What Full Spectrum Solar does

Full Spectrum Solar, founded in 2002 by brothers Burke and Mark — both UW-Madison Mechanical Engineering alumni — is a private, family-owned solar installation contractor headquartered in Madison, Wisconsin, with a secondary office in Waukesha. The company designs, installs, and services solar electric (photovoltaic) systems for residential, commercial, institutional, agricultural, and rural customers across southern Wisconsin, and explicitly positions itself as a consultative, no-sales-pressure installer rather than a transactional solar retailer. Reported firmographics list 11-50 employees, two physical locations (1240 East Washington Avenue, Madison; 2110 Pewaukee Rd, Waukesha), and a single Wisconsin-focused operating territory.

The core product is a grid-tied photovoltaic system using North American-manufactured panels, paired with home battery backup solutions (Enphase as the primary platform; Tesla, SolarEdge, Franklin, and Generac as alternatives), Level 2 EV charging station installation, and a dedicated post-installation service department that handles diagnostics, repair, communications/monitoring reconnection, and critter-guard installation — for both Full Spectrum-installed systems and systems originally installed by other companies. The firm also runs a specialized solar roof-removal and reinstallation service for reroofing projects, priced at $325 per panel, and introduced a hail damage assessment service with an interactive pricing calculator after the April 2026 Wisconsin hailstorm. Pricing is quote-based rather than published; example systems on the website run from $16,000 (10-14 panels, small residential) to $38,000 (22-26 panels, medium residential), with claimed ROI windows of 10-16 years and 25-year warranty coverage.

The business model is primarily project-based, one-time installation revenue augmented by recurring service and maintenance work, battery hardware revenue, and partner-mediated demand from the Grow Solar Milwaukee-Waukesha Group Buy program (joined April 2026). Customer acquisition is heavily referral-driven through 192 Google reviews at an Excellent rating; the firm explicitly states it de-prioritizes paid marketing in favor of word-of-mouth economics. Commercial customers include Oregon School District, City of Monona, Capital Brewery, Organic Valley Co-op, Willy Street Grocery Co-op, Parmenter Circle Apartments, and Home Harbor Racine Assisted Living, alongside individual residential and rural farmstead projects. The firm holds Madison Magazine 'Best Solar Contractor' recognition and NABCEP certification. No external funding, investor, or parent entity is disclosed; ownership and operational control remain with the founding brothers.

Name

Full Spectrum Solar

Legal name

Full Spectrum Solar

Website

https://fullspectrumsolar.com

Company type

Private

Founded year

2002

Operating status

Operating

Headcount range

11–50 employees

Short description

Full Spectrum Solar is a family-owned Wisconsin solar installer founded in 2002, providing photovoltaic system design and installation, battery backup, EV charging, and ongoing service for residential, commercial, agricultural, and institutional customers across Madison and Waukesha/Milwaukee.

Ownership category

akta.pro rank

Product category

Solar Installation Services

NAICS

Solar Electric Power Generation (221114), Electric Power Generation, Transmission and Distribution (2211)

SIC

Electric Services (4911)

akta.pro primary industry

Solar EPC & Construction (Utility-Scale, Rooftop, Balance of System) (EUAMABAB)

akta.pro secondary industries

Solar End-of-Life, Recycling & Decommissioning (Panels, Inverters, Racking) (EUAMABAM), Solar Panel Cleaning (HSAEAJAL)

Keywords

• Residential solar installation
• Commercial solar systems
• Solar panel maintenance
• Home battery backup
• EV charging installation

Headquarters

HQ city

Madison

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Supply Chain, Operations, Marketing or Sales, Technology or R&D

Revenue model

1. Solar Electric System Installation: Complete solar panel system design, installation, and commissioning for residential, commercial, and rural customers in Wisconsin. Revenue generated through one-time installation fees based on system size and complexity.
2. Solar Removal and Reinstallation Services: Specialized services for reroofing projects requiring solar system removal and reinstallation. Priced per panel at $325/panel for standard module removal, storage, and reinstallation.
3. Maintenance, Diagnostics, and Repair: Ongoing service department providing troubleshooting, repairs, communications reconnection, and critter guard installation for existing solar systems. Services both Full Spectrum-installed systems and those installed by other companies.
4. Home Battery Backup Systems: Battery backup system design and installation, primarily using Enphase battery platforms, with options for Tesla, Franklin, and Generac solutions. Partial-home and whole-home backup configurations available.
5. Electric Vehicle Charging Station Installation: Level 2 high-current EV charging station installation performed by state-licensed electricians. Service available with or without solar system installation.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

Full Spectrum Solar is a full-service solar electric installer providing photovoltaic system design, installation, and commissioning for residential, commercial, and rural customers across Wisconsin. The company complements its core solar installation offering with home battery backup solutions, Level 2 EV charging station installation, solar roof removal and reinstallation services, and a dedicated service department that handles diagnostics, repair, and hail-damage assessment for both its own installations and third-party systems. Pricing is quote-based with transparent per-panel unit pricing for specialized services.

Product overview

Full Spectrum Solar is a full-service solar electric installer offering a comprehensive portfolio of solar energy products and services. The core offering is Solar Electric (Photovoltaic) systems for residential and commercial properties, complemented by Home Battery Backup solutions using Enphase, Tesla, SolarEdge, Franklin, and Generac systems. Additional services include Solar Roof Removal & Replacement, Electric Vehicle Charging station installation, and Service/Maintenance & Repair. The company also provides specialized Hail Damage Assessment services and interactive Cost Estimator tools. Services are offered across Wisconsin including Madison, Waukesha, and Milwaukee areas.

Differentiator

Problem solved

Functional benefit

Products and services

• Solar Electric (Photovoltaic) Systems Complete solar photovoltaic system design, installation, and commissioning for homes, businesses, and rural properties. Includes panels that collect sunlight, inverters that convert DC to AC power, and net metering for utility billing optimization.
• Home Battery Backup Systems Battery storage systems that keep critical home loads running during power outages. Primarily designed with Enphase battery systems, with additional options for Tesla, SolarEdge, Franklin, and Generac solutions. Configurations include partial-home and whole-home backup.
• Electric Vehicle Charging Station Installation Level 2 high-current EV charging station installation performed by state-licensed electricians, with load calculations to ensure adequate electrical service. Available with or without a paired solar system installation.
• Solar Roof Removal and Replacement Professional solar panel removal before reroofing and reinstallation after roof replacement. Includes safe removal, storage, labeling, equipment handling, and system testing. Priced at $325 per panel for standard modules with adders for steep or second-story roofs.
• Solar Service, Maintenance & Repair Diagnostics, repair, and maintenance services for existing solar installations, including systems originally installed by other companies. Covers performance issues, communication and system monitoring reconnection, and Critter Guard installation.
• Hail Damage Assessment and Support Storm damage assessment services for roofs and solar systems, including visible damage evaluation, rough pricing guidance to support insurance discussions, and detailed pricing reports after site assessment.

Quantifiable outcome

• Small residential systems (10-14 panels) can achieve $90/month electric savings with $16,000 estimated cost, up to $4,900 in state grants, and 10-16 year ROI with 25 year warranty
• +1 more outcomes

Named customers9 records

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

Eight partnerships are on record, tiered core and minor.

• Grow Solar Milwaukee-Waukesha Group Buy (Midwest Renewable Energy Association)coreStrategic or Co-development Partner · 10 April 2026Selected as installer for the Grow Solar Milwaukee-Waukesha Group Buy - a community-driven purchasing program designed to make solar more accessible and affordable. Led by the Midwest Renewable Energy Association in partnership with the City of Milwaukee, Waukesha County Green Team, Heart of the City, and a coalition of local organizations. Allows homeowners, businesses, and nonprofits to pool buying power for streamlined process and meaningful cost savings.
• Renew WisconsinminorOthersOrganization advocating for renewable energy in Wisconsin. Full Spectrum Solar displays Renew Wisconsin affiliation as part of their industry credentials and trust signals.
• NABCEPminorOthersNorth American Board of Certified Energy Practitioners. Full Spectrum Solar displays NABCEP affiliation as credential indicating certified professionals.
• NARI (National Association of the Remodeling Industry)minorOthersConstruction trade association. Displayed as part of industry credentials and professional affiliations.
• MREA (Midwest Renewable Energy Association)coreTechnology or IntegrationMREA provides solar and wind education, Energy Fair, and Solar Tour programs. Partnered with for the Grow Solar Milwaukee Group Buy program.
• Legacy Solar CoopminorOthersSolar cooperative organization in Wisconsin. Displayed as part of industry affiliations and professional credentials.
• Focus on EnergyminorOthersWisconsin energy project implementation program. Full Spectrum Solar displays affiliation as partner in Wisconsin energy programs.
• Dane Buy LocalminorOthersLocally owned business directory for Dane County area. Reflects the company's local small business positioning in Madison area.

Scale indicators4 records

Recent moves5 records

Expansion highlights6 records

Broad incumbents

• Sunrun: Largest U.S. residential solar installer offering leases, PPAs, and cash purchases nationally. Comparable in residential solar core offering but at vastly greater scale with extensive marketing, financing arms, and battery partnerships.
• Tesla Energy: National residential and commercial solar and storage provider with Powerwall battery ecosystem. Comparable in PV + storage bundle offering; competes for the same Wisconsin homeowners evaluating battery backup.

Direct peers

• All Energy Solar: Upper-Midwest regional solar installer (Minnesota, Wisconsin, Iowa, Illinois) providing residential and commercial PV. Comparable in multi-state Midwest geographic strategy and residential/commercial segment mix.
• Arch Solar: Wisconsin-based solar installer focused on residential and small commercial projects. Directly comparable in geographic footprint, customer segments, and project scope (typically 5–25 kW residential systems).
• Iconic Energy: Wisconsin-headquartered solar installer offering residential, commercial, and agricultural solar systems. Most direct local competitor, serving overlapping Wisconsin counties with similar PV and battery backup offerings.
• Brightergy: Midwest-based solar developer and installer serving commercial and institutional customers. Comparable to Full Spectrum's commercial/institutional segment, particularly the F&B, healthcare, and government installations Full Spectrum has completed.
• Trinity Solar: Regional residential and commercial solar installer operating across multiple U.S. states. Directly comparable to Full Spectrum in vertical integration of sales, design, installation, and service, and in the multi-state regional rollout model Full Spectrum could pursue.
• Everlight Solar: Multi-state residential solar installer with Midwest operations. Comparable in residential-focused GTM, in-house installation crews, and emphasis on door-to-door and referral-driven lead generation.

Others

• Enphase Energy: Solar inverter and battery platform supplier and the primary battery partner Full Spectrum designs around. Not a direct competitor, but a key enabler — Enphase's installer certification and product roadmap directly shape Full Spectrum's battery backup economics.
• SolarEdge: Solar power electronics and battery supplier listed among Full Spectrum's five supported battery/storage platforms. Adjacent ecosystem participant rather than competitor; relevant for technology and supply-chain benchmarking.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/fullspectrumsolar

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Full Spectrum Solar