The table below shows Illinois Energy's TruBalance® Plan variable rates and Nicor Gas' gas supply costs for the past 12 months.
| Offer Month | TruBalance Plan Variable Rate | Nicor Gas' Supply Cost |
|---|---|---|
| Sep 2026 | $0.694/per therm | $0.33/per therm |
| Aug 2026 | $0.702/per therm | $0.36/per therm |
| Jul 2026 | $0.6553/per therm | $0.36/per therm |
| Jun 2026 | $0.693/per therm | $0.36/per therm |
| May 2026 | $0.641/per therm | $0.36/per therm |
| Apr 2026 | $0.617/per therm | $0.46/per therm |
| Mar 2026 | $0.617/per therm | $0.49/per therm |
| Feb 2026 | $1.022/per therm | $0.54/per therm |
| Jan 2026 | $0.789/per therm | $0.42/per therm |
| Dec 2025 | $0.769/per therm | $0.39/per therm |
| Nov 2025 | $0.685/per therm | $0.39/per therm |
| Oct 2025 | $0.659/per therm | $0.39/per therm |