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.
Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.
The capacity and fuel fields on this page are source-record values from the upstream open dataset. They are useful for identification and ranking, but they have not been upgraded to a 2026 registry/GEM-location verified value.
capacity: GEM GOGPT; fuel: GEM GOGPT
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.
Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).
Operated by Genesis Energy Ltd [100%].
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).
For a plant’s outdoor hardware — heat-recovery steam generators (HRSG), expansion joints, valves, flanges and their insulation — the local climate sets how fast unprotected steel and coatings degrade. This site sits in a corrosive environment (estimated ISO 9223 class C4 — High), with humidity / wetness the leading environmental stress.
Higher environmental severity is exactly where protective removable insulation pays back most: a sheltered micro-climate slows corrosion, UV and thermal-cycling damage and extends outdoor hardware service life. This is an indicative site-climate context — not a condition assessment of any specific plant or operator.
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.
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.
Coordinates -37.54447, 175.148805 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Huntly power station is a 454 MW gas power plant in Waikato, New Zealand, commissioned in 2004.
Its output is enough to supply roughly 511,333 homes (estimated).
Huntly power station is operated by Genesis Energy Ltd [100%].
