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Cobb Power Station

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995: 324:. However, they required a large supply of electricity, and proposed the development of a hydro power station on the Cobb River where it descended around 610 m (2,000 ft) in a direct line of less than 4.8 km (3 mi). The scheme was to divert water from the upper reaches of the Cobb River, and then through tunnels and penstocks to the powerhouse, located at the junction of the Tākaka and Cobb Rivers. 1023: 31: 1009: 979: 245:. Annual generation is approximately 190 gigawatt-hours (680 TJ). The initial stages of the construction of the station began as a privately-funded scheme in 1935, but the investor failed to raise the necessary capital. The national government took over building the station and the first power was produced in 1944, operating as a 376:
in 1999. There was a change of ownership only a year later, when the Natural Gas Corporation (NGC) purchased TransAlta New Zealand. In 2003, there was a further change of ownership, when TrustPower purchased the power station from NGC. Trustpower restructured its business in 2022, and sold its retail
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Storage was required to enable more reliable generation. The site of the dam for the scheme was found to be not suitable for a concrete dam, and over the period 1949 to 1954 an earth dam was built instead. The height of the dam above the foundation is 35 m (115 ft) and it has a crest length
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The government took over the project in 1940. By that stage, a powerhouse building had been constructed that would accommodate four generating units. Further work was delayed by shortages of labour and materials during World War II, and the first power was not generated until June 1944. At that
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A 40-year licence was granted to Hume Pipe Company in July 1935, on the basis that they were to sell surplus electricity for use in the Nelson region, and that power should be delivered within two years. However, in 1936, the Hume Pipe Company failed to raise the necessary capital to commence
416:, with the reservoir located entirely within the national park, another 14 km (8.7 mi) further up an unsealed steep and winding road. The access road to the reservoir is the only road into the interior of Kahurangi National Park. 401:. The water flow is channelled via two 4 km (2.5 mi) long penstocks and the height difference between the intake and the power station results in a high pressure water flow of 7.25 m³/s to feed the six 904: 397:
and has a head of 596 m (1,955 ft), the highest of any power station in New Zealand. From the reservoir, a 2.6 km (1.6 mi) long tunnel leads through the Cobb Range to the
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In 1997, as part of reforms of the energy sector, the New Zealand Government decided to sell eight small power stations including Cobb. The Cobb Power Station was sold to the Canadian company
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In 1935, the Waimea and Golden Bay Electric Power Boards, together with Nelson City Council, supported a proposal by the Hume Pipe Company to construct a hydro power station on the
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Cobb was the main generating station supplying the Nelson and Tasman areas as an isolated electricity supply network until 1955, when a transmission line connection was made from
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to the site of the power station. In 1938, Hume asked the New Zealand government to underwrite an issue of debenture capital, but this was rejected by the Minister of Finance,
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of 214 m (702 ft). The dam was commissioned in 1954, and at the time, it was the largest dam of its type in New Zealand. The nominal elevation of the
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Cobb Power Station can be reached from Upper Tākaka via a sealed but winding and narrow 16 km (9.9 mi) road along
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that had been approved in 1919, and a coal-fired steam generating plant commissioned in Nelson in 1923. The
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above sea level is 808 m (2,651 ft), making it the highest hydro storage lake in the country.
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who invented the spun concrete pipe. The company was interested in mining in the Tākaka and
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The Hume Pipe Company was an Australian-based company active in mining and manufacture of
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People, Politics and Power Stations – Electric Power Generation in New Zealand 1880–1900
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Early supply of electricity to the Nelson /Tasman region included a small scheme at
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construction of the scheme. Work began on construction of an access road from
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Edwards, Brent (25 February 1997). "Peters defends sale of power stations".
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The Cobb : the history of the Cobb River hydro-electric power scheme
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were both commissioned in 1929, the latter initially just supplying the
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Connecting the Country: New Zealand's National Grid 1886–2007
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areas, and combining the extraction of asbestos from the upper
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stage, there was no storage and the scheme operated as a
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Cobb Power Station, with penstock visible behind it
23: 237:of New Zealand. The power station is located in 2094:Buildings and structures in the Tasman District 928:"Cobb scheme still a powerhouse after 75 years" 1052: 8: 2089:Hydroelectric power stations in New Zealand 1449: 1092: 1059: 1045: 1037: 20: 16:Hydroelectric power station in New Zealand 817:"Cobb power station on the block again". 719:. Wellington: Steele Roberts Publishers. 581:New Zealand Heritage List/Rārangi Kōrero 552:New Zealand Heritage List/Rārangi Kōrero 241:, 112 km (70 mi) northwest of 442: 203:Related media on Commons 1970:Westhaven (Te Tai Tapu) Marine Reserve 891: 889: 840:"TrustPower takes over Cobb station". 690:Engineering New Zealand Te Ao Rangahau 512: 510: 508: 506: 364:to the rest of the South Island grid. 794:"Cobb sale marks the end of an era". 771:"TransAlta buys Cobb power station". 577:"Onekaka Hydro-electric Power Scheme" 431:List of power stations in New Zealand 7: 940:from the original on 22 October 2022 907:from the original on 8 December 2015 874:from the original on 28 January 2024 680: 678: 676: 638: 636: 621:from the original on 28 January 2024 605: 603: 601: 528:from the original on 28 January 2024 487:from the original on 28 January 2024 864:"Manawa Energy posts $ 390m profit" 696:from the original on 27 August 2023 14: 926:Hindmarsh, Gerard (1 June 2019). 426:Electricity sector in New Zealand 1021: 1007: 993: 977: 128:Thermal power station 29: 483:. 24 December 1919. p. 3. 2017:Golden Bay-Motueka Rugby Union 1: 1756:Rotopōhueroa / Lake Constance 1640:Tokangawhā / Split Apple Rock 901:Department of Conservation NZ 453:. TrustPower. Archived from 385:and launched on 2 May 2022. 1945:Tonga Island Marine Reserve 1828:Gowanbridge railway station 1818:Brightwater railway station 1751:Rotomairewhenua / Blue Lake 1560:Motuareronui / Adele Island 1419:Dun Mountain-Maitai Terrane 169:32 MW (43,000 hp) 2110: 1883:Nelson Lakes National Park 1784:Facilities and attractions 1746:Pourangahau / Mount Robert 1713:Nelson Lakes National Park 393:The station is fed by the 287:South Island national grid 1791:Abel Tasman National Park 1522:Abel Tasman National Park 1075: 518:"Nelson's power struggle" 477:"Electricity for Motueka" 208: 151: 147: 40: 28: 1903:Richmond railway station 1848:Kawatiri railway station 1736:Maniniaro / Angelus Peak 1703:Wharepapa / Arthur Range 963:Blair, Athol K. (1994). 643:Martin, John E. (1991). 293:Hume Pipe Company scheme 2048:Collingwood Area School 1898:Pupu Hydro Power Scheme 1813:Appleby railway station 1668:Ellis Basin cave system 1655:Kahurangi National Park 1635:Moturoa / Rabbit Island 1029:Renewable energy portal 414:Kahurangi National Park 267:Pupu Hydro Power Scheme 165:Nameplate capacity 133:Turbine technology 2053:Golden Bay High School 1975:Wharariki Ecosanctuary 1502:Te Waikoropupū Springs 715:Reilly, Helen (2008). 649:Bridget Williams Books 253:of any power station. 156:Units operational 84:41.08611°S 172.73222°E 1960:Wai-iti Dark Sky Park 1930:Stoke railway station 1893:Onekaka Power Station 986:at Wikimedia Commons 275:Onekaka Power Station 143:Power generation 2027:Richmond Athletic FC 1838:Hope railway station 615:nzetc.victoria.ac.nz 585:Heritage New Zealand 556:Heritage New Zealand 451:"Cobb Power Station" 368:Changes of ownership 347:run-of-river station 340:Government ownership 247:run-of-river station 109:Commission date 89:-41.08611; 172.73222 2068:Waimea Intermediate 2058:Motueka High School 1925:St Michael's Church 1914:Rutherford memorial 1402:Geographic features 870:. 9 November 2022. 548:"Pupu Hydro Scheme" 481:Nelson Evening Mail 457:on 26 February 2016 377:energy business to 192:/cobb-power-station 174:External links 80: /  2022:New Zealand Energy 1823:Cobb Power Station 1766:Saint Arnaud Range 1454:Golden Bay / Mohua 1097:Golden Bay / Mohua 1001:New Zealand portal 984:Cobb Power Station 821:. 22 August 2002. 522:www.theprow.org.nz 223:Cobb Power Station 24:Cobb Power Station 2076: 2075: 1955:Tour de Vineyards 1888:Onekaka Ironworks 1868:Motueka Aerodrome 1843:Karamea Aerodrome 1779: 1778: 1771:Spenser Mountains 1397: 1396: 982:Media related to 726:978-1-877448-40-9 283:Onekaka Ironworks 219: 218: 2101: 1935:Tākaka Aerodrome 1863:Milnthorpe Model 1555:Fisherman Island 1450: 1093: 1089:Populated places 1061: 1054: 1047: 1038: 1031: 1026: 1025: 1017: 1012: 1011: 1003: 998: 997: 996: 981: 968: 950: 949: 947: 945: 923: 917: 916: 914: 912: 893: 884: 883: 881: 879: 860: 854: 853: 844:. 4 March 2003. 837: 831: 830: 814: 808: 807: 791: 785: 784: 768: 762: 761: 745: 739: 738: 712: 706: 705: 703: 701: 682: 671: 670: 640: 631: 630: 628: 626: 607: 596: 595: 593: 591: 573: 567: 566: 564: 562: 544: 538: 537: 535: 533: 514: 501: 500: 494: 492: 473: 467: 466: 464: 462: 447: 320:and cement from 308:. 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Index


Tasman District
41°5′10″S 172°43′56″E / 41.08611°S 172.73222°E / -41.08611; 172.73222
Commission date
Manawa Energy
Hydroelectric
Nameplate capacity
www.manawaenergy.co.nz/cobb-power-station
Related media on Commons
edit on Wikidata
hydroelectric
Cobb River
Tasman District
Upper Tākaka
Nelson
run-of-river station
hydraulic head
Motueka
Pupu Hydro Power Scheme
Tākaka
Onekaka Power Station
Onekaka
Onekaka Ironworks
South Island national grid
Cobb River
asbestos
Walter Hume
Collingwood
Tākaka River
Tarakohe

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