Find the top solar companies in Illinois offering installation services for residential, commercial, and utility-scale projects.

<aside> 💡 Disclaimer: Please note that this information is based on the latest available data and may have changed. For the most accurate and up-to-date information, we recommend contacting the company directly or visiting their official website.


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<aside> <img src="/icons/notification_orange.svg" alt="/icons/notification_orange.svg" width="40px" /> Founded by an unbiased team of solar experts with deep roots in the industry, it is our ambition to take the mystery out of solar technology for homeowners coast to coast.

Nerd.solar was born to be far more than a review website; we are your ultimate resource for making informed and unbiased decisions when going solar.

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Table of contents

Illinois solar companies provide a wide range of services, including solar panel installation on residential and commercial premises as well as large-scale utility efforts. In addition to providing clean, renewable energy, they support the state's economy by generating jobs.

According to the Solar Energy Industries Association (SEIA), Illinois currently ranks 15th in the U.S. for solar installations. Illinois now has 2,201 megawatts (MW) of solar energy installed, enough to power 375,593 homes.

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Source: https://ilsolarmap.com/

Illinois's commitment to renewable energy is remarkable. The state has set a goal that by 2025, 25% of its electricity will come from renewable sources. This ambitious target has been a major driving force for the growth of the solar industry, creating a supportive environment for solar power companies to thrive.

And it's already having an impact. We're seeing a significant increase in solar installations across the state. And the future looks even brighter, with predictions indicating an impressive 1,700% increase in solar energy installations in Illinois over the next five years. This projected growth highlights the strength and potential of the solar industry in Illinois, solidifying the state's position as a renewable energy leader.

Here is the full list of the best solar companies in Illinois we will be analyzing:

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Importance of Choosing the Right Solar Company

Making the switch to solar energy is an important choice that will likely have a big influence on how well your renewable energy project goes. Solar energy is now the renewable energy source that is growing the fastest, with a 50% increase in capacity added in 2023.

This case study emphasizes how important it is to choose Illinois solar installers wisely. Your budget and energy needs should be taken into account when selecting the perfect solar system, and the right company should help you at every step of the way.

When choosing a potential solar contractor, take into account their track record, quality of work, and methods of providing customer support. The need to be cautious throughout the choosing process has risen in Illinois due to the expanding number of solar energy providers.

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A great solar company will do more than just finish the installation. With continuous maintenance and support, they'll make sure your system is always performing at its best. This is particularly important as solar panels only last 25 to 30 years.