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The table below shows Illinois Energy's TruBalance® Plan variable rates and Nicor Gas' gas supply costs for the past 12 months.

Offer Month TruBalance Plan Variable Rate  Nicor Gas' Supply Cost
Jun 2025 $0.720/per therm $0.54/per therm
May 2025 $0.701/per therm $0.54/per therm
Apr 2025 $0.687/per therm $0.58/per therm
Mar 2025 $0.695/per therm $0.38/per therm
Feb 2025 $0.675/per therm $0.32/per therm
Jan 2025 $0.762/per therm $0.28/per therm
Dec 2024 $0.739/per therm $0.25/per therm
Nov 2024 $0.658/per therm $0.28/per therm
Oct 2024 $0.708/per therm $0.28/per therm
Sep 2024 $0.691/per therm $0.32/per therm
Aug 2024 $0.692/per therm $0.36/per therm
Jul 2024 $0.659/per therm $0.36/per therm