Glenbrook power station — New Zealand
Gas power plant in Auckland, New Zealand. Approximate location -37.201568, 174.755057.
GasAucklandNew ZealandCCGT · HRSG
Glenbrook power station is a 112 MW gas power station in Auckland, New Zealand. It is operated by Alinta Energy Pty Ltd [100%]. Based on its capacity (estimated), it can supply roughly 126k homes (estimated). It ranks #20 of 50 New Zealand power plants by installed capacity. Commissioned in 1987, it is around 39 years old — long-established. 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_glenbrook_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
Source of the capacity and fuel values:
capacity: GEM · 2026 · L100000407928; fuel: GEM GOGPT
In context: how this plant compares
At 112 MW, Glenbrook power station is around 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
- 4.9% of 2,290 MW across 10 plants in this dataset
- Age among peers
- 0 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 Alinta Energy Pty 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 37.2°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 an aggressive, high-corrosion environment (estimated ISO 9223 class C5 — Very high), with marine salt corrosion 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 #5 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 power station · Gas · 454 MW · Waikato
- 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
Location
Coordinates -37.201568, 174.755057 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Frequently asked questions
What type of power plant is Glenbrook power station?
Glenbrook power station is a 112 MW gas power plant in Auckland, New Zealand, commissioned in 1987.
Who operates Glenbrook power station?
Glenbrook power station is operated by Alinta Energy Pty Ltd [100%].