World Power Plants

Karapiro is a 96 MW hydro power plant in New Zealand, operated by Mercury Energy since 1947. Ranked #11 of 24 hydro plants in New Zealand. Its 96 MW represents 2.19% of New Zealand's total hydro capacity of 4,388 MW. The largest hydro plant in New Zealand is Manapouri at 800 MW, making Karapiro 8.3 times smaller. Nearby plants within 50 km include Huntly (500 MW, Coal), Huntly (403 MW, Gas), and Maraetai (352 MW, Hydro). The facility is located in the Waikato region, approximately 150 km south of Auckland.

Capacity
96 MW
Commissioning Year
1947

79 years old

Owner
Mercury Energy
Location
-37.9243°, 175.5393°

New Zealand, Oceania

Context & rankings
  • 20. largest of 43 plants in New Zealand
  • #10,510 worldwide by installed capacity
  • #2,364 of 8,493 Hydroelectric plants worldwide
  • 1.44% of the installed capacity of New Zealand
Age & fleet comparison

79 years in operation

Hydroelectric fleet average: 42.1 years

Operator portfolio

Mercury Energy operates 12 plants totalling 1,434 MW

Regional density

18 plants within 100 km, 2,591 MW combined

Nearest plant: Arapuni (18.7 km)

Data provenance

Location

Coordinates:: -37.924300, 175.539300
Open in Google Maps
Carbon Footprint

Zero Direct Emissions

Karapiro is a hydro power plant producing approximately 336 GWh of clean electricity per year with zero direct CO₂ emissions during operation.

Lifecycle emissions: ~24 g CO₂/kWh (manufacturing, transport, decommissioning)

Technical Details

Primary Fuel Type
Hydro
Energy Source
Renewable
Country
New Zealand
Continent
Oceania
Data Source
Global Power Plant Database

New ZealandEnergy Profile

43
Total Plants
6.7 GW
Total Capacity
HydroGeothermalGasCoal
Top Fuels

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