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Omanawa Falls Power Station
The Omanawa Falls Power Station is a run of the river hydroelectric facility on the Omanawa River, in the Bay of Plenty in New Zealand. Built in 1915 to supply electricity to the town of Tauranga, it was the Southern Hemisphere's first underground power station. History Development The first power station in the Bay of Plenty were the Okere Falls Power Station on the Kaituna River which was commissioned in 1901. The Water Power Act 1903, vested the rights to generate electricity in the Crown. The Public Works Act of 1908 consolidated the control of hydro-electric development by both central and local development, though the act was amended in that same year to allow private companies to generate electricity within strict conditions. The first decade of the 20th century witnessed the development of a number of hydroelectric schemes by various local authorities. Aware of the possibilities that electricity offered the B. C. Robbins, the Mayor of the Tauranga Borough Council en ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Omanawa River
The Omanawa River is a river of the Bay of Plenty Region of New Zealand's North Island. The New Zealand Ministry for Culture and Heritage gives a translation of "place of Manawa" for ''Ōmanawa''. An important tributary of the Wairoa River it flows north from the northern edge of the Mamaku Plateau, through a valley to enter a long narrow gorge through which the river flows in a series of rapids before above the confluence with the Wairoa the river drops 35 metres over the Omanawa Falls. At the base of the falls is a large deep pool approximately 100 metres in diameter. At the back and under the lip of the falls, the river has hollowed out a huge cavern. To one side of the falls is the Omanawa Falls Power Station which is powered by water diverted around the falls. The Omanawa joins the Wairoa River about from its mouth and southwest of Tauranga. See also *List of rivers of New Zealand This is a list of all waterways named as rivers in New Zealand. A * Aan River * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bay Of Plenty
The Bay of Plenty ( mi, Te Moana-a-Toi) is a region of New Zealand, situated around a bight of the same name in the northern coast of the North Island. The bight stretches 260 km from the Coromandel Peninsula in the west to Cape Runaway in the east. The Bay of Plenty Region, governed by the Bay of Plenty Regional Council, incorporates several large islands in the bay, in addition to the mainland area. Called ''Te Moana-a-Toi'' (the Sea of Toi) in the Māori language after Toi, an early ancestor, the name 'Bay of Plenty' was bestowed by James Cook in 1769 when he noticed the abundant food supplies at several Māori villages there, in stark contrast to observations he had made earlier in Poverty Bay. History According to local Māori traditions, the Bay of Plenty was the landing point of several migration canoes that brought Māori settlers to New Zealand. These include the ''Mātaatua'', ''Nukutere'', ''Tākitimu'', '' Arawa'' and ''Tainui'' canoes. Many of the de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trustpower
Manawa Energy Limited, formerly Trustpower, is a New Zealand electricity generation company that offers bespoke electricity products to commercial and industrial customers across New Zealand. Manawa Energy has 26 hydro-electricity schemes, with a total of 47 power stations and is New Zealand's fifth largest electricity generator (in MW capacity, GWh output and revenue). The company is listed on the New Zealand stock exchange, but its ownership structure is dominated by its two major shareholders: Infratil which owns 51.0% and the Tauranga Energy Consumer Trust (TECT) which owns 26.8%. The remaining 22.2% is widely held. The company changed its name to Manawa Energy following the 2022 sale of its mass market retail business, retail customer base and the Trustpower brand to Mercury Energy. History Tauranga city In 1913, the Tauranga Borough Council applied to the Department of Lands to have the Omanawa Falls vested in their body corporate for the purposes of water power generat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydroelectric
Hydroelectricity, or hydroelectric power, is electricity generated from hydropower (water power). Hydropower supplies one sixth of the world's electricity, almost 4500 TWh in 2020, which is more than all other renewable sources combined and also more than nuclear power. Hydropower can provide large amounts of low-carbon electricity on demand, making it a key element for creating secure and clean electricity supply systems. A hydroelectric power station that has a dam and reservoir is a flexible source, since the amount of electricity produced can be increased or decreased in seconds or minutes in response to varying electricity demand. Once a hydroelectric complex is constructed, it produces no direct waste, and almost always emits considerably less greenhouse gas than fossil fuel-powered energy plants. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New Zealand
New Zealand ( mi, Aotearoa ) is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and over 700 smaller islands. It is the sixth-largest island country by area, covering . New Zealand is about east of Australia across the Tasman Sea and south of the islands of New Caledonia, Fiji, and Tonga. The country's varied topography and sharp mountain peaks, including the Southern Alps, owe much to tectonic uplift and volcanic eruptions. New Zealand's capital city is Wellington, and its most populous city is Auckland. The islands of New Zealand were the last large habitable land to be settled by humans. Between about 1280 and 1350, Polynesians began to settle in the islands and then developed a distinctive Māori culture. In 1642, the Dutch explorer Abel Tasman became the first European to sight and record New Zealand. In 1840, representatives of the United Kingdom and Māori chiefs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tauranga
Tauranga () is a coastal city in the Bay of Plenty region and the fifth most populous city of New Zealand, with an urban population of , or roughly 3% of the national population. It was settled by Māori late in the 13th century, colonised by Europeans in the early 19th century, and was constituted as a city in 1963. The city lies in the north-western corner of the Bay of Plenty, on the south-eastern edge of Tauranga Harbour. The city extends over an area of , and encompasses the communities of Bethlehem, New Zealand, Bethlehem, on the south-western outskirts of the city; Greerton, on the southern outskirts of the city; Matua, west of the central city overlooking Tauranga Harbour; Maungatapu; Mount Maunganui, located north of the central city across the harbour facing the Bay of Plenty; Otūmoetai; Papamoa, Tauranga's largest suburb, located on the Bay of Plenty; Tauranga City; Tauranga South; and Welcome Bay. Tauranga is one of New Zealand's main centres for business, interna ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Okere Falls Power Station
Okere Falls Power Station is a hydroelectric power station that came into production in May 1901, bringing electricity to Rotorua. At the time, Rotorua was only the fourth town in New Zealand to have electricity. The power station was the first power station built by the New Zealand government, and it remained in operation until 1936. History With Rotorua's expanding tourism industry in the 19th century, demand grew for having electrical lighting. In 1897, land was secured at Okere Falls for a powerhouse, followed by a tender in 1899 to build a hydro-electric power plant.Information contained on "Power for People" information panel at the viewing platform over Okere Falls. Rotorua's demand for electricity grew rapidly and by 1907 could not be met by the existing turbine anymore. In 1908, a new wing dam out from the head gates into the river was completed, bringing in enough water to run a second turbine, doubling the station's output to . Each of the 'Waverley' horizontal turbines ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wairoa River (Bay Of Plenty)
The Wairoa River runs north into Tauranga Harbour at the western end of the Bay of Plenty in New Zealand's North Island. Hydroelectric power In the mid-1970s the Tauranga Joint Generation Committee proposed a hydroelectric power scheme for the Wairoa River. The newly formed Kaimai Canoe Club (established by Barry Anderson, Bill Ross, Kerry Smith and Peter Entwistle) opposed the scheme at the water rights headings, this was on the grounds that it would destroy fishing, sport and recreation for existing and future generations. A compromise was arrived at by allowing the release of water 26 days a year for whitewater recreation. The last dam diverts water around the river bed to the Ruahihi Power Station. TrustPower is now the manager of the power scheme on the river. - Kaimai hydro power scheme Whitewater r ...
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Lloyd Mandeno
Lloyd Mandeno (3 October 1888 – 30 December 1973) was a New Zealand electrical engineer, inventor and local politician. He was born in Rangiaowhia, Waikato, New Zealand, on 3 October 1888. He is credited with nine hydroelectric installations and numerous inventions. He served on electric power boards, regional councils and as a deputy mayor. Mandeno was born at Rangiaowhia, near Te Awamutu in the Waikato region to a farming family. He studied at St John's Collegiate School in Auckland and started at Auckland University College in 1905. The following year he transferred to Canterbury College from where he graduated in 1912 with a Bachelor of Engineering degree. He married Constance Mary Woodward at Mangere in 1913. Mandeno invented, developed and successfully promoted widespread use of "single wire earth-return" ( SWER) grids for rural electrification in New Zealand.Mandeno, L. (1947)"Rural Power Supply Especially in Back Country Areas". ''Proceedings of the New Zealand Ins ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Francis Turbine
The Francis turbine is a type of water turbine. It is an inward-flow reaction turbine that combines radial and axial flow concepts. Francis turbines are the most common water turbine in use today, and can achieve over 95% efficiency. The process of arriving at the modern Francis runner design took from 1848 to approximately 1920. It became known as the Francis turbine around 1920, being named after British-American engineer James B. Francis who in 1848 created a new turbine design. Francis turbines are primarily used for producing electricity. The power output of the electric generators generally ranges from just a few kilowatts up to 1000 MW, though mini-hydro installations may be lower. The best performance is seen when the head height is between . Penstock diameters are between . The speeds of different turbine units range from 70 to 1000 rpm. A wicket gate around the outside of the turbine's rotating runner controls the rate of water flow through the turbine for d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydroelectricity In New Zealand
Hydroelectricity, or hydroelectric power, is electricity generated from hydropower (water power). Hydropower supplies one sixth of the world's electricity, almost 4500 TWh in 2020, which is more than all other renewable sources combined and also more than nuclear power. Hydropower can provide large amounts of low-carbon electricity on demand, making it a key element for creating secure and clean electricity supply systems. A hydroelectric power station that has a dam and reservoir is a flexible source, since the amount of electricity produced can be increased or decreased in seconds or minutes in response to varying electricity demand. Once a hydroelectric complex is constructed, it produces no direct waste, and almost always emits considerably less greenhouse gas than fossil fuel-powered energy plants. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydroelectric Power Stations In New Zealand
Hydroelectricity, or hydroelectric power, is electricity generated from hydropower (water power). Hydropower supplies one sixth of the world's electricity, almost 4500 TWh in 2020, which is more than all other renewable sources combined and also more than nuclear power. Hydropower can provide large amounts of low-carbon electricity on demand, making it a key element for creating secure and clean electricity supply systems. A hydroelectric power station that has a dam and reservoir is a flexible source, since the amount of electricity produced can be increased or decreased in seconds or minutes in response to varying electricity demand. Once a hydroelectric complex is constructed, it produces no direct waste, and almost always emits considerably less greenhouse gas than fossil fuel-powered energy plants. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
