How NorthWestern Energy’s plans work
REDS-1 (Residential Electric Default Supply). One price per kWh at every hour, all year: 15.7¢. Shifting use to other hours changes nothing on this plan; using less is the only lever. Fixed charge: $4.20 a month.
Prices on this page are all-in per kWh, before taxes: base rates, supply and every per-kWh rider in the utility’s current tariff sheets. Your bill shows them as separate lines, and riders can change between tariff revisions.
As a cross-check, NorthWestern Energy billed its residential customers an average of 14.42¢ per kWh in 2025 (revenue ÷ sales, EIA-861). A plan taken from URDB is shown only if its all-in price is consistent with that figure, adjusted for Montana’s price change since.