Gas

Gas Supply Prices: September

Ameren Illinois – 43.17 cents per therm (DOWN about 7 percent from September 2025)
Consumers Gas – $1.01 per therm (UP about 89 percent from September 2025)
Illinois Gas – 44.71 cents per therm (UP about 7 percent from September 2025)
Liberty Utilities – 69.89 cents per therm (UP about 41 percent from September 2025)
MidAmerican Energy – 44.07 cents per therm (DOWN about 26 percent from September 2025)
Mt. Carmel – 38.86 cents per therm (UP about 16 percent from September 2025)
Nicor Gas – 33.00 cents per therm (DOWN about 27 percent from September 2025)
North Shore Gas – 38.88 cents per therm (UP about 14 percent from September 2025)
Peoples Gas – 31.45 cents per therm (UP about 5 percent from September 2025)

Note: See historical prices here.