PROFESSIONAL. MODERN. LOCAL. SOLAR.

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4.8 / 5.0 on Google

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4.8 / 5.0 on SolarReviews

Certasun is the leading solar installation company in Chicago and northern Illinois. We specialize in residential solar panels, home battery storage, and EV charger installations—always with integrity, professionalism, and top-rated service.

8

Years in Business

3000+

Solar Projects

Why is Certasun The Best Solar Company in Illinois?

A great customer experience

Our reviews speak for themselves. At Certasun, we respect your time, your home, and your trust—delivering solar with honesty and care.

Everything done in-house

From consultation to installation to incentive processing, our expert solar team handles every step. No subcontractors. No excuses. Just accountability and quality.

Guaranteed solar performance

We guarantee the energy production of your system over its lifetime. We also guarantee you’ll get the incentives you see in your installation agreement.

Beautiful, professional installations

Not all solar installations are created equal. Our Illinois solar experts design and install systems that are clean, modern, and seamless on your home.

Flexible payment options

We’ll guide you through solar financing options—purchase, loan, or lease—and help you choose what fits your budget best, without sales pressure.

INTRODUCING

Prio™ Prepaid Solar Service

Discover a smarter, simpler way to switch to solar energy with Prio, Certasun’s prepaid solar service. Prio is our response to changing federal solar incentives and is available now to ComEd customers in northern Illinois.

Learn About Prio

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“Certasun is absolutely the solar company you want to use…one of those extremely rare companies where you actually feel good working with them and like they have your best interests in mind.”

CHRIS D., GLEN ELLYN, ILLINOIS

“The solar panels were much better looking and less obvious than I thought they would be. Excellent communication and perfect workmanship are what you want when spending alot of money for a product so important as solar panels. Certasun passed with flying colors.”

MARY O., WESTMONT, ILLINOIS

“The reason I picked Certasun was trust. I am a lawyer and I looked at their contract. It was clean, it was fair, and it was laid out well. Working with Certasun gave me peace of mind.”

MATT G., CHICAGO

“Their knowledge, efficiency, communication, and commitment to excellence are unparalleled. Going solar with Certasun was one of the best decisions I’ve made for my home.”

WILLIAM I., SYCAMORE, ILLINOIS

“I could tell which ones were done by Certasun and which ones were done by other folks. If you are looking for something that looks like it was built with the house, then definitely go with Certasun.”

DARYL D., NAPERVILLE, ILLINOIS

solar panels in Hawthorn Woods, Illinois

“Every aspect of working with the Certasun pros was fantastic. And now we have a $14/month electric bill. What a dream! And our panels look great! I’m SO glad we went solar!”

JOY M., NILES, ILLINOIS

Your Solar Questions, Answered

Why should I choose solar energy for my home in Chicago?

Solar panels lower your electricity bills, increase your home’s value, and help you generate clean, renewable energy, even during Chicago winters. Choosing solar is one of the most reliable ways to protect yourself from rising utility costs while reducing your carbon footprint. Read more about solar benefits.

How much do solar panels cost in Chicago?

The cost of solar depends on system size, equipment, energy usage, and financing. Certasun provides free quotes so you can see your exact investment and potential savings. Learn more.

Is my house good for solar?

Whether or not your home is suitable for solar panels depends a number of factors. First, you need to be the owner of the home, not a renter. Second, you need enough electricity demand to justify the fixed expense. As a rough guide, if your current electricity bill averages more than $100 per month, you are a good fit. Third, the size, slope, and orientation of your roof—as well as the amount of shade—play a part. If your roof is in deep shade most of the day, rooftop solar will not be a good fit. Finally, if your roof is old and will need to be replaced in the next few years, we’d recommend doing that before you install solar.

How long does it take to install solar panels?

Most projects in Illinois take about 90 days from contract to installation, though it can range from 30–150 days depending on permitting, utility approvals, and seasonal demand. Certasun manages the entire process to keep your project on track. Read more about the process of going solar.

Are there incentives for solar in Illinois?

Yes! Illinois offers one of the country’s most generous state solar incentives, making solar a great deal in the Chicago area. When you purchase your solar system, you claim the Illinois incentive directly, and if you lease, you’ll receive the benefit in the form of a lower lease payment.

Will the government pay me to go solar?

If you’ve seen advertisements saying that the government will “pay you to go solar”, be careful. While it is true that there are significant incentives for solar, it is almost never the case that they cover 100% (or more) of the cost, which is what most people would understand “pay you to go solar” to mean. You should also watch out for companies that say can go solar for free. It is true that you can finance solar—in which case you may well have zero up-front cost—but you will also have monthly payments. Is a car you lease “free”? Of course not. More questions about financing solar?

Do solar panels work with batteries?

Yes. Certasun installs home battery systems from Tesla and FranklinWH. Batteries store extra solar power so you can use it at night or during outages. Read more about adding a battery to your solar system.

Going Solar Is As Easy as one, two, three!

Reserve a Free, Online Consultation

Fill out the form below to speak with an expert at a time that is convenient for you.

Before your consultation, we’ll build a 3D model of your home and generate a solar energy production estimate.

Review Options

During your consultation, we’ll discuss your layout and equipment choices. We’ll give you a quote and explain how incentives reduce your net cost.

Finally, we’ll talk about financing options—including some with zero out-of-pocket expense.

Installation

After you decide to move forward, we’ll take detailed measurements at your home, produce engineering drawings, secure incentives and permits, and order equipment.

Expect installation to be about three months after you sign up. Installation itself usually takes one or two days.

Schedule A Free Consultation

During the consultation we’ll create your custom design and quote.

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Not quite ready? Call (312) 638-0800 with any questions!