Huntly power station — New Zealand
Gas power plant in Waikato, New Zealand. Approximate location -37.54447, 175.148805.
GasWaikatoNew ZealandCCGT · HRSG
Huntly power station is a 454 MW gas power station in Waikato, New Zealand. It is operated by Genesis Energy Ltd [100%]. Based on its capacity (estimated), it can supply roughly 511k homes (estimated). It ranks #6 of 50 New Zealand power plants by installed capacity. Commissioned in 2004, it is around 22 years old — relatively modern. In context, gas supplies about 8.9% of New Zealand's electricity; the national grid averages 93 gCO₂/kWh (88.5% low-carbon) (2025).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id GOGPT_huntly_newzea.
Data status
Known data
Calculated from dataset
Not available
Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.
Data provenance
Capacity and fuel are the upstream open-dataset record, not yet matched to a 2026 registry or GEM entry.
capacity: GEM GOGPT; fuel: GEM GOGPT
In context: how this plant compares
At 454 MW, Huntly power station is well above the median gas plant in New Zealand (112 MW). Technically it is described as CCGT; combined-cycle with a heat-recovery steam generator (HRSG). Gas plants burn natural gas either in open-cycle turbines for fast peaking, or in combined-cycle units that recover exhaust heat in an HRSG to reach roughly 55–62% efficiency — the cleanest-burning fossil option.
Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.
Key facts
- Share of New Zealand gas capacity
- 19.8% of 2,290 MW across 10 plants in this dataset
- Age among peers
- 3 of 9 dated gas plants in New Zealand are older
Calculated from the capacity and generation records in this dataset (WRI Global Power Plant Database (CC BY 4.0)).
Capacity vs largest gas plants in New Zealand
Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).
Owner
Operated by Genesis Energy Ltd [100%].
Climate zone & how it works
This gas plant burns natural gas in a turbine — often in a combined-cycle setup — to generate electricity. It sits in a temperate oceanic climate (Köppen Cfb) — Southern Hemisphere, latitude 37.5°S — which shapes how much energy it can produce and how its output varies through the year.
Climate zone & typical temperatures: Köppen-Geiger world climate classification (Kottek et al. 2006, 0.5° grid).
Site climate & environmental severity
This site sits in a corrosive environment (estimated ISO 9223 class C4 — High), with humidity / wetness the leading environmental stress.
Indicative estimate via the ISO 9223:2012 informative method (atmospheric corrosivity from temperature, time-of-wetness and airborne salinity), using WorldClim climate normals, the Köppen-Geiger class and coast distance. Indicative, not a measured corrosion rate.
How it compares & nearby plants
The #2 largest gas power plant of 10 in New Zealand by capacity.
New Zealand has 10 gas power plants in this dataset, together about 2,290 MW of capacity.
Nearby power plants
- Huntly (CC) · Gas · 403 MW · Waikato
- Huntly (steam) · Coal · 500 MW · Waikato
- Huntly (unit 6) · Gas · 60 MW · Waikato
- Te Rapa · Gas · 44 MW · Waikato
- Te Uku · Wind · 64 MW · Waikato
- Glenbrook power station · Gas · 112 MW · Auckland
Location
Coordinates -37.54447, 175.148805 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Frequently asked questions
What type of power plant is Huntly power station?
Huntly power station is a 454 MW gas power plant in Waikato, New Zealand, commissioned in 2004.
Who operates Huntly power station?
Huntly power station is operated by Genesis Energy Ltd [100%].