PURCHASED GAS COST RATE

On July 31, 2025, Mountaineer made a filing with the PSC to increase the current Purchased Gas Cost rates by approximately $0.50 per Mcf for residential customers and $2.083 for general service customers. The proposed rates are $3.960 per Mcf for residential customers and $7.391 per Mcf for general service customers. Mountaineer has proposed to increase the residential pipeline demand charge to $20.59 per month, an increase of $9.51 from the current rate of $11.08 per month.

Based on average annual usage of 72 Mcf for a residential customer, the annual increase will be approximately $150.12, or $12.51 per month on average. The proposed changes in rates will become effective November 1, 2025, unless otherwise ordered by the PSC.

The Company’s cost for purchasing natural gas is reviewed annually by the PSC, and any changes are passed through to customers with no markup or profit margin. These costs include charges for natural gas, transportation, and storage.