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New Zealand — Energy Infrastructure

OverWatts maps 145 energy assets in New Zealand across 9 layers — the 51st-largest mapped base of 157 countries. They include 98 power plants, 24 coal / uranium mines and 7 oil & gas fields. Operating generation capacity is 8.6 GW, led by hydro at 51%.

The companies named on the most assets are Bathurst Resources Ltd (15), Meridian Energy (14) and Contact Energy Ltd (13), counting both ownership and operatorship. Half of New Zealand's mapped assets in service predate 1985 (median commissioning year of the 55 with a known date), 6 came online in the past decade and the oldest still listed is Awaroa Coal Mine, dating from 1915. 40+ projects are under construction or proposed, led by South Taranaki Bight (Taranaki Offshore Partners) offshore wind farm (2.0 GW).

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145
Total assets
#51
of 157 countries
8.6 GW
operating · 98 power plants
40
In construction / proposed

Operating generation capacity by fuel

Utility-scale sites of 100 MW and above. Distributed generation — rooftop solar especially — is outside the tracker, so this runs below national installed capacity.

Electricity generated by fuel · 2025

What the fleet actually produced — distinct from the installed capacity above.

Total 43.3 TWhDemand 43.3 TWhClean 89%Intensity 93 gCO₂/kWh

Ember · source · CC-BY-4.0

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Browse by asset class

Power grid 6,451 kmPower Plants 98Coal & Uranium Mines 24Oil & Gas Fields 7Export Terminals 5Pipelines 4Cement Plants 2Chemical Plants 2Iron Ore Mines 2Iron & Steel Plants 1

Under construction & proposed

Largest assets

Biggest owners & operators

Counts an asset once per company named as its owner or operator; a joint venture counts for each partner.

Frequently asked

How many energy assets does New Zealand have?
OverWatts maps 145 in New Zealand across 9 asset classes — the 51st-largest mapped base of the 157 countries covered.
How much electricity generation capacity does New Zealand have?
About 8.6 GW operating across 36 plants, mostly hydro 51%, coal 14% and geothermal 13%.
Who owns New Zealand's energy infrastructure?
Bathurst Resources Ltd is named as owner or operator on the most mapped assets (15), followed by Meridian Energy (14), Contact Energy Ltd (13) and Genesis Energy Ltd (11).
What energy projects are under construction in New Zealand?
The largest under way or proposed are South Taranaki Bight (Taranaki Offshore Partners) offshore wind farm (2.0 GW), South Taranaki Bight (Energy Quarry Zealandia) offshore wind farm (1.0 GW) and South Taranaki Bight (Oceanex) offshore wind farm (1.0 GW).