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

 

Offer Month FlexPlan Variable Rate  North Shore Gas' Supply Cost
May 2024 $0.339/per therm $0.3462/per therm
Apr 2024 $0.345/per therm $0.3537/per therm
Mar 2024 $0.350/per therm $0.3879/per therm
Feb 2024 $0.517/per therm $0.4135/per therm
 Jan 2024 $0.480/per therm $0.4117/per therm
Dec 2023 $0.476/per therm $0.4696/per therm
Nov 2023 $0.478/per therm $0.4547/per therm
Oct 2023 $0.436/per therm $0.3926/per therm
Sep 2023 $0.430/per therm $0.3512/per therm
Aug 2023 $0.422/per therm $0.3371/per therm
Jul 2023 $0.436/per therm $0.2968/per therm
Jun 2023 $0.398/per therm $0.2673/per therm