Is Solar Worth It in Illinois? (2022 Homeowner's Guide)

Here’s a quick overview of solar viability in Illinois:

  • Illinois ranks 21st in the country for solar installations.*
  • The average electricity rate in Illinois is 13.04 cents per kilowatt-hour.**
  • The average solar payback period in Illinois is 12 years.***
  • Homeowners are eligible for the Illinois Shines SREC Program and the federal solar tax credit
  • The average homeowner saves $16,585 over the lifetime of their solar system in Illinois.***

*According to the Solar Energy Industries Association.
**Data from the Energy Information Administration.
***Calculated assuming the system is purchased in cash.

Ecowatch Author Dan Simms

By Dan Simms, Solar Expert

Updated 9/19/2022

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Our solar experts have conducted hours of research and collected dozens of data points to determine whether solar is a good fit for homeowners in each state. We’ve also unbiasedly ranked and reviewed hundreds of solar installers to empower you to make the right choice for your home.

Is Illinois Good for Solar Energy?

In this article, we’ll discuss whether solar is worth it for the majority of Illinois homeowners, but whether solar panels are worth it will ultimately depend on your home’s configuration and your energy needs. To speak with an EcoWatch-vetted professional who can help you determine whether solar is worth it for your Illinois home, follow the links below.

Jump to Section:

  1. Figure Out if Solar Panels are Worth It in Illinois
  2. Benefits of Solar Energy in Illinois
  3. What to Look Out For When Considering Solar in Illinois
  4. Is Solar Worth it in Illinois?
  5. Frequently Asked Questions


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Illinois is currently ranked 21st in the country for solar friendliness and adoption of this renewable energy source.1 Overall, going solar is worth it for most homeowners in the area, and the rapid growth of solar in IL will only increase the likelihood that you’ll save money by converting to clean energy. Most Illinois residents pay around $20,475 for solar panels before any incentives, and the average homeowner saves approximately $16,585 after the system pays for itself. Installation expenses are lower than the national average, and the average electricity rate in the region makes solar adoption a great investment for most Illinoisans.2

How to Figure Out if Solar Panels are Worth It in Illinois

While a properly sized solar panel system will save most homeowners in IL money, that doesn’t mean it’s necessarily right for your home. Deciding if going solar is a good investment for you will depend on several factors, which we’ll discuss below.

What’s Your Home Electricity Consumption?

Solar energy systems are sized based on your average monthly energy needs to ensure that the panels will produce enough power to offset the price of electricity. Generally speaking, solar panels are really only worth it for homeowners who use at least 500 kilowatt-hours every month, on average. Most homes in Illinois consume around 721 kWh, making solar a good option for most residents. However, if you have energy needs that are well below average, you might want to rethink installing solar panels or at least understand that your return on investment will be lower over time. You can determine your monthly energy consumption by checking your past electric bills for your consumption history.

How Much Is It To Go Solar in Illinois?

The price to install solar panels in Illinois depends on several factors, including your monthly energy needs, the size and efficiency of your home, the direction your roof faces, shading on your property and more. The average home in Illinois requires a 7.5-kilowatt system, which is much smaller than the average in the country. At a local average per-watt price of $2.73, that’s a typical total of $20,475. While this might seem like a lot, it’s about $10,000 lower than the national average. Solar panels provide more value when electricity rates are high. Illinois residents pay around 13.04 cents per kilowatt-hour, which is just below the national average rate. Given the low price of solar equipment and the average energy rates, many homeowners in the area will find that solar is a worthwhile investment.

What’s the Payback Period for Solar in Illinois?

two men checking if solar panels are installed correctly If you buy or finance your solar panels, the likelihood is that they will pay themselves off well within their lifespan. The time it takes for you to pay off your solar panels and start enjoying savings is called the solar panel payback period. In Illinois, the average payback period is around 12 years, with most residents falling between 9 and 15 years. This is right in line with the national average. If you use a solar calculator and find that your payback period is estimated at more than 15 years, solar might still save you money in the long run, but it will take you longer than average to see a return on your investment. Still, given the average lifespan of panels is at least 25 years, the chances are good that you’ll still enjoy savings over time.

What Are Average Buy-Back Rates in Illinois?

Many states have mandated net metering policies, which require local utility companies to purchase any energy your panels produce above and beyond what your home uses. Through interconnection, you can route energy you don’t use to the grid and get compensated for it, usually to offset any energy you pull from the grid when your panels underproduce — like at night or on cloudy days. Illinois has an excellent net metering program that requires electricity providers to buy back overproduction at the full retail rate, which means you’ll be compensated for excess energy at the same price you pay for incoming energy. This policy makes solar panels far more valuable in Illinois, increasing the return on investment you’ll likely see over the lifespan of your solar energy system.

How Much Sun Does Your Roof Receive?

Solar panels will only produce energy when they’re exposed to direct sunlight. Illinois receives an average of 198 sunny days per year, which is just below the national average of 205 days. While the state as a whole receives enough sunlight to make solar worth it, there are a few individual factors that you should consider before deciding if solar is right for you. For example, any shading on your roof will make your system less efficient and reduce your expected return on investment. Similarly, roofs that aren’t angled toward the sun’s path in the sky will be less efficient overall. South-facing and west-facing roofs are best, and those that face north and east will likely not be right for solar panel installation. You can check with a reputable solar installer in your area if you’re unsure if your roof receives enough sunlight to make solar worth it.

What’s the Outlook on Solar in Illinois?

Illinois’ Renewable Portfolio Standard (RPS) goals have made solar panel systems quite popular throughout the state, with residential solar installations quadrupling since 2019.3 Community solar and commercial solar installations have also increased over the past few years. The industry in Illinois is only expected to grow, with a projected growth of 1,700% in the next five years. There has never been a better time to go solar in IL.

Benefits of Solar Energy in Illinois

Given that the average expense to install solar panels in Illinois is just over $20,000 — before the federal solar tax credit — many homeowners will understandably want to know what benefits they’ll enjoy and how their investment will deliver a return over time. Below, we’ll discuss all of the upsides to installing solar panels in the area.

Electricity Bill Savings

Most importantly, solar panels will generally help you reduce or even eliminate your electric bills. With the average Illinoisan paying around $93.98 per month for electricity, that’s a potential annual savings of $1,127.76 every year your solar panels produce energy.4 The typical Illinois homeowner will experience a reduction in energy bills that pays back the system expense in around 12 years on average, after which the reduced energy rates will just be savings. These savings will only increase going forward, as electricity rates have only gone up over the past decade and are expected to continue to increase. Going solar helps you lock in your per-kWh rate for around 25 years or more, which can help with long-term budgeting.

Lower Taxes & Access to Other Incentives

The federal and state governments provide solar incentives for Illinois homeowners to push them to adopt solar energy. For example, the federal solar investment tax credit (ITC) provides a credit to your federal income tax liability in the amount of 30% of your system expense.5 In Illinois, the average credit is $6,143, bringing the effective total for solar down from $20,475 to $14,332. Homeowners in the area also have access to solar renewable energy credits (SRECs), which you can accrue for every 1,000 kWh your panels produce. You can then sell the SRECs you earn for an average of $70 each in Illinois. Below are some additional state incentives:

  • Illinois Solar for All Program: Incentive for low-income households to go solar
  • Net metering: Helps offset energy fees with overproduction
  • Solar Property Tax Exemption: Prevents property taxes from increasing following solar conversion
  • ComEd Solar Rebate: $250/kWh rebate for ComEd commercial customers

Home Resale Value Increase

Many homeowners don’t realize that installing solar panels boosts home value. According to data from Zillow, the average property value will increase by around 4.1% after solar conversion.6 In Illinois, where home value averages approximately $252,404 at the time of publication, that comes out to a typical value bump of $10,349.7 With an average system investment of $15,152 after the ITC, the increased home value reduces the effective expense of going solar by around 66%. It’s important to note that this value increase is only expected for solar customers who use a cash purchase or solar loan to acquire their panels. Solar leases and power purchase agreements (PPAs) will not cause home value to go up.

Clean, Renewable Energy

Of course, homeowners who care about the environment will also benefit from reducing their carbon footprint and their negative effect on the world around them. Installing solar not only lets you tap into clean energy, but it also helps you become less dependent on your utility company and fossil fuels as a whole. You’ll be able to reduce air and water pollution and help fight climate change, all while enjoying lower energy fees.

What to Look Out For When Considering Solar in Illinois

When deciding whether solar panels are right for your Illinois home, there are a number of things you should consider. We’ll discuss some crucial information below that will help you make the right choice, have the best installation experience possible and plan for your future in clean energy.

Upfront Fees

solar panels on a house roof during a sunny day The upfront fees of solar panels will always be important for all homeowners, especially since solar panels routinely require an investment of tens of thousands of dollars. It’s wise to consider how the total for your system fits within your budget, how you’ll pay for the equipment and labor, and whether the long-term savings make the large upfront fees worth it for you.

Payback Period

As mentioned above, the average Illinois homeowner will find that their panels pay for themselves within about 12 years, or anywhere between 9 and 15 years, depending on some individual factors. If your estimated payback period is higher than 15 years, solar will likely still save you money, but you should go into the conversion process knowing that it will take you longer to recoup your money. Your return on investment overall will also be a bit lower than average.

Net Metering Policies in Illinois

Illinois mandates net metering, and the state requires all local utility companies to buy back excess energy you produce at the full retail rate. This is great news for IL homeowners, as it helps offset and eliminate electric bills. Still, policies are subject to change and vary between electric companies, so be sure to check the policy that applies to you.

Pending Policies & Changes to Incentives

Just like net metering policies can change, so can solar tax incentives and other programs mentioned above. The solar industry is rapidly advancing, so additional incentives could be put in place by the time you’re ready to commit to solar. It’s best to do your research beforehand so that you know exactly what incentives, rebate programs and other benefits are available to you.

Weather & Climate in Illinois

Solar panels work best in areas with intense and direct sunlight, which typically means that states near the equator are best suited for solar installations. However, northern states like Illinois can still benefit from solar conversion, especially for homes with south- and west-facing roofs. Some homeowners in Illinois worry that their panels won’t produce sufficient energy during the cold winters or when thunderstorms, rain and cloudy days reduce the available sunlight. In reality, electricity flows more quickly in the cold, which means efficiency won’t be terribly reduced in the winter. Rain will naturally reduce efficiency, but it can also clean dirt and debris off of your panels that obstruct sunlight, ultimately keeping your panels clean and maximizing energy production when it’s sunny.

Companies Pushing Solar Leases or PPAs

Finally, you should be on the lookout for companies pushing solar leases, power purchase agreements (PPAs) or “free panels,” which are never really free. With solar financing options being more plentiful and accessible than ever before, solar leases are not a great option anymore. Leases don’t increase your home value, take much longer to pay off (if you can pay them off), provide a lower ROI overall, and don’t let you take advantage of the ITC and other solar incentives. You should also be on the lookout for disingenuous solar companies, which will undoubtedly pop up in Illinois with the surge in demand. Recently, ComEd and the BBB worked together to inform Chicago homeowners of solar scam companies that were going door to door offering free panels, claiming affiliation with local energy companies, and committing burglary, identity theft and other crimes. You should only agree to work or speak with reputable solar installers in your area and always be on the lookout for potential scams.

Wrap Up: Is Solar Worth it in Illinois?

Given the average solar panel payback period of 12 years in Illinois, the below-average price of solar equipment and the average price of electricity in the state, most homeowners in the area will find that converting to solar is a sound investment. However, it’s not ideal for everyone. You’ll need to consider many factors to decide if solar is right for you, including your monthly energy consumption, shading on your property, the direction your roof faces and much more. Thankfully, a quick conversation with a solar installer can help you determine if solar is likely to provide you with a good return on investment. You can even factor in your estimated interest rate and upfront fees, plus the total price of going solar, which you can get from a reputable solar installer in your area. We strongly recommend starting your decision-making process by contacting a vetted Illinois solar panel installation company.

See also: Calculate the costs and savings you can get from installing solar panels

Read More About Going Solar

Frequently Asked Questions

The EcoWatch team gets lots of questions from Illinois homeowners about the process and benefits of going solar. Below are some of the questions we see most often from homeowners in your area. If you have specific questions that aren’t answered here, reach out to our team of solar experts at

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Dan Simms

Solar Expert

Dan Simms is an experienced writer with a passion for renewable energy. As a solar and EV advocate, much of his work has focused on the potential of solar power and deregulated energy, but he also writes on related topics, like real estate and economics. In his free time — when he's not checking his own home's solar production — he enjoys outdoor activities like hiking, mountain biking, skiing and rock climbing.