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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.
| Icon | PRODUCT | Q3-2025 | Q4-2025 | Q1-2026 | Q2-2026 |
|---|---|---|---|---|---|
![]() | Total Revenue | — | — | $497.57M | $392.6M ▼ |
![]() | Electricity US Regulated | $339.75M | $315.25M ▼ | — | — |
![]() | Natural Gas US Regulated | $47.2M | $99.01M ▲ | — | — |
| Map | REGION | Q1-2018 | Q2-2018 |
|---|---|---|---|
![]() | MONTANA | $40.9M | $17.6M ▼ |
![]() | SOUTH DAKOTA | $11.4M | $5.6M ▼ |
![]() | NEBRASKA | $11.4M | $5M ▼ |
Overall rating: C+
| PEER | PRICE | |
|---|---|---|
BKH | $72.80 | COMPARE |
SR | $82.56 | COMPARE |
OTTR | $90.84 | COMPARE |
DTG | $15.86 | COMPARE |
CPK | $132.71 | COMPARE |
AVA | $37.66 | COMPARE |
MGEE | $78.15 | COMPARE |
ELPC | $11.24 | COMPARE |