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Maraetai Power Station information


Maraetai Power Station
Maraetai Power Station is located in New Zealand
Maraetai Power Station
Location of Maraetai Power Station in New Zealand
CountryNew Zealand
Locationnear Mangakino, Waikato
Coordinates38°21′9″S 175°44′38″E / 38.35250°S 175.74389°E / -38.35250; 175.74389
StatusOperational
Construction began1946 (1946)
Opening dateSeptember 1953 (September 1953)
Owner(s)Mercury Energy
Dam and spillways
Type of damArch dam
ImpoundsWaikato River
Height87 m (285 ft)
Length133 m (436 ft)
Width (crest)11 m (36 ft)
Width (base)15.2 m (50 ft)
Spillways1
Reservoir
CreatesLake Maraetai
Surface area4.1 km2 (1.6 sq mi)
Commission dateSeptember 1953 (Maraetai I)
February 1971 (Maraetai II)
TypeConventional
Hydraulic head61 m (200 ft)
Turbines10 × Francis
Installed capacity360 MW
Annual generation885 GWh

Maraetai Power Station is a hydroelectric power station on the Waikato River, in the North Island of New Zealand. It is the fifth of the eight hydroelectric power stations on the Waikato River, and at 360 MW, is the largest hydroelectric station on the Waikato.

The station has two powerhouses - Maraetai I powerhouse is directly in front of the Maraetai Dam, while Maraetai II powerhouse is located 550 metres (1,800 ft) downstream of Maraetai I. Although both are completely separate, both powerhouses are operated as one power station.

Maraetai is owned and operated by Mercury Energy.

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