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

Offer Month TruBalance Variable Rate North Shore Gas' Supply Cost
Aug 2023 $0.422/per therm $0.3371/per therm
Jul 2023 $0.618/per therm $0.2968/per therm
Jun 2023 $0.599/per therm $0.2673/per therm
May 2023 $0.598/per therm $0.2842/per therm
Apr 2023 $0.550/per therm $0.3250/per therm
Mar 2023 $0.574/per therm $0.2534/per therm
Feb 2023 $0.671/per therm $0.4501/per therm
Jan 2023 $0.782/per therm $0.6601/per therm
Dec 2022 $0.900/per therm $0.4580/per therm
Nov 2022 $0.797/per therm $0.7248/per therm
Oct 2022 $0.882/per therm $0.8618/per therm
Sep 2022 $1.089/per therm $0.9265/per therm