Frequently Asked Questions

When you told us you wanted our original design enhanced for the preservation of Georgian Bay and the local environment, we used that feedback to make significant project design changes to maximize protection of the ecosystem, the local environment and Georgian Bay.

Here’s how:

• Structures that move water into and out of Georgian Bay will be located in deep water, far from the shore, with screens to protect fish and other aquatic life.
• Water will flow in and out of deep water inlet/outlet structures at speeds similar to the natural currents in Georgian Bay. These speeds enable fish to avoid the structures and also ensure water clarity is not impacted.
• Most of the infrastructure will be invisible and underground, using tunnelling techniques that minimize ground disturbances and maintain existing vegetation and habitat.

We are actively monitoring and collecting data to study vegetation, wetlands and wildlife in the area. It helps us refine our design and will serve as the basis for federal and provincial environmental regulatory reviews.

Before we begin construction, the project will undergo rigorous provincial and federal environmental assessments conducted by independent government regulators to fully understand and limit potential environmental, health, social and economic impacts; and we will adhere to all regulatory processes and requirements.

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 address the supply shortfall. Pumped storage projects can balance the grid by taking existing generation and shifting it from periods of low demand to periods of high demand.  Although alternative storage technologies exist, pumped storage offers significant benefits by using local labour and materials – this approach generates thousands of jobs for Canadians and reduces dependence on foreign supply chains.

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. Emission-free power generation, such as nuclear, wind and hydro, often generates excess electricity when it’s not needed and does not always generate enough power when consumers need it most. Using water and gravity, this project is effectively a natural battery that will store electricity for when Ontario needs it most.  

The project will contribute to a vibrant local economy for Meaford. Built just outside of town at 4 CDTC, the project will bring many community benefits, including prioritizing local workers, materials, suppliers and services. It will create good jobs for people in town and throughout the region. And that means more customers for local restaurants and small businesses.

This made-in-Ontario Project will provide a lasting local impact through employment, investments in local businesses and the community.

• Local first: We are committed to hiring and buying local to create good jobs and increase spending at local businesses. Find out about opportunities for your local business.
• Spending in Meaford: Creating construction, engineering and hospitality jobs associated with the Project will bring a boost in spending at local restaurants and small businesses during development and construction and into operation.
• Investing in Meaford: Working closely with local government and community organizations, we are investing in opportunities that focus on local needs through local partnerships and initiatives that will enhance the long-term quality of life in Meaford.

Using water and gravity, this project is effectively a natural battery that will provide reliable, secure and cost-effective electricity for all of Ontario. It will provide 1,000 megawatts (MW) of energy to Ontario’s electricity system by storing electricity in the form of water, pumped from Georgian Bay to an upper reservoir, during periods of low power demand.

The water stored in the upper reservoir is like a giant battery, ready to create energy when it is released back to Georgian Bay, flowing underground through turbines, delivering electricity back to Ontario’s power grid when it is needed most.

We know that the construction of large infrastructure needs to be undertaken with residents in mind, and we are committed to developing and implementing a comprehensive plan that makes sense for your community. Starting with extensive pre-construction community engagement, we will develop noise, air, traffic, infrastructure and other mitigation plans and will ensure that continuous stakeholder feedback will ensure that the plans remain effective as the Project continues to progress.

Yes! TC Energy listened to community members who told us they were concerned about the beauty and habitat of Georgian Bay. We used that valuable feedback to make significant project design enhancements, including:

• Relocating the structures that move water to and from Georgian Bay into deep water, far from the shore, with screens to protect fish and other aquatic life.
• Ensuring water will flow in and out of the deep water inlet/outlet structures at speeds similar to the natural currents in Georgian Bay. These speeds enable fish to avoid the structures and also ensure water clarity is not impacted.
• Locating most of the infrastructure underground, reducing noise and visibility, and using tunnelling techniques that minimize ground disturbances and maintain existing vegetation and habitat.

Absolutely. Since 2020, third-party consultants have been conducting project-specific environmental field studies every season to gather data on water quality and fish and their habitat, and have used these findings — and will continue to use them — to inform the design of the project.

The findings will also be incorporated into the upcoming rigourous and comprehensive provincial and federal environmental and impact assessments that will be conducted by independent government regulators. Throughout these processes, which we expect will occur over several years, there will be extensive opportunities for public and community involvement.

The proximity of OPS to Georgian Bay allows for an open loop system because of the availability of a massive and stable Great Lakes water source. The volume of water that will be moved in and out of Georgian Bay, is a tiny fraction of the available water in Georgian Bay and Lake Huron.

We have evaluated the potential for a closed loop lower reservoir and have determined that it would not be feasible for several reasons, including:

• The terrain below the escarpment would require an extremely long, narrow reservoir that would take up a massive portion of the Meaford base. It is unlikely that a closed loop system would be compatible with the ongoing operation of the Meaford base which would not be permitted by the Department of National Defence.
• A closed loop design would require extensive aboveground infrastructure resulting in more disturbance and environmental effects. The lower reservoir and other surface infrastructure would result in negative impacts on wildlife, vegetation, archaeological sites, the acoustic environment, viewsheds and the integrity of the escarpment. 
• The loss of elevation would reduce the generation capacity of the Project to the point of making the project uneconomical.

In 1907, Switzerland became the first country in the world to store excess energy. That’s more than 100 years that pumped storage has been operating successfully. But just as with computers, phones and cars, pumped storage technology has advanced significantly, and the Ontario Pumped Storage Project is implementing and using the most advanced state-of-the-art technology that is virtually unrecognizable from its predecessors. Several nations continue to develop and incorporate pumped storage into their energy solutions due to its highly reliable, long-life storage benefits, and its effectiveness as a large-scale, long-duration electricity storage solution.

Unlike other electricity storage options, such as lithium-ion batteries, the Ontario Pumped Storage Project is expected to have a lifespan of 100 years, pending refurbishment after about 50 years.

We understand the urgency of protecting fish and the fish habitat and have made significant changes to the design of the inlet/outlet system through which water flows into and out of Georgian Bay. We located the inlet/outlet structures in deep water, about 800 metres away from the shoreline, to avoid important fish and shoreline habitat. The inlet/outlet design also incorporates screens and very slow water movement to prevent fish from entering the structures. We have been conducting extensive seasonal aquatic studies since the fall of 2020 to establish an ideal inlet/outlet location that minimizes exposure to valuable fish habitat, and also ensuring mitigation measures, such as screens and water flows, are effective at protecting fish.

Based on extensive research and when compared with other pumped storage projects around the world, we expect there will be no detectable change in water temperature.

The Ontario Pumped Storage Project does not use water for cooling or to produce steam; it simply uses changes in elevation and gravity to move water to and from Georgian Bay and the upper reservoir without treatment or alteration.

We are conducting comprehensive computer modelling studies to validate that the design avoids negative environmental effects to Georgian Bay. We expect the modelling studies will be complete by 2023 and will share the results, which will be included in the environmental impact assessment for public review and feedback.

The Ontario Pumped Storage Project will not create lakebed turbidity because its innovative design ensures water will flow through multiple, raised, deep water lakebed inlet and outlet ports at a very slow speed, similar to Georgian Bay’s natural currents.

Multiple raised inlet/outlet ports are designed to flow water horizontally, 360 degrees, to be consistent with the natural environment and water currents in Georgian Bay, preventing disturbance of lakebed sediment.

Computer modelling and sediment mapping are an important part of our studies, which are being prepared to confirm the water flow patterns will avoid creating turbidity as a result of Project operation. The results will be included in the environmental impact assessment for public review and feedback.