The table below shows Illinois Energy's FlexPlan® variable rates and Peoples Gas' gas supply costs for the past 12 months.
| Offer Month | FlexPlan Variable Rate | Peoples Gas' Supply Cost |
|---|---|---|
| Aug 2023 | $0.422/per therm | $0.2977/per therm |
| Jul 2023 | $0.436/per therm | $0.2481/per therm |
| Jun 2023 | $0.398/per therm | $0.2356/per therm |
| May 2023 | $0.397/per therm | $0.3602/per therm |
| Apr 2023 | $0.401/per therm | $0.2976/per therm |
| Mar 2023 | $0.449/per therm | $0.2495/per therm |
| Feb 2023 | $0.644/per therm | $0.4227/per therm |
| Jan 2023 | $0.804/per therm | $0.5700/per therm |
| Dec 2022 | $0.900/per therm | $0.5527/per therm |
| Nov 2022 | $0.695/per therm | $0.7116/per therm |
| Oct 2022 | $0.764/per therm | $1.0730/per therm |
| Sep 2022 | $1.079/per therm | $1.0472/per therm |