Cethana — Australia

Cethana is a 100 MW hydro power station in Tasmania, Australia. It ranks #182 of 536 Australia power plants by installed capacity. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, hydro supplies about 4.3% of Australia's electricity; the national grid averages 525 gCO₂/kWh (38.6% low-carbon) (2025).

Plant data: WRI Global Power Plant Database (CC BY 4.0), id AUS0000144.

Capacity provenance

The public capacity above is a source-verified 2026 capacity claim: 100 MW for Cethana hydroelectric plant.

GEM · 2026 · operating plant capacity

Data provenance

Source of the capacity and fuel values:

capacity: GEM · 2026 · L100000600057; fuel: WRI GPPD

In context: how this plant compares

At 100 MW, Cethana is well above the median hydro plant in Australia (45 MW). Technically it is described as pumped storage. Its current lifecycle status is “Pre Construction” — 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 #17 largest hydro power plant of 73 in Australia by capacity.

Australia has 73 hydro power plants in this dataset, together about 8,878 MW of capacity.

Nearby power plants

• Wilmot · Hydro · 81.6 MW · Tasmania
• Lemonthyme · Hydro · 81.6 MW · Tasmania
• Devils Gate · Hydro · 60 MW · Tasmania
• Paloona · Hydro · 32 MW · Tasmania
• Fisher · Hydro · 46 MW · Tasmania
• Rowallan · Hydro · 10.5 MW · Tasmania

Location

Coordinates -41.4787, 146.1349 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

Frequently asked questions