Geothermal systems occur in several parts of New Zealand. Higher temperature geothermal fields are principally located in the Taupo Volcanic Zone, with a different high temperature field at Ngawha in Northland. Moderate to low and very low temperature systems are a lot more broadly scattered. Some are related with locations of young volcanism: in Northland, Hauraki Plains, and the coastal Bay of Lots. A lot of hot springs, specifically in the South Island, are associated with faults and tectonic features.
They also point to the development of hydraulic fracturing technologies that could be utilized to harness geothermal energy previously thought to be unreachable. But according to Randy Keller — director of improvement for CalEnergy, which owns ten of the 11 plants by the Salton Sea — classic technology is more than excellent adequate to tap the huge quantities of energy lying in wait near the sea.
According to the Geothermal Power Association (GEA) , the geothermal energy sector reached about three,442 MW at the finish of 2013. Add to this about 1,000 MW of planned capacity additions beneath improvement and about 3,one hundred MW of geothermal energy sources below improvement. The industry’s US additions in 2013 added about 85 MW of new capacity at new and refurbished energy plants in Utah, Nevada, California, and New Mexico.
EnergySource, which opened the 11th geothermal plant by the Salton Sea in 2012, scrapped plans for a second facility earlier this year when unsatisfactory drilling outcomes indicated the plant would not be economically viable. CalEnergy has been sitting on a permit for a huge new Salton Sea plant for 4 years, but it hasn’t been capable to secure a energy purchase agreement with a utility — a important step prior to building can start.
The Kawerau geothermal field is positioned promptly east of Kawerau township. Most of the surface thermal attributes are believed to have been in a all-natural state of decline prior to improvement, which arose from the energy specifications of the large Tasman pulp and paper processing plant constructed in the 1950s. Till the commissioning of the Ohaaki energy station at Broadlands-Ohaaki, Kawerau was the second biggest generating field in New Zealand and its steam supply for industrial use equates to half of the world’s total steam supply for industrial applications.