Independent Wisconsin solar experts since 2002
Wisconsin solar, designed for the long haul.
One local team for thoughtful design, direct pricing, certified electrical work, and support that continues long after installation.
- No commissioned salespeople
- Dedicated project manager
- In-house service department
Start with what you need
Generate and use your own energy.
Solar Electric
Residential, rural, nonprofit, and commercial systems designed around your site and energy goals.
Explore solar → 02 / PROTECTHome Battery Backup
Whole-home and partial-home backup configurations with practical load planning and equipment comparison.
Compare batteries → 03 / CHARGEEV Charging
Convenient home charging coordinated with your electrical service, solar, and future energy needs.
Plan EV charging → 04 / ELECTRIFYHeat Pump Water Heaters
Efficient water heating that pairs naturally with solar and can reduce household energy use.
See how it works → 05 / SUPPORTMaintenance & Repair
Long-term system support, troubleshooting, monitoring restoration, and repair for existing arrays.
Request service → 06 / RESTORERoofing & Storm Damage
Experienced solar removal, storage, redesign, and reinstallation coordinated with roofing work.
Review roofing services →Local experience, accountable service
Designed to earn trust before the contract—and keep it afterward.
Founded in Madison by brothers and UW–Madison mechanical engineering alumni Burke and Mark, Full Spectrum Solar has spent 24 years building a company around good work, honest guidance, and lasting customer relationships.
- Direct pricing and practical system recommendations
- Certified master electricians and experienced installers
- An accredited project manager dedicated to each project
- A post-installation service department you can call
What happens next
A clear process, managed by one accountable team.
Listen & assess
We start with your goals, utility use, property, budget, and the questions that matter to you.
Design & explain
Your proposal connects system design, expected production, equipment, incentives, and tradeoffs in plain language.
Coordinate & install
Our team manages engineering, permits, utility coordination, scheduling, installation, and inspection.
Monitor & support
After permission to operate, monitoring and our service department help protect the long-term value of your system.
One team. One clear point of accountability. Your dedicated project manager keeps every handoff moving from agreement through activation.
Start a ConversationA regional track record
Every dot represents a relationship.
Our work is concentrated around Madison and southeastern Wisconsin, with installations serving homeowners, farms, businesses, nonprofits, and community organizations throughout the region.
- 24 years of solar experience
- Industry-leading warranty coverage
- North American product options
- Smartphone system monitoring
See our work
Built for Wisconsin homes, farms, and organizations.
Verified customer feedback
Wisconsin customers say it best.
Recent Google reviews highlight the things that matter after the proposal: clear communication, respectful crews, thoughtful problem-solving, and service that continues after installation.
“Our installation was excellent and all billing was transparent.”
“The system came in on time and on budget.”
“Each step was intentional, thoughtful, and professional.”
Start with a useful estimate
What might solar look like for your home?
Explore a planning estimate without surrendering your contact information. A site-specific consultation will account for roof layout, shade, utility rules, equipment, and incentives.
Get a Site-Specific ProposalStraight answers from the field
Resources for making a better-informed decision.
Questions worth asking
Clear answers before you commit.
A good solar decision should hold up under questions about cost, production, backup power, scheduling, and long-term service.
Visit the Full FAQHow do I know whether solar is a good fit for my property?
We review your electricity use, available roof or ground space, orientation, shade, electrical equipment, utility rules, and financial goals. The answer may be a conventional array, a different layout, a smaller project, or an honest recommendation to wait.
Will solar keep my home powered during an outage?
A standard grid-connected solar system shuts down during an outage for utility-worker safety. Battery backup can keep selected circuits—or, when properly designed, a larger portion of the home—powered within the system’s energy and output limits.
Can a battery be added to an existing solar system?
Often, yes. The best approach depends on the existing inverter, electrical service, available installation space, utility requirements, and which loads you want to protect. We model those tradeoffs before recommending equipment.
Who handles permits, utility applications, and inspections?
Full Spectrum Solar coordinates project engineering, permitting, utility interconnection, scheduling, installation, inspection, and permission to operate. Your project manager keeps those handoffs organized and communicates what comes next.
Do you service solar systems installed by other companies?
Our service department evaluates maintenance, repair, troubleshooting, and monitoring issues for existing systems. Equipment age, manufacturer support, and replacement-part availability may affect the practical repair path.
Can I install EV charging or a heat pump water heater without solar?
Yes. These upgrades can be evaluated as stand-alone projects or coordinated with solar, battery backup, and electrical-service planning.
A clear next step
Let’s find out whether solar is a good fit.
Talk directly with a local team focused on the system—not the sale.