The table below shows Illinois Energy's PriceCap® Plan variable rates and Nicor Gas' gas supply costs for the past 12 months.
| Offer Month | PriceCap Plan Variable Rate | Nicor Gas' Supply Cost |
|---|---|---|
| Mar 2026 | $0.504/per therm | $0.49/per therm |
| Feb 2026 | $0.849/per therm | $0.54/per therm |
| Jan 2026 | $0.729/per therm | $0.42/per therm |
| Dec 2025 | $0.689/per therm | $0.39/per therm |
| Nov 2025 | $0.541/per therm | $0.39/per therm |
| Oct 2025 | $0.488/per therm | $0.39/per therm |
| Sep 2025 | $0.489/per therm | $0.45/per therm |
| Aug 2025 | $0.510/per therm | $0.52/per therm |
| Jul 2025 | $0.503/per therm | $0.54/per therm |
| Jun 2025 | $0.511/per therm | $0.54/per therm |
| May 2025 | $0.503/per therm | $0.54/per therm |
| Apr 2025 | $0.575/per therm | $0.58/per therm |