Westphal & Co.
Madison, Wisconsin
Year Founded: 1931
westphalec.com
Total Kilowatts Installed Since Founded: 776,517
Number of Employees: 900
Rank: 30
Westphal & Company is a fourth-generation, family-owned business that is now proudly woman-owned. Since 1931, we’ve grown into one of the Midwest’s top electrical contractors, delivering complex, high-performance solutions across industries including solar, industrial, government, healthcare, education, and science & technology. Our people-first culture gives our team the tools, trust, and opportunities to grow both professionally and personally.
★ 2026 Top Solar Contractors
#30
Solar kW · 2025
352,109
solar kilowatts installed
Storage kWh · 2025
700,000
storage kilowatt-hours installed
Primary Service
Electrical Subcontractor
2025 Solar Installations by State & Territory
| State / Territory | kW Installed 2025 | |
|---|---|---|
| Illinois | 183,070 | View state list → |
| Wisconsin | 168,946 | View state list → |
| Iowa | 93 | View state list → |
Prior
Prior
Lists 2012 – 2025
Lists 2012 – 2025
2025
15,598
2024 Installation Data
View 2024 Installation Data by State
| Wisconsin | 15,598 |
2024
277,072
2023 Installation Data
View 2023 Installation Data by State
| Wisconsin | 277,072 |
2023
130,800
2022 Installation Data
View 2022 Installation Data by State
| Wisconsin | 130,800 |