John Butters is a 144 MW hydro power station in Tasmania, Australia. It is operated by Hydro-Electric Corporation (Tasmania). Based on reported annual generation of 572 GWh, it can supply roughly 163,314 homes. It ranks #116 of 512 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 AUS0000134.
Annual generation (GWh), WRI Global Power Plant Database (CC BY 4.0).
Operated by Hydro-Electric Corporation (Tasmania). All plants by this company →
This hydro plant converts the energy of falling or flowing water through hydro turbines. It sits in a temperate oceanic climate (Köppen Cfb) — Southern Hemisphere, latitude 42.2°S — which shapes how much energy it can produce and how its output varies through the year.
Monthly mean temperature
Heating degree-days here run 21% above the median power plant in this dataset — a proxy for how much extra energy heated equipment must replace through its surfaces in winter.
Climate heat-demand index: 62/100 — this site sits in the mid third of the power plants we cover by heating degree-days.
In colder climates, uninsulated hot equipment (boilers, turbines, valves, steam lines) loses proportionally more heat to ambient air — exactly the loss Inzonex modular insulation is designed to cut.
Climate normals: WorldClim 2.1 (1970–2000 monthly normals, 10 arc-min, CC BY 4.0); zone: Köppen-Geiger world climate classification (Kottek et al. 2006, 0.5° grid). Degree-days & heat-demand index computed by PowerAtlas — a modelled heat-demand proxy, not a measured site figure.
The #14 largest hydro power plant of 73 in Australia by capacity.
Australia has 73 hydro power plants in this dataset, together about 8,521 MW of capacity.
Coordinates -42.1548, 145.5345 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
