ohio | 320,000 |
View 2023 Installation Data by State
| Texas | 1,005,000 |
| Nevada | 362,000 |
| Arizona | 195,000 |
| Ohio | 134,000 |
View 2022 Installation Data by State
| Nevada | 674,000 |
| Michigan | 373,000 |
| California | 345,000 |
| Colorado | 293,000 |
| Texas | 153,000 |
| Ohio | 30,000 |
View 2021 Installation Data by State
| Nevada | 400,000 |
| Colorado | 300,000 |
| Michigan | 217,000 |
| Arizona | 192,000 |
| Georgia | 114,000 |