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 |
|---|---|---|
| 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 |
| Feb 2025 | $0.675/per therm | $0.4957/per therm |
| Jan 2025 | $0.762/per therm | $0.4471/per therm |
| Dec 2024 | $0.739/per therm | $0.449/per therm |
| Nov 2024 | $0.658/per therm | $0.4396/per therm |
| Oct 2024 | $0.708/per therm | $0.3260/per therm |
| Sep 2024 | $0.691/per therm | $0.2974/per therm |