Illinois Commercial Electricity Suppliers — Compare Business Rates
Illinois has retail-choice structures for eligible commercial electricity and natural gas accounts. Utility territory, account class, ZEN serviceability and executable supplier pricing remain separate from this public market context.
Zen Energy's take: Illinois: PJM and MISO demand are both firming. Henry Hub natural gas is rising (+2.4%). Illinois's latest commercial electricity benchmark is 15.19¢/kWh for 2026-07. Illinois uses Electricity + Natural Gas context. A single regional grid signal is withheld because utility territory is required for an accurate grid mapping. Electric choice is available in ComEd, Ameren Illinois and MidAmerican territories. Natural-gas choice is available to eligible Nicor Gas, Peoples Gas and North Shore Gas customers.. Henry Hub is a wholesale natural-gas benchmark and is not a local utility tariff or executable supplier quote.. Executable supplier offers still depend on usage, utility territory, account eligibility and contract terms.. Data confidence is moderate because some applicable public-market inputs are delayed, stale or unavailable.
Opportunity: Current conditions favor continued market monitoring.
Request Supplier Pricing
Review your Illinois utility, usage and contract context to determine whether account-specific supplier pricing can be requested.
Supplier availability and executable pricing depend on utility territory, account eligibility, usage, contract requirements and current market conditions.
Electricity Choice Available
Illinois deregulated its electricity market under the Electric Service Customer Choice and Rate Relief Law (1997). Eligible commercial customers in ComEd and Ameren Illinois territories may choose a licensed Alternative Retail Electric Supplier (ARES) for the supply portion of their account.
Natural Gas Choice Available
Illinois opened its natural gas market to retail competition. Eligible commercial customers in Nicor Gas, Peoples Gas, and North Shore Gas territories may choose a licensed Alternative Gas Supplier (AGS) for the supply portion of their account.
How the Rate Review Works
A straightforward path from public market context to account-specific procurement decisions.
Understand the market
Start with current Market Monitor context and the utility reference that applies to this page.
Analyze the account
Review utility, bill, usage and contract details before treating any public benchmark as actionable for your business.
Compare qualified pricing
When the account is quote-ready, compare supplier structures, terms and pricing that actually apply to that account.
Decide and monitor
Choose the structure that fits your timing and risk preferences, then keep monitoring the market and contract window.
Frequently Asked Questions
- Is Illinois a deregulated energy state?
- Yes. Illinois deregulated its electricity market in 1997. Eligible commercial customers in ComEd and Ameren Illinois territories may choose a licensed Alternative Retail Electric Supplier (ARES) for the supply portion of their electricity account.
- How does commercial electricity choice work in Illinois?
- In Illinois, your utility continues to deliver electricity and handle billing. You may choose a licensed ARES to supply the generation portion of your bill at a negotiated rate instead of paying the utility's default tariff rate.
- Which utilities serve commercial customers in Illinois?
- ComEd (Commonwealth Edison, a subsidiary of Exelon) serves northern Illinois including Chicago and the surrounding metropolitan area. Ameren Illinois serves central and southern Illinois including Springfield, Peoria, and the Metro East region.
- Which ISO/RTO governs Illinois electricity markets?
- Illinois spans two wholesale electricity markets. ComEd territory — northern Illinois including Chicago — operates within PJM Interconnection. Ameren Illinois territory — central and southern Illinois — operates within MISO (Midcontinent Independent System Operator). Market context and pricing signals differ between the two territories.
- Can Illinois businesses lock in a fixed electricity rate?
- Yes. Fixed-rate contracts are available from licensed ARES providers in Illinois. Fixed rates provide price certainty over a defined term; variable and indexed structures are also available.
Related Resources
Ready to review Illinois energy options?
ZEN will use your account details to determine which supplier pricing and contract structures can be reviewed for your business.