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ManapÅuri Power Station is an underground hydroelectric power station on the western arm of Lake Manapouri in Fiordland National Park, in the South Island of New Zealand. At 854 MW installed capacity (although limited to 800 MW due to resource consent limits [ 3 ] ), it is the largest hydroelectric power station in New Zealand, and the second ...
Graph of New Zealand electricity generation capacity by year. This is a list of power stations in New Zealand. The list is not exhaustive – only power stations over 0.5 MW and significant power stations below 0.5 MW are listed. Power plants in New Zealand have different generating roles – for baseload, intermediate or peaking.
The first nationwide environmental campaign in New Zealand was opposition to raising Lake Manapouri for a power station to supply electricity to the Tiwai Point Aluminium Smelter. The Save Manapouri Campaign was a success and the power station was built without raising the level of the lake outside of its natural range.
The Manapouri Hydroelectric Power Station is located on the West Arm of Lake Manapouri, with most of the electricity generated serving the Tiwai Point Aluminium Smelter Workers at the power plant are ferried by boat from Manapouri, as there is no road access to the power station. Manapouri was declared the "highest consumer of water" in New ...
Manapouri Power Station is a single underground power station in Fiordland, and the largest hydroelectric station in the country. It has a maximum generating capacity of 730 MW and produces 4800 GW⋅h annually, mainly for the Tiwai Point aluminium smelter near Invercargill .
The power house is in a cavern, while two tailrace tunnels take the water from the power house 10 km (6 mi) to Deep Cove and the sea. The Manapouri Control Structure (Mararoa dam) downstream from the original outlet of Lake Manapouri controls the lake level, and feeds water from the Mararoa river back up the river into the Lake.
The smelter's power demand from the national grid is about 570 MW. Most of the energy for the smelter is supplied from the Manapouri hydroelectric power station, via two double circuit 220 kV transmission lines. The facility is the largest electricity consumer in New Zealand.
Lake Manapouri was formed by glaciers during the last Holocene. [6] The lake is New Zealand’s second deepest lake measuring 444 metres (1,457 ft) deep. [3] [7] Lake Manapouri is 178 metres (584 ft) above sea level however due to glaciers, Lake Manapouri has been cut deep into the ground and the bottom of the lake now lies 267 metres (876 ft) below sea level. [3]