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Natural Gas

Comparing Nicor Gas Rates: How to Choose the Best Alternative Supplier in Illinois

Learn how to navigate the Nicor Gas Customer Select program, confidently compare natural gas rates, and find the most cost-effective energy plan for your home

Nicor Gas
2.3 MM
Customers
650
Communities
Illinois
Natural Gas Provider

High winter heating bills can hit hard in northern Illinois, especially if you’re not sure what part of your Nicor Gas bill you can actually control. This guide explains how the Nicor Gas Customer Select program works, how to compare supplier offers, and what contract details to check before you switch.

Exploring the Nicor Gas Coverage Area in Illinois

Before you compare supplier rates, confirm that your home is in Nicor Gas territory. The coverage network extends across most of the northern third of the state, excluding the city of Chicago itself. If you’re moving within northern Illinois or switching addresses, confirm which gas utility serves your new home before comparing suppliers. The utility provides natural gas to hundreds of communities, including several major metropolitan hubs across the region.

Electric Only
Gas Only
Electric & Gas
*This map provides an approximate overview of coverage areas and is for illustrative purposes only. Exact service availability depends on physical infrastructure and cannot be guaranteed based on this map. Please contact customer support to verify service at your specific location.

Quick Fact

No matter which alternative supplier you choose, your primary utility still maintains the physical pipelines, reads your meter, and responds to gas leaks and emergencies in these areas.

Utility vs. Supplier: What Changes When You Switch

Illinois deregulation separated the physical delivery of natural gas from the supply of the actual commodity. Your utility owns the underground pipes, maintains the critical infrastructure, and delivers the gas directly to your home. Alternative Gas Suppliers, often called AGS companies in Illinois, sell the gas supply portion of your bill while Nicor Gas continues to deliver the gas. If you stick with the default utility supply, your rates will change monthly based on wholesale market costs.

Switching to a new supplier can feel daunting, but understanding the process helps you compare offers more confidently. If you choose an alternative supplier, it’s important to know exactly what does and does not change:

  • Your delivery service does not change.
  • Nicor Gas still responds to leaks and emergencies.
  • Nicor still bills you in many cases.
  • Only the gas supply portion of your bill changes.
  • Switching suppliers does not guarantee savings.

How the Nicor Gas Customer Select Program Works

Taking advantage of the open energy market requires participating in the Nicor Gas Customer Select program. This state-approved initiative allows residential customers to shop around and choose who supplies their natural gas, while still relying on the utility for safe, reliable delivery. When evaluating your options through the Nicor Gas Customer Select program, you’ll quickly notice two distinct pricing frameworks.

Fixed vs. Variable Natural Gas Rates in Illinois

One of the biggest choices is whether you want a fixed or variable natural gas rate in Illinois. A fixed-rate plan locks in your price per therm for the duration of a contract, giving you complete peace of mind when winter storms hit. Conversely, a variable-rate plan means your price per therm changes periodically based on market conditions, offering flexibility but increasing your financial risk during high-demand months. To help you decide, we broke down the main differences between the two frameworks.

Plan FeatureFixed-Rate PlansVariable-Rate Plans
Rate StabilityRate stays the same for the contract termRate fluctuates based on the open market
Contract RequirementUsually requires a contract lasting six to 36 monthsTypically operates on a month-to-month basis
Best ForLong-term budgeters seeking predictabilityShort-term renters or market watchers

Pro Tip

The supply portion can be a major part of your bill, especially during high-usage winter months. Check your recent Nicor Gas bills to see how much you’re currently paying per therm before comparing offers.

How to Compare Nicor Gas Alternative Suppliers

Comparing alternative gas suppliers takes a little research, but breaking it down step-by-step makes the process straightforward. Use this checklist to evaluate offers against your current utility supply rate:

  1. Find your current Nicor Gas supply charge or gas cost on your most recent bill.
  2. Look at the supplier’s price per therm and compare it to the utility rate.
  3. Confirm whether the advertised rate is fixed or variable.
  4. Check the contract length to ensure it aligns with your housing plans.
  5. Look for monthly administrative fees, early termination fees, and introductory-rate language.
  6. Compare the total estimated cost using your recent usage in therms.
  7. Verify that the supplier is certified by the appropriate Illinois authority.

Top Comparisons: Nicor Gas Competitors and Supplier Offers

Finding a better deal means you have to actively evaluate Nicor Gas competitors and compare their offerings side-by-side. Not all suppliers provide the same value, so you should look beyond just the baseline price per therm. When you compare natural gas rates in Illinois, factor in the contract length, customer service ratings, and whether the company offers any perks like smart home tech or renewable energy offsets. You want a provider that aligns with both your budget and your household values.

To streamline your research into Nicor Gas alternative suppliers, we highly recommend utilizing official state resources. You can review verified Illinois Commerce Commission natural gas choice comparisons to vet current offers safely. By using an objective, state-run tool, you avoid biased third-party brokers and get a clear picture of exactly what each supplier charges, helping you compare offers more confidently.

Comparison FactorWhy It MattersWhat to Look For
Price per thermDetermines your primary commodity cost.A rate competitive with the Nicor Gas supply charge.
Fixed or variable rateImpacts rate stability and market risk.Fixed rates for predictability; variable rates only if you closely monitor the market.
Contract lengthDictates how long you are locked into the agreement.Terms that match your living situation, typically ranging from six to 36 months.
Monthly feesCan quietly cancel out any potential rate savings.Plans with zero or very low monthly administrative fees.
Early termination feePenalizes you for leaving a contract early.Reasonable or zero-dollar cancellation fees.

When You Shouldn’t Switch from Nicor Gas

While the open market provides valuable options, switching to an alternative supplier isn’t always the best move for every household. You may want to stay with the Nicor Gas default supply if:

  • Supplier offers are higher than the current utility supply rate.
  • You don’t want to be locked into a binding contract.
  • You plan to move out of the service territory in the near future.
  • The supplier’s offer includes a monthly fee that cancels out your projected savings.
  • The company will not clearly explain its contract renewal terms.

Fees, Renewal Terms, and Billing Pitfalls to Watch

Switching suppliers shouldn’t complicate your life, but you do need to understand exactly how the billing mechanisms shift. You’ll generally still receive one consolidated statement from your utility, which seamlessly includes both their delivery fees and your new supplier’s commodity charges. However, always check if your supplier charges a separate monthly administrative fee, as this can eat into your savings.

Beyond the standard utility fees, you must watch out for hidden costs tied to alternative suppliers. Some companies tack on hefty early termination fees (ETFs) if you try to break your contract before the term expires. Others lure you in with exceptionally low introductory rates that automatically spike after the first few months. Protecting yourself requires a keen eye for detail. Always read the terms of service closely, ask about sign-up fees, and clarify exactly what happens when your initial contract period concludes.

Heads Up

Watch out for door-to-door sales scams and aggressive marketing tactics, and always read the fine print regarding promotional rates before signing a binding contract.

Nicor Gas Deals, Rebates, and Ways to Lower Usage

Beyond shopping for lower supply rates, there are structural ways to consistently manage your utility expenses. One of the most effective strategies is enrolling in a budget billing plan, which takes your projected annual usage and spreads the costs evenly across 12 months. This practically eliminates those difficult winter heating spikes, giving you a predictable monthly payment.

You can also explore the Nicor Gas Energy Efficiency Program, which offers generous financial rebates for upgrading old appliances and provides free home energy assessments. By combining a competitive supply rate with smart usage habits, you can better manage your financial burden. For more tips on retaining heat throughout the season, check out our guide on winterizing your home to keep the cold out and the savings in.

Renters and homeowners alike can request free energy-saving kits directly through the utility, which include high-impact upgrades like weatherstripping and low-flow showerheads.

Eco-Conscious Natural Gas Choices for Illinois Homes

Taking control of your energy choices isn’t just about saving money — it’s also a powerful opportunity to support sustainable practices. Your default utility is making strides in conservation through targeted utility-wide initiatives and broader net-zero emissions goals. These forward-thinking efforts aim to create highly efficient, environmentally friendly housing developments that use a fraction of the traditional energy footprint.

You can easily do your part at home by prioritizing energy-efficient upgrades. When replacing an old furnace or water heater, always look for ENERGY STAR certified heating and cooling equipment to significantly lower your carbon footprint. Many alternative suppliers and utility programs offer robust rebates for installing advanced smart thermostats or high-efficiency hybrid space heating systems, making it easier than ever to make an environmentally mindful choice without draining your wallet.

Eco Edge

Some plans may advertise carbon offsets; review the details carefully to ensure you invest in a genuinely eco-conscious alternative while keeping your home exceptionally comfortable.

Making the Right Natural Gas Choice for Your Illinois Home

Managing your winter heating costs doesn’t have to be a source of ongoing anxiety. By taking advantage of the Customer Select program, you give yourself the power to shop the open market and lock in a rate that makes total sense for your budget. Thoroughly vetting alternative suppliers protects you from market volatility and hidden fees, ensuring you only pay for the energy you actually need. We encourage you to review your current bill, check the latest state comparisons, and confidently make a switch if it aligns with your financial goals. With a recent bill, a few supplier offers, and a careful look at the contract terms, you’ll be in a much better position to choose a plan that fits your home and budget.

Frequently Asked Questions About Nicor Gas Alternative Suppliers

How long does it take to switch to a Nicor Gas alternative supplier?

Once you sign a contract with an alternative supplier, the switch typically takes one to two billing cycles to take full effect. You’ll receive a confirmation letter in the mail detailing the exact start date of your new rate.

Will my natural gas service be interrupted if I change suppliers?

No, your service will never be interrupted when switching suppliers. The primary utility still delivers the natural gas through the exact same pipes, ensuring a seamless transition with zero downtime.

What happens to my rate if my alternative supplier contract expires?

If you let your contract expire without renewing or switching to a new plan, your supplier will usually roll your account into a variable-rate plan automatically. These default variable rates are often significantly higher, so we strongly recommend setting a calendar reminder to shop for a new rate before your term ends.

Does Nicor Gas offer a grace period if I want to cancel my new supplier contract?

Illinois law provides a rescission period for energy switches. You generally have a short window—often up to 10 days after the utility processes the enrollment—to cancel the new contract without paying an early termination fee. Always verify the exact rescission terms in your supplier contract.

Who do I call if I smell a gas leak after switching my supplier?

If you smell gas, leave the area immediately and call Nicor Gas emergency service from a safe location. Your supplier sells the gas commodity, but Nicor Gas remains responsible for emergency response and pipeline safety.

Are there early termination fees for switching away from the default utility rate?

No, you’ll never pay a cancellation fee to leave the standard utility rate. Early termination fees only apply if you attempt to break a fixed-rate contract with an alternative supplier before the agreed-upon term concludes.

About the Author

David Cosseboom Author Image
Editor in Chief

David has been an integral part of some of the biggest utility sites on the internet, including InMyArea.com, HighSpeedInternet.com, BroadbandNow.com, and U.S. News. He brings over 15 years of experience writing about, compiling and analyzing utility data.