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NorthWestern Energy, founded in 1923 and based in Sioux Falls, SD, supplies electricity and natural gas to about 753,600 customers across Montana, South Dakota, Nebraska, and Yellowstone, operating extensive transmission and distribution networks.

Northwestern Energy Group Inc. provides regulated electricity and natural gas supply, transmission, and distribution to about 787,000 customers across Montana, South Dakota, and Nebraska.
In 2025, NorthWestern Energy was prominently in the spotlight due to a contentious and highly publicized rate case in Montana. The utility sought a significant rate increase to cover investments and expenses, leading to months of scrutiny from the Montana Public Service Commission (PSC), consumer advocacy groups, and the public. After a series of hearings and a late settlement agreement, the PSC approved a substantially lower rate increase than the company had initially implemented on an interim basis, forcing the company to issue refunds to customers.
Based on publicly available information, NorthWestern Energy Group Inc. did not announce or undertake any major strategic shifts in 2025 across the specified categories of restructuring, market moves, product strategy, M&A, partnerships, business model, technology bets, capital allocation, leadership, or operational changes.
Overall rating: B-
| PEER | PRICE | |
|---|---|---|
SO | $85.91 | COMPARE |
DUK | $115.90 | COMPARE |
WEC | $103.34 | COMPARE |
CNP | $38.69 | COMPARE |
CMS | $65.28 | COMPARE |
OGE | $45.95 | COMPARE |
IDA | $132.77 | COMPARE |
CMS-PB | $76.01 | COMPARE |