Best Electricity Plans in Illinois 2026: Chicago and Suburbs Guide to Deregulated Energy

Shopping for the best Illinois electricity plans can save you money through the state’s deregulated energy market. Here’s everything you need to know to compare and switch suppliers in 2026.

Looking for the best Illinois electricity plans? Illinois has had a deregulated electricity market since 1997, yet the majority of Illinois residents — including most of Chicago — remain on their utility’s default supply rate. For ComEd customers in the Chicago metro and Ameren customers in central and southern Illinois, this often means paying more per kWh than necessary. The good news: shopping for an alternative electricity supplier in Illinois is straightforward, fast, and can translate to meaningful savings on your monthly energy bill.

This guide covers the best Illinois electricity plans and suppliers in 2026, how deregulation works in the ComEd and Ameren territories, and how to make the switch.

Comparing Illinois Electricity Plans: How to Find the Best Rate

When evaluating illinois electricity plans, Illinois residents should compare fixed vs. variable rates, contract length, and supplier reputation. The Illinois Commerce Commission (ICC) regulates energy suppliers and provides consumer resources to help shoppers compare rates.

How Illinois Energy Deregulation Works

Illinois electricity deregulation operates through the Illinois Commerce Commission (ICC). Your local utility — either ComEd (northern Illinois, including Chicago and suburbs) or Ameren Illinois (central and southern Illinois) — continues to own and operate the power lines, handle outages, and deliver electricity to your home. What you can shop is the “supply” portion of your bill — the charge for the electricity generation itself.

Alternative Retail Electric Suppliers (ARES) are licensed by the ICC to sell electricity supply in Illinois. When you choose an ARES, they arrange for electricity generation on your behalf and typically lock in a fixed rate for the contract term. Your utility still delivers it, bills you, and handles all service issues.

Top Electricity Suppliers in Illinois for 2026

1. Constellation Energy

Constellation is one of the most established ARES providers in Illinois with strong coverage across both ComEd and Ameren territories. They offer fixed-rate plans in multiple term lengths (6, 12, and 24 months), green energy options, and a strong online account management experience. Constellation is a top-rated option for Illinois households looking for stability and a reputable supplier.

2. Direct Energy

Direct Energy competes aggressively in the ComEd territory and frequently offers some of the lowest fixed rates available in the Chicago market. They offer multiple term options and have a solid customer service track record. Watch for introductory pricing — confirm the rate applies for the full contract term before enrolling.

3. Spark Energy

Spark Energy is available across ComEd territory and offers straightforward fixed-rate plans without excessive fees or complicated bill-credit structures. They’re a solid no-frills choice for Chicago-area households looking to beat ComEd’s default supply rate with a competitive fixed plan.

4. Homefield Energy

Homefield Energy is an Illinois-based ARES that focuses on the residential market and has built a strong reputation for customer service within the state. Their offerings include fixed-rate plans and green energy options, and their local focus means better knowledge of the ComEd and Ameren markets specifically.

5. Verde Energy

For Illinois residents interested in renewable electricity, Verde Energy offers 100% green plans at competitive rates in the ComEd territory. Illinois has strong renewable energy goals and green electricity is increasingly popular in the Chicago market, where several ARES providers compete on renewable offerings.

ComEd vs. Alternative Supplier: Understanding the Rate Difference

ComEd sets a “Hourly Pricing” or “Fixed Supply” default rate for customers who don’t choose an ARES. The ComEd supply rate changes periodically and is set through a competitive procurement process by the Illinois Power Agency (IPA). The key question is whether an ARES fixed rate in the current market is lower than ComEd’s default supply rate — and in many periods, it is.

In 2026, Illinois average residential electricity rates are in the range of 13–16 cents/kWh total. The supply portion (the shoppable piece) typically represents approximately 40–50% of the total bill. If you can reduce the supply rate by even 1–2 cents/kWh, that’s meaningful savings over a 12-month contract for an average household using 700–900 kWh per month.

Chicago-Specific Tips for Electricity Shopping

Chicago is in the ComEd service territory, which is the largest and most competitive part of the Illinois electricity market. A few things Chicago residents should know:

• Apartment residents can switch too — If your electricity is in your name (not bundled into rent), you can choose your own ARES supplier regardless of whether you’re a renter.
• Watch for door-to-door solicitation — Chicago has seen aggressive ARES marketing at the door. Never sign up at the door without reviewing the contract and the rate independently first. Legitimate suppliers are happy to give you time to decide.
• Read the contract term carefully — Know whether you’re signing for 6, 12, or 24 months and what the early termination fee is if you move.
• Check the Illinois Commerce Commission’s website — The ICC maintains a supplier list and consumer protection information at icc.illinois.gov.

Natural Gas Deregulation in Illinois

Illinois is also deregulated for natural gas in the Nicor Gas and Peoples Gas service territories (both serving the greater Chicago area). If you heat your home with gas — which most Illinois homes do — you can also shop for a gas supplier separately. Companies like Constellation, Integrys Energy, and XOOM Energy offer natural gas supply plans in Illinois, and locking in a fixed gas rate before winter can provide significant protection against price spikes during cold snaps.

Bundle Internet with Your Illinois Energy Switch

The Chicago metro has one of the most competitive internet markets in the Midwest, making it a great time to compare both services. Major ISPs competing in Chicago include:

• Xfinity (Comcast): Dominant cable provider across most of Chicago and suburbs, with plans from 75 Mbps to multi-gigabit.
• AT&T Fiber: Expanding in Chicago with symmetrical fiber plans, strong in areas like Wicker Park, Logan Square, Lincoln Park, and northern suburbs.
• RCN (now Astound): Competitive cable and fiber option in select Chicago neighborhoods — often priced aggressively against Xfinity.
• T-Mobile Home Internet: Growing 5G-based option with no contract and flat pricing across Chicago.

Home security is also worth considering — Vivint operates in Chicago and across Illinois, and their smart home packages with energy monitoring can help you optimize consumption alongside your new lower electricity rate.

How to Switch Electricity Suppliers in Illinois

1. Review your current ComEd or Ameren bill to find your current supply rate and check if you’re already with an ARES or on the utility’s default.
2. Compare ARES offers using a marketplace or the IPA’s Approved Retail Electric Suppliers list.
3. Review the contract terms — rate, term, ETF, and whether the rate is introductory.
4. Enroll online — provide your utility account number, service address, and contact info.
5. Your utility handles the switch — no service interruption, switch takes 1–2 billing cycles.

How to Choose the Best Illinois Electricity Plans

Finding the right Illinois electricity plans involves comparing multiple factors. The best Illinois electricity plans for your home depend on your usage patterns, whether you prefer fixed or variable rates, and how long you plan to stay at your address. Most licensed suppliers in Illinois offer transparent rate structures through comparison platforms, making it easy to evaluate your options before switching.

Frequently Asked Questions About Illinois Electricity Plans

What are Illinois electricity plans? Illinois electricity plans are supply contracts offered by Alternative Retail Electric Suppliers (ARES) licensed by the Illinois Commerce Commission. These plans compete with ComEd and Ameren’s default utility supply rate.

Are Illinois electricity plans safe? Yes, all Illinois electricity plans offered by licensed suppliers are regulated by the ICC. Delivery of electricity through ComEd or Ameren infrastructure remains unchanged — only the supply contract changes.

Can I cancel Illinois electricity plans? Most Illinois electricity plans allow cancellation, though some fixed-rate contracts may include early termination fees. Always review your contract terms before enrolling.

Bottom Line

Illinois has a mature deregulated electricity market with strong competition — especially in the ComEd/Chicago territory. Whether you’re in a Chicago high-rise or a suburban single-family home, you have the right to shop your electricity supply and lock in a rate that beats the utility default. With winter heating costs already high, securing a competitive supply rate is one of the best steps Illinois households can take to manage their total energy spend.

Compare licensed ARES electricity rates for your Illinois address at Utility Search Marketplace and find out how much you can save with a simple switch.