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 |
|---|---|---|
| Nov 2024 | $0.447/per therm | $0.4396/per therm |
| Oct 2024 | $0.447/per therm | $0.3260/per therm |
| Sep 2024 | $0.383/per therm | $0.2974/per therm |
| Aug 2024 | $0.385/per therm | $0.3142/per therm |
| Jul 2024 | $0.419/per therm | $0.3639/per therm |
| Jun 2024 | $0.397/per therm | $0.3418/per therm |
| 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 |