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Full Spectrum Solar

Family-owned Wisconsin solar installer with 20+ years of experience serving Milwaukee, Madison, and Waukesha

Milwaukee, Wisconsin
4.7 (55 reviews)
Verified
Residential Commercial

22+

Years in Business

2,000+

Projects Completed

55

Customer Reviews

93 mi

Service Area

11-50

Employees

SurgePV Score

8.9 / 10
Customer Reviews
94%
Certifications
60%
Experience
100%
Services Range
100%
Warranty Coverage
80%
Online Presence
100%

About Full Spectrum Solar

Full Spectrum Solar is a family-owned and operated solar installation company founded in 2004, making it one of the longest-running solar providers in Wisconsin. The company is headquartered in Madison and serves the entire southern half of the state, including Milwaukee, Waukesha, Racine, Kenosha, and Janesville. Full Spectrum Solar installs complete solar electric systems for both residential and commercial customers.

The company handles all aspects of a solar project from initial consultation and system design through permitting, installation, and system commissioning. Full Spectrum Solar was selected alongside Arch Solar as a preferred installer for the Grow Solar Milwaukee-Waukesha community buying program, organized by the Midwest Renewable Energy Association and the City of Milwaukee. This competitive selection process validates the company’s pricing and installation quality.

With approximately 2,000 completed installations over two decades, Full Spectrum Solar brings deep knowledge of Wisconsin’s solar incentives, utility interconnection requirements, and climate-specific design considerations. The company maintains positive ratings across Yelp, EnergySage, and Google, and serves Milwaukee-area homeowners from their Madison headquarters. Their service territory covers approximately 100% of the state of Wisconsin.

Service Area

Full Spectrum Solar serves the following areas within a 93-mile radius:

MilwaukeeMadisonWaukeshaBrookfieldWauwatosaRacineKenoshaJanesvilleBeloitNew Berlin

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Services Offered

Solar Installation
Battery Storage
Solar Design
Monitoring
Maintenance
Commercial Solar

Certifications & Accreditations

Grow Solar Selected Installer

Partner Manufacturers

Warranty Coverage

Panel Warranty

25 years

Inverter Warranty

25 years

Installation Warranty

10 years

What to Expect: Solar Installation Process

1

Initial Consultation

Free site survey and system design

2

Quote & Design

Detailed proposal with costs and savings

3

Installation

Panels, inverter, and wiring (1-3 days)

4

Inspection

City inspection and utility interconnection approval

5

Go Live

Utility grants PTO, system goes live

Customer Reviews

4.7

55 reviews

Derek S.

12 September 2025
Verified Customer

Full Spectrum Solar installed a 10 kW system on our home in Waukesha. As a family-owned company with 20 years in the business, their experience was clear. The design was optimized for our roof and our production has exceeded estimates by about 8%.

Maria V.

6 May 2025
Verified Customer

We went through the Grow Solar program and Full Spectrum was our installer. Competitive pricing, professional installation, and great follow-up. Our system has been running perfectly for four months and we are saving real money on electricity.

John R.

28 December 2024
Verified Customer

Good company with deep Wisconsin solar experience. The installation was done well and the crew was respectful of our property. The only reason for four stars is that initial scheduling took a few weeks longer than expected due to their busy season.

Frequently Asked Questions About Full Spectrum Solar

What services does Full Spectrum Solar offer?

Full Spectrum Solar offers Solar Installation, Battery Storage, Solar Design, Monitoring, Maintenance, Commercial Solar.

Is Full Spectrum Solar NABCEP certified?

Full Spectrum Solar holds the following certifications: Grow Solar Selected Installer. Contact them directly for the latest accreditation details.

What areas does Full Spectrum Solar serve?

Full Spectrum Solar serves Milwaukee, Madison, Waukesha, Brookfield, Wauwatosa, Racine, Kenosha, Janesville and 2 other areas. They are based in Milwaukee with a service radius of 150 km.

What warranty does Full Spectrum Solar offer?

Full Spectrum Solar offers 25-year panel warranty, 25-year inverter warranty, and 10-year installation/workmanship warranty.

How are Full Spectrum Solar's customer reviews?

Full Spectrum Solar has a 4.7/5 rating based on 55 customer reviews. Customers consistently rate them highly.

How long has Full Spectrum Solar been in business?

Full Spectrum Solar was founded in 2004 and has been in business for 22 years. They are one of the more experienced solar installers in their area.

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