WORLDKINGS - Worldkings News - Australia Records Institute (AURI) – Ngatamariki Power Station: World's largest singular binary power plant

04-09-2020

(Worldkings.org) Ngatamariki Power Station is the world's largest singular binary power plant. The power station is a binary plant, supplied under an EPC contract by Ormat. A 220,000-volt power line connects Ngatamariki to Mercury's Nga Awa Purua Power Station, where electricity from both stations is injected into Transpower's national grid.

Ngatamariki is a geothermal power station commissioned in 2013 and operated by Mercury Energy. It is located approximately 17 km north east of Taupo and was constructed well under the budget of $475 million.

The field was initially explored by the Crown in 1985-86, with the wells NM1, NM2, NM3, and NM4 drilled to 1300m, 2403m, 2194m, and 2749m respectively. NM4 was the first well in New Zealand to encounter a pluton, at a depth of almost 2400m.

Mighty River Power undertook further drilling in 2008-09, with wells NM5, NM6, and NM7 drilled to depths of 2997m, 3398m, 2963m respectively. The 100MW Ngatamariki geothermal power plant is touted as the world's largest singular binary power plant.

Work at the geothermal field site on the first stage of the plant (82 MW) commenced in July 2011 and the plant became operational in September, 2013, one month later than scheduled. The power station is a binary plant, supplied under an EPC contract by Ormat.

A 220,000-volt power line connects Ngatamariki to Mercury's Nga Awa Purua Power Station, where electricity from both stations is injected into Transpower's national grid.

The Ngatamariki Geothermal site consists of 7 geothermal wells (3 production and 4 re-injection). In addition to the main goethermal wells, there are 21 sentinel and monitoring wells, to depths of 1,500m.

According to en.wikipedia


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