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- If the rising hot water meets an extensively fractured or permeable rock zone, the heated water will fill pores and fractures and form a geothermal reservoir. These reservoirs are much hotter than surface hot springs, reaching more than 350°C, and are potentially an accessible source of energy.
www.nzgeothermal.org.nz/geothermal-in-nz/what-is-geothermal/
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Many undisturbed geothermal reservoirs in New Zealand have temperature and pressure profiles where fluid is close to boiling point to depths of more than 1 km. Geothermal areas are commonly close to the edges of continental plates.
- New Zealand Geothermal Fields
Geothermal systems occur in many parts of New Zealand. High...
- New Zealand Geothermal Fields
- Orakei Korako. Known as “The Hidden Valley”, Orakei Korako features caves, springs and silica formations among other geothermal wonders. The highlight of the valley is a variety of silica terraces, such as the Golden Fleece Terrace with its bronze and golden(ish) steaming terraces.
- Wai-O-Tapu Thermal Wonderland. “Out of this world” is the best way to describe Wai-O-Tapu. The iconic Champagne Pool, the Devil’s Bath and the huge bubbling mud pools are a window to the inner workings of the planet.
- Waimangu Volcanic Valley. On 10 June 1886, the Tarawera volcano erupted destroying all life in the area. With that, the volcanic area grew 20 times larger and formed the Waimangu Volcanic Valley.
- Te Puia. Te Whakarewarewa Geothermal Valley was once home to a Maori pā (fortified village) called Te Puia. It is now a great cultural attraction mixing Maori culture and geothermal features.
Geothermal energy constitutes New Zealand's second-largest renewable electricity source, with the North Island estimated to have a potential of 1,000 MW for power generation. However, full exploitation may be constrained by economic, environmental, and social considerations.
New Zealand has an abundant supply of geothermal energy because we are located on the boundary between two tectonic plates. The crust is thin along this rift and supports at least 23 distinct geothermal plumes or fields.
Aug 9, 2023 · Most geothermal use in New Zealand has occurred in the Taupo and Kawerau regions, within the Taupo Volcanic Zone. Some lower temperature geothermal has a wider geographical spread (see map figure below).
Geothermal systems occur in many parts of New Zealand. High temperature geothermal fields are principally located in the Taupō Volcanic Zone, with another high temperature field at Ngawha in Northland. Moderate to low and very low temperature systems are more widely scattered.
The Ngāwhā geothermal field is the only high temperature geothermal resource in New Zealand, outside the Taupo Volcanic Zone. It has few natural surface features, apart from the springs adjacent to Ngāwhā Springs Village which, although modest in flow, are highly valued for their cultural and therapeutic properties.
