Marmora — Canada

Marmora is a 1 MW hydro power plant in Ontario, Canada. It ranks #1205 of 1,210 Canada power plants by installed capacity. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, hydro supplies about 52.8% of Canada's electricity; the national grid averages 191 gCO₂/kWh (77.0% low-carbon) (2025).

Plant data: WRI Global Power Plant Database (CC BY 4.0), id CAN0008090.

Data provenance

Capacity and fuel are the upstream open-dataset record, not yet matched to a 2026 registry or GEM entry.

capacity: WRI GPPD; fuel: WRI GPPD

In context: how this plant compares

At 1 MW, Marmora is below the median hydro plant in Canada (12 MW). Technically it is described as pumped storage. Its current lifecycle status is “Shelved” — so it is not yet, or no longer, generating at full output. Hydropower converts the energy of falling or flowing water into electricity; output depends on rainfall and reservoir level, and large dams also provide grid balancing and storage.

Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.

How it compares & nearby plants

The #554 largest hydro power plant of 556 in Canada by capacity.

Canada has 556 hydro power plants in this dataset, together about 81,037 MW of capacity.

Nearby power plants

• Healey Falls · Hydro · 18 MW · Ontario
• Crowe Bay · Hydro · 2 MW · Ontario
• Campbellford · Hydro · 2 MW · Ontario
• Seymour · Hydro · 6 MW · Ontario
• Ranney Falls · Hydro · 10 MW · Ontario
• Hagues Reach · Hydro · 4 MW · Ontario

Location

Coordinates 44.4851, -77.6876 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

Frequently asked questions