Lake Onslow

Lake Onslow is a man-made lake east of Roxburgh and south of Alexandra in the Otago region of New Zealand. It lies 700 m (2,300 ft) above sea level. It was formed in 1890 by the damming of the Teviot River and Dismal Swamp.

"Onslow PHS" redirects here. For other uses, see Pumped-storage hydroelectricity.

Lake Onslow
Lake Onslow In May 2014
LocationOtago, South Island
Coordinates45°33′S 169°37′E
Typereservoir
Primary inflowsTeviot River
Primary outflowsTeviot River
Basin countriesNew Zealand
Surface elevation700 m (2,300 ft)

The lake is the subject of several paintings by the late Edward Mullor.

In 2019, the Climate Change Commission proposed that the lake be used for a pumped hydro-storage system to provide backup electricity generation in dry years. The project had first been proposed in 2005 by hydrologist Earl Bardsley of the University of Waikato.[1][2] In July 2020, Minister of Energy Megan Woods announced that the New Zealand government would fund a detailed feasibility study of the plan.[3] If progressed, the scheme would be the biggest infrastructure project in New Zealand since the 1980s, employ an estimated 3500 to 4500 people, and take four to five years to build and a further two years to fill.[4]

References
  1. "Accelerated electrification: Evidence, analysis and recommendations" (PDF). Independent Climate Change Commission. 30 April 2019. pp. 67–68. Retrieved 16 July 2019.
  2. Jones, Pam (18 September 2019). "Massive hydro storage plan to be reassessed". Otago Daily Times. Retrieved 18 September 2019.
  3. "Central Otago hydro project could be 'game changer'". Otago Daily Times. 26 July 2020. Retrieved 26 July 2020.
  4. Thomas Coughlan (26 July 2020). "Government wants 100 per cent green electricity by adding 'battery' power to hydro power". Stuff. Retrieved 26 July 2020.


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