Compare the Best Natural Gas Rates for Illinois

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The electricity price to compare is now as high as 11.33¢ per kWh!

Recommended Natural Gas Plans for Chicago

    • I normally use:
      1,000
      kWh per month

    Featured Community Solar Plan

    All Natural Gas Plans

      12 Month Home Natural Gas Plan

      $ 0.599 Therm
      12 Months Locked Rate
      • 100% Green Energy
      $0.00 MRC per month
      • estimate for 1000 kWh usage
      Fixed Rate
      Fixed Rate

      Plan Type

      Fixed Rate
      12 Months

      Locked Rate

      Fixed Rate
      $50

      Early Termination Fee

      Fixed Rate
      fixed-rate

      Plan

      (Note: The Early Termination Fee will not be charged if you end your contract early because you are moving out.)

      Constellation is the US's largest producer of carbon-free energy and a leader of retail supply of power, natural gas and home services for residences ..

      Utility:

      Nicor logo

      Residential Clean Gas Plan

      $ 0.335 Therm
      1 Month Variable Rate
      • 100% Green Energy
      $0.00 MRC per month
      • estimate for 1000 kWh usage
      Save 6.9%under utility rate
      Fixed Rate
      Fixed Rate

      Plan Type

      Fixed Rate
      1 Month

      Locked Rate

      Fixed Rate
      Month-to-Month

      Plan

      Flex Gas Choice Plan

      • Digital Affiliate - 3 Mo Variable, No Frills
      $ 0.349 Therm
      3 Months Locked Rate
      • 100% Green Energy
      $0.00 MRC per month
      • estimate for 1000 kWh usage
      Save 3.1%under utility rate
      Fixed Rate
      Fixed Rate

      Plan Type

      Fixed Rate
      3 Months

      Locked Rate

      Fixed Rate
      fixed-rate

      Plan

      Utility:

      Nicor logo

      Carbon Conscious plan

      • 100% carbon-offset natural gas
      $ 0.450 Therm
      3 Months Locked Rate
      • 100% Green Energy
      $0.00 MRC per month
      • estimate for 1000 kWh usage
      Fixed Rate
      Fixed Rate

      Plan Type

      Fixed Rate
      3 Months

      Locked Rate

      Fixed Rate
      fixed-rate

      Plan

      Green Mountain Energy Company was founded in 1997 with the mission to change the way power is made. As the longest serving renewable energy retailer i..

      Utility:

      Nicor logo

      Fixed-Rate Gas 12

      $ 0.467 Therm
      12 Months Locked Rate
      • 100% Green Energy
      $0.00 MRC per month
      • estimate for 1000 kWh usage
      Fixed Rate
      Fixed Rate

      Plan Type

      Fixed Rate
      12 Months

      Locked Rate

      Fixed Rate
      fixed-rate

      Plan

      Guard 12

      $ 0.479 Therm
      12 Months Locked Rate
      • 100% Green Energy
      $4.95 MRC per month
      • estimate for 1000 kWh usage
      Fixed Rate
      Fixed Rate

      Plan Type

      Fixed Rate
      12 Months

      Locked Rate

      Fixed Rate
      $4.95

      Monthly Recurring Charge

      Fixed Rate
      fixed-rate

      Plan

      Founded in 1999 and licensed to sell electricity in Texas in 2002, Spark Energy is now a national retail electricity and natural gas provider. They no..

      Utility:

      Nicor logo

      Green Guard 12

      $ 0.499 Therm
      12 Months Locked Rate
      • 100% Green Energy
      $4.95 MRC per month
      • estimate for 1000 kWh usage
      Fixed Rate
      Fixed Rate

      Plan Type

      Fixed Rate
      12 Months

      Locked Rate

      Fixed Rate
      $4.95

      Monthly Recurring Charge

      Fixed Rate
      fixed-rate

      Plan

      Founded in 1999 and licensed to sell electricity in Texas in 2002, Spark Energy is now a national retail electricity and natural gas provider. They no..

      Utility:

      Nicor logo

      18 Month Home Natural Gas Plan

      $ 0.579 Therm
      18 Months Locked Rate
      • 100% Green Energy
      $0.00 MRC per month
      • estimate for 1000 kWh usage
      Fixed Rate
      Fixed Rate

      Plan Type

      Fixed Rate
      18 Months

      Locked Rate

      Fixed Rate
      $50

      Early Termination Fee

      Fixed Rate
      fixed-rate

      Plan

      Constellation is the US's largest producer of carbon-free energy and a leader of retail supply of power, natural gas and home services for residences ..

      Utility:

      Nicor logo

      SureLock 12

      $ 0.589 Therm
      12 Months Locked Rate
      • 100% Green Energy
      $0.00 MRC per month
      • estimate for 1000 kWh usage
      Fixed Rate
      Fixed Rate

      Plan Type

      Fixed Rate
      12 Months

      Locked Rate

      Fixed Rate
      $0.00

      Early Termination Fee

      Fixed Rate
      fixed-rate

      Plan

      XOOM Energy is a retail energy provider that offers electricity and natural gas service in select states. Service areas include California, Ohio, Conn..

      Utility:

      Nicor logo

      6 Month Home Natural Gas Plan

      $ 0.599 Therm
      6 Months Locked Rate
      • 100% Green Energy
      $0.00 MRC per month
      • estimate for 1000 kWh usage
      Fixed Rate
      Fixed Rate

      Plan Type

      Fixed Rate
      6 Months

      Locked Rate

      Fixed Rate
      $50

      Early Termination Fee

      Fixed Rate
      fixed-rate

      Plan

      Constellation is the US's largest producer of carbon-free energy and a leader of retail supply of power, natural gas and home services for residences ..

      Utility:

      Nicor logo

      RescueLock 12

      $ 0.619 Therm
      12 Months Locked Rate
      • 100% Green Energy
      $0.00 MRC per month
      • estimate for 1000 kWh usage
      Fixed Rate
      Fixed Rate

      Plan Type

      Fixed Rate
      12 Months

      Locked Rate

      Fixed Rate
      $0.00

      Early Termination Fee

      Fixed Rate
      fixed-rate

      Plan

      XOOM Energy is a retail energy provider that offers electricity and natural gas service in select states. Service areas include California, Ohio, Conn..

      Utility:

      Nicor logo

      SureLock 24

      $ 0.629 Therm
      24 Months Locked Rate
      • 100% Green Energy
      $0.00 MRC per month
      • estimate for 1000 kWh usage
      Fixed Rate
      Fixed Rate

      Plan Type

      Fixed Rate
      24 Months

      Locked Rate

      Fixed Rate
      $0.00

      Early Termination Fee

      Fixed Rate
      fixed-rate

      Plan

      XOOM Energy is a retail energy provider that offers electricity and natural gas service in select states. Service areas include California, Ohio, Conn..

      Utility:

      Nicor logo
      Rates as of Jul 13, 2026 at 04:56 PM

      Featured Plan

        • I normally use:
          1,000
          kWh per month