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Roy Hill

Oil power plant in Western Australia, Australia. Approximate location -22.4812, 119.9472.

OilWestern AustraliaAustralia

Roy Hill is a 6 MW oil power plant in Western Australia, Australia. It is operated by Alinta Energy. Based on its capacity (estimated), it can supply roughly 4,505 homes (estimated). It ranks #397 of 512 Australia power plants by installed capacity. In context, oil supplies about 2.2% of Australia's electricity; the national grid averages 525 gCO₂/kWh (38.6% low-carbon) (2025).

6MW installed capacity
4,505homes powered (est.)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id AUS0000490.

~11,826 t CO₂/yr (estimated) — in everyday terms

This facility's annual emissions are roughly equivalent to:

2,757passenger cars driven for a year
1,542homes' yearly energy use
197,100tree seedlings grown 10 years to absorb it

Estimated, not measured: from installed capacity at a typical 30% load factor × a typical oil emission factor (~750 g CO₂/kWh, IPCC AR5 / US EIA). Actual emissions depend on plant efficiency and running hours.Equivalencies via US EPA Greenhouse Gas Equivalencies.

Capacity vs largest oil plants in Australia

Mount Stuart: 423 MW423Mount Stua…Solomon Hub mine power station: 136 MW136Solomon Hu…GOVE PENINSULA: 120 MW120GOVE PENIN…HEZ Energy Peaking Power Plant: 120 MW120HEZ Energy…Port Lincoln: 74 MW74Port Linco…West Kalgoorlie: 60 MW60West Kalgo…Christmas Creek Iron Ore Mine: 58 MW58Christmas …Port Stanvac: 58 MW58Port Stanv…

Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).

Owner

Operated by Alinta Energy. All plants by this company →

Local climate & thermal context

This oil plant burns oil or diesel to drive turbines or reciprocating engines. It sits in a hot desert climate (Köppen BWh) — Southern Hemisphere, latitude 22.5°S — which shapes how much energy it can produce and how its output varies through the year.

25.3°Cannual mean temp
72heating degree-days (base 18°C)
2,728cooling degree-days (base 18°C)
443 melevation

Monthly mean temperature

J: 33 °CJF: 31 °CFM: 30 °CMA: 26 °CAM: 21 °CMJ: 17 °CJJ: 16 °CJA: 18 °CAS: 22 °CSO: 27 °CON: 30 °CND: 32 °CD33 °C

Heating degree-days here run 97% below 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: 14/100 — this site sits in the bottom 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.

How it compares & nearby plants

The #23 largest oil power plant of 46 in Australia by capacity.

Australia has 46 oil power plants in this dataset, together about 1,476 MW of capacity.

Nearby power plants

Location

Coordinates -22.4812, 119.9472 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

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