The Ontario Pumped Storage Project is truly a made-in-Ontario project that will power economic growth, create good local jobs and help build a reliable electricity system for the next generation.
The demand for electricity in Ontario is expected to grow 65 per cent by 2050. Ontario needs to secure both new generation and storage capacity to meet the growing demand. Pumped storage offers a reliable and sustainable solution by storing excess energy during periods of low demand and redistributing it during peak usage hours in Ontario.
Ontario Pumped Storage is a multi-billion-dollar investment that will be built with Ontario materials by Ontario workers – strengthening local supply chains and boosting Ontario’s economy.
Pumped storage is not just an energy solution — it’s an economic engine that creates jobs and builds a resilient electricity system for Ontarians.
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Powering Ontario Forward
The Project is a local energy solution that will create jobs and economic stimulation in Ontario, while connecting reliable and sustainable energy to power Ontario homes and businesses.
The Independent Electricity System Operator (IESO) estimates that energy demand in Ontario is anticipated to grow by 65 per cent by 2050. We need an all of the above approach to ensure energy security, affordability and sustainability. Pumped storage plays a vital role in the expansion of Ontario’s clean energy grid as it provides a reliable, secure and affordable electricity solution that will keep excess electricity, right here in Ontario.
When operational, the Project will provide 1,000 MW of flexible, reliable energy to Ontario's electricity system — that's enough to power a million homes for up to 11 hours.
Pumped storage keeps the grid in balance – storing energy when demand is low and releasing it when Ontario needs it most.
What is pumped storage?
Pumped storage is an effective, responsible way for Ontario to meet its electricity and power system needs.
Using water and gravity, pumped storage acts like a giant battery. It stores excess electricity when demand is low and makes it available when it is high.
This made-in-Ontario project will use state-of-the-art technology to pump water from Georgian Bay to an upper reservoir when electricity demand is low, typically at night.
When electricity demand is high, typically during the day, the water flows from the upper reservoir to Georgian Bay, passing through a turbine, releasing energy back into the system to be used as electricity.