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Whirinaki

Oil power plant in Hawke's Bay, New Zealand. Approximate location -39.3829, 176.8875.

OilHawke's BayNew Zealand

Whirinaki is a 155 MW oil power station in Hawke's Bay, New Zealand. It is operated by Contact Energy. Based on its capacity (estimated), it can supply roughly 116,382 homes (estimated). It ranks #11 of 43 New Zealand power plants by installed capacity. Commissioned in 2011, it is around 15 years old — relatively modern. In context, oil supplies about 1.5% of New Zealand's electricity; the national grid averages 93 gCO₂/kWh (88.5% low-carbon) (2025).

155MW installed capacity
116,382homes powered (est.)
2011commissioned (~15 yrs)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id WRI1000337.

~305,505 t CO₂/yr (estimated) — in everyday terms

This facility's annual emissions are roughly equivalent to:

71,213passenger cars driven for a year
39,842homes' yearly energy use
5,091,750tree 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.

Owner

Operated by Contact 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 temperate oceanic climate (Köppen Cfb) — Southern Hemisphere, latitude 39.4°S — which shapes how much energy it can produce and how its output varies through the year.

13.8°Cannual mean temp
1,569heating degree-days (base 18°C)
32cooling degree-days (base 18°C)
53 melevation

Monthly mean temperature

J: 19 °CJF: 18 °CFM: 17 °CMA: 14 °CAM: 12 °CMJ: 10 °CJJ: 9 °CJA: 10 °CAS: 12 °CSO: 13 °CON: 15 °CND: 17 °CD19 °C

Heating degree-days here run 36% 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: 35/100 — 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.

How it compares & nearby plants

New Zealand has 1 oil power plant in this dataset, together about 155 MW of capacity.

Nearby power plants

Location

Coordinates -39.3829, 176.8875 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

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