BUILDING A BRIGHTER FUTURE
Solar solutions for
Residential, Commercial,
& Public Properties
Welcome to
Windfree Solar
Windfree Solar helps businesses, homeowners, and government officials design and develop thoughtful solar energy solutions. Led by a forward-thinking team of industry specialists, we are committed to building a world that is powered by safe, sustainable, and environmentally friendly energy.
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Our Services
Residential Solar
Reduce your carbon footprint, cut energy costs, and take advantage of current incentives by bringing solar power to your home.
Commercial Solar
Our commercial solutions give forward-thinking businesses the tools they need to reduce costs and play a part in a renewable future.
Municipal Solar
We provide solar solutions for municipalities, helping reduce public utility costs and promote sustainability in the community.
energy storage
Energy storage systems keep your power running, and help you take advantage of the excess electricity your solar energy system produces.
greenhouse gas emissions data
26,378
gasoline-powered passenger vehicles driven for one year
82,210
electric-powered passenger vehicles driven for one year
287,983,423
miles driven by an average gasoline-powered passenger vehicle
12,725,020
gallons of gasoline consumed
11,108,767
gallons of diesel consumed
125,619,005
pounds of coal burned
19,398
homes' electricity use for one year
13,340
homes' energy use for one year
About Us
At Windfree Solar, we believe that everyone should have the ability to harness clean, renewable energy from the sun.
A premier commercial and residential solar installer, headquartered in Chicago, Illinois, since 2009, Windfree Solar provides first-class design, development, and installation services. Beyond being a full-service solar installation company, Windfree Solar is a leading battery storage and electric vehicle charging station installer and developer.
How Solar Works
How does going solar help you reduce your monthly energy expenses? Glad you asked.
When you purchase power from a utility company, your rate changes based on the grid supply. Solar power lets you take control of your electricity use and energy efficiency – because you create your own supply. By using energy you create yourself, you can dramatically reduce (or even eliminate) your reliance on utility companies
Own Your Energy. Make an Impact
Switch Together Chicagoland
Windfree Solar is thrilled to announce its partnership with the Switch Together Chicagoland program – backed by The Midwest Renewable Energy Association and the Citizens’ Utility Board. This initiative will bring more affordable renewable energy to the Chicagoland area.
Save Money. Save The World.
We’ve been installing solar photovoltaic systems throughout the Chicagoland area for nearly fifteen years. Mission-driven and customer-focused, we’ve helped hundreds of homeowners, businesses, schools, and municipalities minimize energy expenses, reduce their carbon footprint, and build brighter futures.
See What Customers Are Saying About Windfree Solar
Frequently Asked Questions
How much does solar cost in Chicago?
Most residential solar systems in the Chicago area range from $18,000 to $35,000 before incentives. After Illinois’ Adjustable Block Program REC payment (typically $5,000–$12,000) and ComEd net metering credits, many homeowners bring their effective cost down significantly. Windfree offers $0 down financing so you can start saving immediately.
Is solar worth it in Illinois in 2026?
Yes — Illinois is actually one of the best states for solar right now. Even without the federal tax credit (which expired December 31, 2025), Illinois’ state Adjustable Block Program continues to pay homeowners for the renewable energy their panels produce. Combined with ComEd net metering and a 25+ year system life, most Chicagoland homeowners still see strong long-term returns.
How long does it take to install solar panels in Chicago?
From signed contract to live system, most Chicagoland residential projects take 6–10 weeks. That includes permitting, ComEd interconnection application, installation (typically 1–2 days), and final inspection. Windfree manages every step in-house — no waiting on subcontractors.
Does solar work in Chicago's climate?
Yes. Solar panels generate electricity from daylight, not direct sunlight or heat — so they work year-round, including through Chicago winters. In fact, cold temperatures can actually improve panel efficiency. Snow generally slides off angled panels quickly, and any temporary production loss is offset by net metering credits built up during sunnier months.
What incentives are available for solar in Illinois?
The main incentives currently available for Illinois homeowners are: the Illinois Adjustable Block Program (a lump-sum REC payment worth thousands of dollars), ComEd net metering (bill credits for excess electricity), and a state property tax exemption that keeps your taxes from rising when solar increases your home value.
How do I choose the right solar company in Chicago?
Look for a company that’s been operating in Illinois long enough to understand local permitting, ComEd requirements, and the state incentive programs. Ask whether they’re a full-service EPC (meaning they handle engineering, permits, and installation themselves) or whether they subcontract.
Windfree has been a fully licensed, certified EPC in Illinois since 2009.
Can I add battery storage to my solar system?
Yes. Windfree installs battery storage systems alongside new solar installations or as an addition to existing systems. Battery storage lets you keep the lights on during outages and store excess solar energy for use at night. We install leading battery systems including Enphase.
Want to learn more about solar energy solutions? Reach out to schedule a consultation, and to learn more about our work.