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Understanding Energy Costs (MT) Tariffs and Rate Schedules Find the tariff or rate schedule for electric or natural gas service you are receiving from NorthWestern Energy. Rate Comparison Tool Compare our electric and natural gas rates to other utility companies across the country. Fuel Heating Cost Comparison Compare the cost of different fuel heating sources — wood, propane, #2 oil, pellets, coal, electric, and natural gas.
Understanding Energy Costs (MT)