320MW/4,955 MWh (15+ hours) Pumped Hydro Energy Storage
Powering up to 400,000 Albertan homes simultaneously
Will create up to 200 construction jobs and 30 full time operational jobs over an 80+ year project life
Up to 500,000 tonnes* of CO₂ emissions abated annually
* Assumes cycling once per day and powered by renewable electricity
PRE-FEASIBILITY STUDY CONFIRMS TM-PHES AS AN OUTSTANDING ENERGY STORAGE PROJECT WITH COMPELLING ECONOMICS
EVOLVE HAS FORMED PARTNERSHIP WITH TRANSALTA TO CO-OWN AND JOINTLY MANAGE THE TM-PHES
PUMPING WATER UP TO STORE ENERGY
Water is pumped into the upper reservoir using low-cost energy when electricity demand is low or there is an excess of renewable energy.
TM-PHES Project Status
On a $/MW (power output) and $/MWh (energy stored) basis, the TM-PHES compares favourably to similar PHES projects globally. PHES technology has a significantly larger capacity and duration and offers exceptional capital intensity when compared to other available energy storage options.
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.
In 2023, Evolve and its partner TransAlta Corporation completed a geotechnical investigation program for the TM-PHES. The geotechnical investigation program targeted the areas of the project that host the major infrastructure elements, namely, the upper reservoir, lower reservoir and dams, penstock route, and powerhouse. The data collected will be used to guide the final engineering design for the project, through a feasibility study and into FEED.
|Project Life||80+ Year|
|Installed Capacity||320 MW|
|Storage Capacity||Up to 4,955 MWh|
|Continuous Generation Duration||15± hours|
|Upper Reservoir Active Volume||3.55 million m3|
|Upper Reservoir Minimum Operating Level||1,783m|
|Lower Reservoir Minimum Operating Level||1,480m|
|Maximum Gross Head||320m|
|Minimum Gross Head||288m|
TM-PHES Grid Stability Benefits
The TM-PHES is located near an existing transmission corridor and can help reduce congestion on major lines in the region
The TM-PHES will contribute inertia to the grid, which helps keep the frequency stable and avoid blackouts.