
Illinois Goes Solar with SunPower®

The State of Solar Panels in Illinois
Illinois averages about 198 sunny days each year, slightly below the national average of 205.* With steady sunshine and growing clean‑energy goals, solar panels have become an important part of Illinois’ renewable future. The state’s renewable portfolio standard calls for 25% of its electricity from clean sources by 2025.* With more than 48,000 solar installations and $1.4 billion invested in solar, Illinois has firmly committed to expanding solar adoption.

Save by Going Solar

How Much Solar Energy Does Illinois Produce?
By early 2021, Illinois had installed about 618 MW of solar capacity, ranking 23rd nationally.* This level of solar generation is enough to power an estimated 89,000 homes and shows steady momentum in residential and commercial solar installation across the state.
What Are the Advantages of Solar Panel Installation in Illinois?
Home solar panels in Illinois can lead to substantial long‑term financial benefits. Homeowners may save between $24,000 and $33,000 over 20 years after going solar.* The typical payback period ranges from about 6.7 to 9.1 years, depending on system size, electricity usage, and local rates.
Solar also contributes to workforce growth. As of 2020, the solar industry supported more than 5,200 jobs across Illinois.* Since then, thousands more have been added through expanded installation, manufacturing, and support services.
What is the Cost of Solar Panels in Illinois?

How Much Does Solar Cost in Illinois?
The cost of a solar system depends on factors like weather, roof angle, available roof space, and equipment quality. Based on SunPower quotes and national third‑party data, the cost of a 5 kW system in Illinois typically ranges from $12,950 to $23,150, or about $2.59 to $4.63 per watt before incentives.
Illinois offers several programs to help lower the cost of going solar. The Illinois Solar for All program helps income‑eligible homeowners install solar with little or no upfront cost.* Illinois also offers net metering, which lets homeowners receive bill credits for excess solar power returned to the grid. Policies vary by utility and may change, so checking dsireusa.org for current details is recommended.
Additional tax incentives help reduce long‑term costs. For example, the Special Assessment for Solar Energy Systems prevents property tax increases that would otherwise occur when a solar installation adds value to a home. Illinois residents may also benefit from the 30% federal Investment Tax Credit, subject to IRS rules.
Tax credits and incentives can change over time. Visit dsireusa.org for updates.

Own Your Solar System with Easy Solar Financing

What’s the Best Way to Go Solar in Illinois?
To get the most from a solar installation, it’s important to work with a trusted provider who can design a system that fits your home, energy needs, and budget. A qualified installer can help you understand available incentives, financing options, and local utility programs while ensuring your system performs reliably for years to come.
If you’re ready to explore solar for your home, request a free SunPower consultation below. We’ll follow up with a quick call to schedule your appointment. You can also reach us directly at 1‑385‑489‑5552.
*Federal and state tax incentives and utility programs may change. SunPower does not provide tax advice. Consult a tax professional for guidance.*
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