The table below shows Illinois Energy's TruBalance® Plan variable rates and North Shore Gas' gas supply costs for the past 12 months.
| Offer Month | TruBalance Variable Rate | North Shore Gas' Supply Cost |
|---|---|---|
| Feb 2026 | $1.022/per therm | $0.4676/per therm |
| Jan 2026 | $0.789/per therm | $0.5323/per therm |
| Dec 2025 | $0.769/per therm | $0.5153/per therm |
| Nov 2025 | $0.685/per therm | $0.4391/per therm |
| Oct 2025 | $0.659/per therm | $0.3648/per therm |
| Sep 2025 | $0.709/per therm | $0.3417/per therm |
| Aug 2025 | $0.739/per therm | $0.3594/per therm |
| Jul 2025 | $0.666/per therm | $0.4249/per therm |
| Jun 2025 | $0.720/per therm | $0.5298/per therm |
| May 2025 | $0.701/per therm | $0.6261/per therm |
| Apr 2025 | $0.687/per therm | $0.5600/per therm |
| Mar 2025 | $0.695/per therm | $0.5640/per therm |