Transformative Pumped Hydro Energy Storage Project
Evolve and TransAlta Corporation (TransAlta) have partnered to develop the Tent Mountain Pumped Hydro Energy Storage (TM-PHES) project.
The TM-PHES will repurpose the historical Tent Mountain Mine which is a reclaimed legacy coal mine, located in the Crowsnest Pass, approximately 16 km west of the township of Coleman, Alberta.
The TM-PHES leverages existing assets at Tent Mountain, which includes a 300m drop (or “head”) between two large water reservoirs, located on private land owned by Evolve, and left behind from historical mining operations.
In 2022, Evolve completed a Pre-Feasibility Study (PFS) for the TM-PHES which found Tent Mountain is suitable for hosting a PHES with an 80+ year project life, 320 MW installed capacity, with a continuous generation duration of more than 15 hours, resulting in up to 4,955 MWh of energy storage. Evolve and TransAlta are now in the process of advancing the project through the front-end engineering design (FEED) phase.