Under Construction – Glacier Battery System
BHE Montana is constructing a 75 megawatt x 2-hour Battery Energy Storage facility near Ethridge, Montana. The project is expected to be fully commissioned by December 2025. The battery is a stand-alone facility that will be used to support real-time scheduling of intermittent generation from BHE Montana’s wind and solar generation assets, adding an additional layer of resiliency to Montana’s energy grid. Glacier Battery System will be interconnected to the Montana-Alberta Tie Line.
The Glacier Battery System is highly complementary to Montana’s existing generation portfolio, creating operational efficiencies and strengthening the grid.