A power station, also referred to as a power plant and sometimes generating station or generating plant, is an industrial facility for the generation of electric power. Power stations are generally connected to an electrical grid.
The Rankine cycle is an idealized thermodynamic cycle describing the process by which certain heat engines, such as steam turbines or reciprocating steam engines, allow mechanical work to be extracted from a fluid as it moves between a heat source and heat sink. The Rankine cycle is named after William John Macquorn Rankine, a Scottish polymath professor at Glasgow University.
A thermal power station is a type of power station in which heat energy is converted to electrical energy. In a steam-generating cycle heat is used to boil water in a large pressure vessel to produce high-pressure steam, which drives a steam turbine connected to an electrical generator. The low-pressure exhaust from the turbine enters a steam condenser where it is cooled to produce hot condensate which is recycled to the heating process to generate more high pressure steam. This is known as a Rankine cycle.
Mercury NZ Limited is a New Zealand electricity generation and multi-product utility retailer of electricity, gas, broadband and mobile telephone services. All the company's electricity generation is renewable.
The steam-electric power station is a power station in which the electric generator is steam driven. Water is heated, turns into steam and spins a steam turbine which drives an electrical generator. After it passes through the turbine, the steam is condensed in a condenser. The greatest variation in the design of steam-electric power plants is due to the different fuel sources.
Ohakuri is a dam and hydroelectric power station on the Waikato River, central North Island, New Zealand, midway between Taupo, Rotorua and Hamilton. Its dam is about 5 kilometres (3.1 mi) upstream of the Atiamuri Dam.
The Huntly Power Station is the largest thermal power station in New Zealand and is located in the town of Huntly in the Waikato. It is operated by Genesis Energy Limited, a publicly listed company. The station has five operational generating units – three 250 MW coal-and-gas-fired steam turbine units, a 50 MW gas peaking plant, and a 403 MW combined cycle gas turbine plant. The station also plays an important role in voltage support for the Northland, Auckland and Waikato regions.
The Kawerau Power Station is a 100-megawatt geothermal power plant located just outside the town of Kawerau in the Bay of Plenty Region of New Zealand. The power station is situated within the Kawerau geothermal field, which is part of the Taupo Volcanic Zone. Completed in July 2008 by Mighty River Power at a cost of NZ$300 million, the plant's capacity proved greater than expected. The station is the largest single generator geothermal plant in New Zealand.
Geothermal power is electrical power generated from geothermal energy. Technologies in use include dry steam power stations, flash steam power stations and binary cycle power stations. Geothermal electricity generation is currently used in 26 countries, while geothermal heating is in use in 70 countries.
Geothermal power in New Zealand is a small but significant part of the energy generation capacity of the country, providing approximately 17% of the country's electricity with installed capacity of over 900MW. New Zealand, like only a small number of other countries worldwide, has numerous geothermal sites that could be developed for exploitation, and also boasts some of the earliest large-scale use of geothermal energy in the world.
The Stratford Power Station is a 577 MW power station located east of Stratford, in Taranaki, New Zealand. The original power station on the site was a 200 MW gas turbine power plant that opened in 1976 and closed in 2001. The current power station comprises a 377 MW combined cycle unit that opened in 1998 and two open cycle gas turbine units for peaking power that opened in 2011. The station is now owned and operated by Contact Energy.
Hauāuru mā raki is a proposed wind farm development on the Waikato coast of New Zealand.
The Otahuhu power station was a power station site located in Otara, Auckland, New Zealand. Two plants operated on the site: Otahuhu A and Otahuhu B. A proposed third station, Otahuhu C, was never built. The stations were owned by Contact Energy.
The Te Huka Geothermal Power Station, also known as Tauhara One, is a 23 MW binary cycle geothermal power station situated near Taupo, New Zealand. The power station is operated by Contact Energy.
The Te Mihi Power Station is a 166 MW geothermal power station owned and operated by Contact Energy, located north of Taupo in New Zealand.
The Wairakei Power Station is a geothermal power station near the Wairakei Geothermal Field in New Zealand. Wairakei lies in the Taupo Volcanic Zone.
The Poihipi Power Station is a geothermal power station owned and operated by Contact Energy. It is located on Poihipi Road near Taupo in New Zealand.
The Svartsengi Power Station is a geothermal power plant, which is located in the Svartsengi geothermal field, about four km north of Grindavík, approximately 20 km SE of Keflavík International Airport and 45 km from Reykjavík. The electric power station was built in 1976 by the subsidiary of Alterra Power, HS Orka and it was the world´s first geothermal power plant for electric power generation and hot water production for district heating.
The Tauhara Power Station is a geothermal power station north of Taupo in New Zealand. Previously known as Tauhara 2, the project is being developed by Contact Energy and Tauhara Moana Trust and is expected to be fully operational by late 2023.
The Pauzhetskaya power station is located in the south-western part of the Kamchatka Peninsula, 30 kilometres (19 mi) east of Ozernovskij settlement, located on the coast of the Okhotsk Sea. The geothermal power plant was put into operation in 1966. The power plant has two 6 MW turbines of direct cycle and 2.5 MW binary turbine. The first steam turbine is designed for an inlet pressure of 1.2 bars and a steam flow rate of 24.2 kg/s. The second steam turbine is designed for an inlet pressure of 2.2 bars and a steam flow rate of 25.8 kg/s. The binary turbine is designed for a separated water flow rate of 118 kg/s at 120 °C. Presently, one steam turbine is in operation, while the other steam turbine is a reserve.
