Best Solar Companies in Illinois 2026

Best solar installers in Illinois. Compare pricing, SREC incentives, and reviews for IL homeowners going solar.

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Top-Rated Solar Companies in Illinois

#1 Sunrun (4.1/5)National — Strong IL presence with comprehensive financing and incentive management.

Services: IL incentive experts, Flexible financing, Wide coverage | Best for: Strong IL presence with comprehensive financing and incentive management.

#2 StraightUp Solar (4.5/5)Local — Illinois-focused installer with exceptional reviews and SREC expertise.

Services: IL specialists, Best IL reviews, SREC experts | Best for: Illinois-focused installer with exceptional reviews and SREC expertise.

#3 Blue Raven Solar (4.1/5)National — Fast IL installations with SunPower equipment.

Services: Fast installations, SunPower panels, BluePower Plus | Best for: Fast IL installations with SunPower equipment.

#4 Tesla Solar (3.9/5)National — Competitive IL pricing with Powerwall option.

Services: Low pricing, Powerwall option, Simple ordering | Best for: Competitive IL pricing with Powerwall option.

Illinois Solar Market Overview

The Illinois solar market continues to grow as homeowners served by local utility provider take advantage of federal and state incentives.

Illinois has rapidly become a top solar market thanks to the Climate and Equitable Jobs Act, which provides generous SREC incentives. Combined with ComEd's net metering and high electricity rates, IL offers excellent solar economics.

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Frequently Asked Questions

IL solar averages $2.80-$3.40/watt. After federal ITC and IL SREC incentives, effective cost drops significantly, often to $10,000-$14,000 for a typical system.
Through the Adjustable Block Program, IL SRECs provide approximately $75 per SREC for 15 years. A typical system generates significant ongoing income beyond electricity savings.

SolarSavingsAI Research Team

Solar Energy Analysts

Our team analyzes solar incentive data from federal (DOE, IRS), state (DSIRE), and utility sources to provide accurate savings estimates. Data is reviewed quarterly and cross-referenced with NREL benchmarks.

Sources: DOE, IRS, DSIRE, NREL, EIA Updated: 2026 Full Methodology Editorial Standards