Residential tariff · MT
REDS-1 Residential Customer
NorthWestern Corporation · Flat · filed 2023
What this tariff charges
| Fixed charge | $4.20 per month |
|---|---|
| Structure | Flat |
| Filed | 2023-04-01 |
Energy rates
The charged price is the base rate plus its adjustment. Adjustments carry fuel and rider costs and are frequently most of the bill, so a comparison built on the base rate alone is meaningless.
Energy charge
| Tier | Up to | Base | Adjustment | Charged $/kWh |
|---|---|---|---|---|
| 1 | no limit | 0.11356 | 0.00294 | 0.11649 |
What it costs at different usage levels
| kWh per month | Annual total | Effective $/kWh |
|---|---|---|
| 500 | $749.36 | $0.1249 |
| 1000 | $1,448.33 | $0.1207 |
| 2000 | $2,846.26 | $0.1186 |
Effective rate includes the fixed charge, which is why it falls as usage rises.
Rooftop solar on this tariff
A 7 kW system costing $21,000 before incentives would save between $593 and $1,096 a year on this tariff, paying back in 19–35 years . No federal tax credit is included: Section 25D ended on December 31, 2025.
no sell rate filed, but this utility reports residential net metering - the range spans no export credit to full retail netting. Compare across this state →
URDB rate id 64418e57b71d9d079b05a5e2 · utility source document · all NorthWestern Corporation tariffs