BOISE, IDAHO – August 7, 2025 – Intermountain Gas Company filed its annual purchased gas cost adjustment (PGA) application (Case No. INT-G-25-04) with the Idaho Public Utilities Commission. If approved, residential and small commercial customers will see a price decrease, while large industrial customers will see an increase. In total, Intermountain Gas is asking the PUC to approve an average increase of 0.10% or $303,638. The PGA application is filed each year to ensure the costs Intermountain incurs on behalf of its customers are reflected in its sales prices. If approved, the new rates would go into effect on Oct. 1, 2025. A typical residential customer would see a monthly decrease of $0.12 or 0.28%. Commercial customers, on average, would see a monthly decrease of $0.06 or 0.03%. Large volume and transport customers, on average, will see the following monthly increases: LV-1 $649.24 or 5.06%; T-3 $483.33 or 10.76%; and T-4 $435.10 or 11.30%. The cost of natural gas is a straight passthrough to customers — Intermountain does not earn a profit on the cost of natural gas.
The changes in the proposed PGA are due to an increase in estimated gas commodity and transportation costs for the coming year, offset by lower estimated storage costs and over-collected gas costs from the prior PGA. Intermountain Gas urges all customers to use energy wisely. For more information about the company’s energy efficiency program and available rebates for installing high efficiency equipment, visit www.intgas.com/saveenergy. Conservation tips, information on government payment energy assistance and programs to help consumers level out their energy bills over the year can be found on the company’s website www.intgas.com. The request is a proposal and is subject to public review and approval by the PUC. A copy of the application is available for review at the commission, its homepage www.puc.idaho.gov, as well as the company’s website www.intgas.com. Written comments regarding the application (INT-G-25-04) may be filed with the commission by going to puc.idaho.gov/Form/CaseComment or mailing to:
Idaho Public Utilities Commission
P.O. Box 83720
Boise, ID 83720-0074
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