Where Does Your Energy Come From?

Our electric portfolio includes a balanced mix of safe, reliable, affordable and clean energy.

Protecting customers from energy market price spikes while maintaining reliable energy service

frost on powerlines and a cold, clear day

Protecting customers from energy market price spikes while maintaining reliable energy service

NorthWestern Energy always works to protect our customers from energy market price spikes to keep rates as affordable as possible while maintaining reliable energy service

Our Electric Generation Portfolio

NorthWestern Energy electric generation portfolio

Our Electric Generation Portfolio

In 2023, 55% of our electric generation was from carbon-free resources, compared to 40% of megawatt hours generated by the U.S. electric power industry.

Our Montana Electric Generation Portfolio

graph of Montana electric generation

Our Montana Electric Generation Portfolio

Our 100% clean hydro system is the backbone of our electric generation in Montana. We own 10 hydroelectric generating facilities in Montana, which supplied 34% of our electric generation in 2023. Wind and solar bring us to nearly 60% carbon-free generation.

Our South Dakota Electric Generation Portfolio

graph of South Dakota electric generation

Our South Dakota Electric Generation Portfolio

Nearly half of our electricity for our South Dakota customers comes from wind resources.

Contracted energy from Colstrip Energy Limited Partners (CELP), Yellowstone Energy Limited Partners (YELP) as well as a majority of the contracted wind, hydro and solar are federally mandated Qualifying Facilities, as defined under the Public Utility Regulatory Policies Act of 1978 (PURPA).

NorthWestern does not own all the renewable energy certificates (RECs) generated by contracted resources, and periodically sells its own RECs with proceeds benefiting retail customers. Accordingly, we cannot represent that 100% of carbon-free energy in the portfolio was delivered to our customers.