Electricity rates by utility · Montana
NorthWestern Energy commercial electricity rates, as filed
NorthWestern Energy (NorthWestern Corporation)
An independent summary by DEKALOS of NorthWestern Energy (NorthWestern Corporation)'s filed rate schedules. DEKALOS is not affiliated with or endorsed by NorthWestern Energy (NorthWestern Corporation).
Service area: Montana (NorthWestern Energy service area). Prices last checked against the utility’s filed tariff on September 23, 2026.
Your schedule: GSEDS-1 ND GSEDS-1 D
These are the base charges in NorthWestern Energy's commercial rate schedules that DEKALOS covers, from what NorthWestern Energy (NorthWestern Corporation) filed with its state regulator: the fixed charge, the demand charge and the energy charge, each with the date it took effect and the sheet it comes from. Where a sheet splits one charge into parts, the price here is their sum. The schedule on a bill is printed near the meter readings, as the rate, the rate schedule or the service classification.
GSEDS-1 ND — General Service Delivery, non-demand meter
| Charge | Applies to | Price |
|---|---|---|
| Customer charge | Each month | $22.05 a month |
| Demand charge | No demand charge on this schedule | None |
| Energy charge | Every kWh | $0.034516 a kWh |
GSEDS-1 D — General Service Delivery, demand meter
| Charge | Applies to | Price |
|---|---|---|
| Customer charge | Each month | $32.00 a month |
| Demand charge | Every kW of billing demand | $6.96677 a kW |
| Energy charge | Every kWh | $0.003465 a kWh |
What these prices leave out
These are base charges as NorthWestern Energy (NorthWestern Corporation) filed them. Riders, surcharges, taxes and the supply of the electricity itself are not included, so they are not a bill’s total, and a gap between the two is not by itself a mistake.
NorthWestern Energy's bill prints delivery and supply as separate columns, and the supply column (its Electricity Supply Service) is re-priced every quarter, so the schedules here price delivery only. The supply half of the bill is not on this page.
Price one month on your own schedule
Type the month’s kWh and billed kW from your bill, and the checker writes out that month’s base charges on your schedule, line by line. Nothing you type leaves the page.