The table below shows Illinois Energy's FlexPlan® variable rates and Nicor Gas' gas supply costs for the past 12 months.
| Offer Month | FlexPlan Variable Rate | Nicor Gas' Supply Cost |
|---|---|---|
| Aug 2023 | $0.422/per therm | $0.40/per therm |
| Jul 2023 | $0.436/per therm | $0.39/per therm |
| Jun 2023 | $0.398/per therm | $0.39/per therm |
| May 2023 | $0.397/per therm | $0.39/per therm |
| Apr 2023 | $0.401/per therm | $0.45/per therm |
| Mar 2023 | $0.449/per therm | $0.45/per therm |
| Feb 2023 | $0.644/per therm | $0.59/per therm |
| Jan 2023 | $0.804/per therm | $0.69/per therm |
| Dec 2022 | $0.900/per therm | $0.85/per therm |
| Nov 2022 | $0.695/per therm | $1.14/per therm |
| Oct 2022 | $0.764/per therm | $1.24/per therm |
| Sep 2022 | $1.079/per therm | $1.24/per therm |