Category Archives: Marmora Pumped Storage

Marmora Pumped Storage – Clean Energy Hub Project

This closed-loop pumped storage Project does not seem likely to result in any serious negative impacts to other freshwater bodies, nor methylmercury contamination of fish tissue or greenhouse gas emissions, and it will provide clean backup power during the low-flow periods when small run-of-river hydroelectric facilities are shutting down because of reduced stream flow. Comparing the power output of this peak demand storage Project, and its minimal environmental impacts to the number of rivers it would have taken to generate 400 to 500 MW of power from dozens of small hydropower projects, makes it ORA’s preferred choice over conventional hydroelectric facilities.

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Marmora Pumped Storage – Crowe River

Marmora Generating Station Proposal

The Marmora Pumped Storage power generation proposal is located in Marmora, Ontario, adjacent to the Crowe River.The Marmora project will use an open pit and an upper reservoir in a closed-loop configuration.  Combination pumps/generators will pump water up into the reservoir during off-peak periods and then release it back down into the mine during on-peak periods to generate electricity. The design provides for an average head of 140 meters, producing 400 MW of generated power to enable time-shifting to support renewable energy sources and grid demand patterns.
Learn more about the project
  Technology:  Pumped Storage Hydro
  Main Equipment: Francis combination pumps/generators
  Fuel: Water
  Capacity: 400 MW
  Proponent:  Northland Power