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Westphal & Co.

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
Overall Rank · 2026 List
No. 30 Solar Contractor in the United States
Solar kW · 2025
352,109
solar kilowatts installed
Storage kWh · 2025
700,000
storage kilowatt-hours installed
Primary Service
Electrical Subcontractor
Utility
343,472
kW
C&I
5,773
kW
Community
2,864
kW

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 →
← Back to 2026 Top Solar Contractors
Prior Prior
Lists
2012 – 2025
2025
Rank #131  ·  2025 List  ·  2024 Installation Data
U | C&I | CS · Electrical Subcontractor
15,598
2024 Installation Data
View 2024 Installation Data by State
Wisconsin 15,598
View 2025 contractor list →
2024
Rank #31  ·  2024 List  ·  2023 Installation Data
Utility · Electrical Subcontractor
277,072
2023 Installation Data
View 2023 Installation Data by State
Wisconsin 277,072
View 2024 contractor list →
2023
Rank #39  ·  2023 List  ·  2022 Installation Data
Utility · Installation Subcontractor
130,800
2022 Installation Data
View 2022 Installation Data by State
Wisconsin 130,800
View 2023 contractor list →
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  • Home
  • Top Solar Contractors
  • Articles
    • Most Recent Posts
    • News
      • Latest News Items
      • SPW State News Hub
      • IRA/OBBBA coverage
      • Solar tariffs
      • U.S. manufacturing updates
    • Featured
      • Latest Feature Stories
      • Benchmarking U.S. Solar Manufacturing
      • SPW’s Rising Stars
      • Trends in Solar
      • The Solar Explorer
  • Policy
    • Latest policy headlines
    • IRA/OBBBA Coverage
    • Tariffs and Court Cases
  • Markets
    • Residential
    • Commercial
    • Community Solar
    • Utility
    • Storage
  • Products
    • 2026 Top Products application
    • Winners of SPW’s 2025 Top Products
    • Batteries and Storage
    • Electric Vehicle (EV)
    • Inverters
      • U.S. solar inverter manufacturers
    • Racking and Mounting
      • U.S. solar mounting manufacturers
    • Software
    • Solar Panels
      • U.S. solar panel manufacturers
  • Resources
    • About SPW
    • Digital Issues
    • Event Coverage
    • Podcasts
    • Product Manufacturing Locations
      • U.S. solar inverter manufacturers
      • U.S. solar mounting manufacturers
      • U.S. solar panel manufacturers
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    • Webinars / Digital Events
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  • 2026 Leadership
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  • Advertise
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