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 |
|---|---|---|
| May 2025 | $0.503/per therm | $0.5900/per therm |
| Apr 2025 | $0.575/per therm | $0.5279/per therm |
| Mar 2025 | $0.592/per therm | $0.4070/per therm |
| Feb 2025 | $0.621/per therm | $0.3894/per therm |
| Jan 2025 | $0.655/per therm | $0.3345/per therm |
| Dec 2024 | $0.608/per therm | $0.3173/per therm |
| Nov 2024 | $0.447/per therm | $0.3212/per therm |
| Oct 2024 | $0.447/per therm | $0.3006/per therm |
| Sep 2024 | $0.383/per therm | $0.2868/per therm |
| Aug 2024 | $0.385/per therm | $0.3710/per therm |
| Jul 2024 | $0.419/per therm | $0.3593/per therm |
| Jun 2024 | $0.397/per therm | $0.2815/per therm |