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Home My WebLink About20260731Exhibit A - Proposed Tariffs.pdf RECEIVED JULY 31, 2026 IDAHO PUBLIC UTILITIES COMMISSION AVISTA UTILITIES Case No. AVU-G-26-03 EXHIBIT "A" Proposed Tariff Sheets Thirty-Sixth Revision Sheet 150 Replacing I.P.U.C. No.27 Thirty- Fifth Revision Sheet 150 150 AVISTA CORPORATION d/b/a Avista Utilities SCHEDULE 150 PURCHASE GAS COST ADJUSTMENT - IDAHO APPLICABLE: To Customers in the State of Idaho where Company has natural gas service available. PURPOSE: To pass through changes in costs resulting from purchasing and transporting natural gas, to become effective as noted below. RATE: (a) The retail rates of firm gas Schedules 101, 111 and 112 are to be increased by 27.5940 per therm in all blocks of these rate schedules. (b) The rates of interruptible Schedules 131 and 132 are to be increased by 16.6190 per therm. (c) The rate for transportation under Schedule 146 is to be decreased by 0.0000 per therm. WEIGHTED AVERAGE GAS COST: The above rate changes are based on the following weighted average cost of gas per therm as of the effective date shown below: Demand Commodity Total Schedules 101 10.9750 16.6190 27.5940 Schedules 111 and 112 10.9750 16.6190 27.5940 Schedules 131 and 132 0.0000 16.6190 16.6190 The above amounts include a gross revenue factor. Demand Commodity Total Schedules 101 10.9270 16.5470 27.4740 Schedules 111 and 112 10.9270 16.5470 27.4740 Schedules 131 and 132 0.0000 16.5470 16.5470 The above amounts do not include a gross revenue factor. BALANCING ACCOUNT: The Company will maintain a Purchase Gas Adjustment (PGA) Balancing Account whereby monthly entries into this Balancing Account will be made to reflect differences between the actual purchased gas costs collected from customers and the actual purchased gas costs incurred by the Company. Those differences are then collected from or refunded to customers under Schedule 155 — Gas Rate Adjustment. Issued July 31,2026 Effective November 1, 2026 Issued by Avista Utilities By Patrick Ehrbar— Director of Regulatory Affairs Thirty-Fifth Revision Sheet 150 Replacing I.P.U.C. No.27 Thirty-Fourth Revision Sheet 150 150 AVISTA CORPORATION d/b/a Avista Utilities SCHEDULE 150 PURCHASE GAS COST ADJUSTMENT - IDAHO APPLICABLE: To Customers in the State of Idaho where Company has natural gas service available. PURPOSE: To pass through changes in costs resulting from purchasing and transporting natural gas, to become effective as noted below. RATE: (a) The retail rates of firm gas Schedules 101, 111 and 112 are to be increased by 31u, 1 280 per therm in all blocks of these rate schedules. (b) The rates of interruptible Schedules 131 and 132 are to be increased by 21� per therm. (c) The rate for transportation under Schedule 146 is to be decreased by 0.0000 per therm. WEIGHTED AVERAGE GAS COST: The above rate changes are based on the following weighted average cost of gas per therm as of the effective date shown below: Demand Commodity Total Schedules 101 9.9800 21.1480 31.1280 Schedules 111 and 112 9.9800 21.1480 31.1290 Schedules 131 and 132 0.0000 21.1480 21.1480 The above amounts include a gross revenue factor. Demand Commodity Total Schedules 101 9.9370 21.^56-3().9930 Schedules 111 and 112 9.9370 —21.0560 3().9930 Schedules 131 and 132 0.0000 21.0560 21.0560 The above amounts do not include a gross revenue factor. BALANCING ACCOUNT: The Company will maintain a Purchase Gas Adjustment (PGA) Balancing Account whereby monthly entries into this Balancing Account will be made to reflect differences between the actual purchased gas costs collected from customers and the actual purchased gas costs incurred by the Company. Those differences are then collected from or refunded to customers under Schedule 155 — Gas Rate Adjustment. Issued July 31,2025 Effective November 1, 2025 Issued by Avista Utilities By Patrick Ehrbar— Director of Regulatory Affairs Thirty-Sixth Revision Sheet 150 Replacing I.P.U.C. No.27 Thirty- Fifth Revision Sheet 150 150 AVISTA CORPORATION d/b/a Avista Utilities SCHEDULE 150 PURCHASE GAS COST ADJUSTMENT - IDAHO APPLICABLE: To Customers in the State of Idaho where Company has natural gas service available. PURPOSE: To pass through changes in costs resulting from purchasing and transporting natural gas, to become effective as noted below. RATE: (a) The retail rates of firm gas Schedules 101, 111 and 112 are to be increased by 27.5940 per therm in all blocks of these rate schedules. (b) The rates of interruptible Schedules 131 and 132 are to be increased by 16.6190 per therm. (c) The rate for transportation under Schedule 146 is to be decreased by 0.0000 per therm. WEIGHTED AVERAGE GAS COST: The above rate changes are based on the following weighted average cost of gas per therm as of the effective date shown below: Demand Commodity Total Schedules 101 10.9750 16.6190 27.5940 Schedules 111 and 112 10.9750 16.6190 27.5940 Schedules 131 and 132 0.0000 16.6190 16.61W The above amounts include a gross revenue factor. Demand Commodity Total Schedules 101 10.9270 16.5470 27.4740 Schedules 111 and 112 10.9270 16.5470 27.4740 Schedules 131 and 132 0.0000 16.5470 16.5470 The above amounts do not include a gross revenue factor. BALANCING ACCOUNT: The Company will maintain a Purchase Gas Adjustment (PGA) Balancing Account whereby monthly entries into this Balancing Account will be made to reflect differences between the actual purchased gas costs collected from customers and the actual purchased gas costs incurred by the Company. Those differences are then collected from or refunded to customers under Schedule 155 — Gas Rate Adjustment. Issued July 31,2026 Effective November 1, 2026 Issued by Avista Utilities By Patrick Ehrbar— Director of Regulatory Affairs Twenty-Eighth Revision Sheet 155 Canceling I.P.U.C. No.27 Twenty- Seventh Revision Sheet 155 155 AVISTA CORPORATION d/b/a Avista Utilities SCHEDULE 155 GAS RATE ADJUSTMENT - IDAHO AVAILABLE: To Customers in the State of Idaho where Company has natural gas service available. PURPOSE: To adjust gas rates for amounts generated by the sources listed below. MONTHLY RATE: (a) The rates of firm gas Schedules 101 and 111 are to be decreased by 5.1650 per therm in all blocks of these rate schedules. (b) The rate of interruptible gas Schedule 131 is to be decreased by 0.0000 per therm. (c) The rate of transportation gas Schedule 146 is to be decreased by 0.0000 per therm. SOURCES OF MONTHLY RATE: Changes in the monthly rates above result from amounts which have been accumulated in the Purchase Gas Adjustment (PGA) Balancing Account as described in Schedule 150 — Purchase Gas Cost Adjustment. SPECIAL TERMS AND CONDITIONS: The above Monthly Rate is subject to the provisions of Tax Adjustment Schedule 158. Issued July 31, 2026 Effective November 1, 2026 Issued by Avista Utilities By Patrick Ehrbar, Director of Regulatory Affairs (Q)_Jtl� Twenty-Seventh Revision Sheet 155 Canceling I.P.U.C. No.27 Twenty-Sixth Revision Sheet 155 155 AVISTA CORPORATION d/b/a Avista Utilities SCHEDULE 155 GAS RATE ADJUSTMENT - IDAHO AVAILABLE: To Customers in the State of Idaho where Company has natural gas service available. PURPOSE: To adjust gas rates for amounts generated by the sources listed below. MONTHLY RATE: (a) The rates of firm gas Schedules 101 and 111 are to be decreased by 6.2780 per therm in all blocks of these rate schedules. (b) The rate of interruptible gas Schedule 131 is to be decreased by 0.0000 per therm. (c) The rate of transportation gas Schedule 146 is to be decreased by 0.0000 pertherm. SOURCES OF MONTHLY RATE: Changes in the monthly rates above result from amounts which have been accumulated in the Purchase Gas Adjustment (PGA) Balancing Account as described in Schedule 150 — Purchase Gas Cost Adjustment. SPECIAL TERMS AND CONDITIONS: The above Monthly Rate is subject to the provisions of Tax Adjustment Schedule 158. Issued July 31, 2025 Effective November 1, 2025 Issued by Avista Utilities By Patrick Ehrbar, Director of Regulatory Affairs (Q)_Jtl� Twenty-Eighth Revision Sheet 155 Canceling I.P.U.C. No.27 Twenty- Seventh Revision Sheet 155 155 AVISTA CORPORATION d/b/a Avista Utilities SCHEDULE 155 GAS RATE ADJUSTMENT - IDAHO AVAILABLE: To Customers in the State of Idaho where Company has natural gas service available. PURPOSE: To adjust gas rates for amounts generated by the sources listed below. MONTHLY RATE: (a) The rates of firm gas Schedules 101 and 111 are to be decreased by 5.1650 per therm in all blocks of these rate schedules. (b) The rate of interruptible gas Schedule 131 is to be decreased by 0.0000 per therm. (c) The rate of transportation gas Schedule 146 is to be decreased by 0.0000 per therm. SOURCES OF MONTHLY RATE: Changes in the monthly rates above result from amounts which have been accumulated in the Purchase Gas Adjustment (PGA) Balancing Account as described in Schedule 150 — Purchase Gas Cost Adjustment. SPECIAL TERMS AND CONDITIONS: The above Monthly Rate is subject to the provisions of Tax Adjustment Schedule 158. Issued July 31, 2026 Effective November 1, 2026 Issued by Avista Utilities By Patrick Ehrbar, Director of Regulatory Affairs (Q)_Jtl�