Roaring Meg hydro scheme
{{Use New Zealand English|date=April 2024}}
{{Short description|Hydroelectric power stations}}
{{coord|45|0|6|S|169|4|8|E|display=title}}
Image:Roaring Meg Power Station Otago Aug 2007.jpg
The Roaring Meg hydro scheme refers to two small hydro electricity power stations fed by the Roaring Meg Dam. The scheme is located next to the Roaring Meg Stream in the Kawarau Gorge, near Cromwell, New Zealand. Roaring Meg is owned and operated by Pioneer Energy.
History
The scheme was built by the Otago Central Power Board starting in 1934 and commissioned 1936, at a cost of 40,000 pounds.{{Cite web|url=http://www.nzsouth.co.nz/centralotago/cromdo.html|title=>Central Otago New Zealand - Heart of the South- Things to do around Cromwell|website=www.nzsouth.co.nz|access-date=2019-12-14}} At times the lower station has been flooded by the Kawarau River.Cromwell Handbook 2nd edition: [http://www.cromwell.org.nz/downloads/Handbook2005.pdf http://www.cromwell.org.nz/downloads/Handbook2005.pdf] {{webarchive|url=https://web.archive.org/web/20070930010330/http://www.cromwell.org.nz/downloads/Handbook2005.pdf |date=2007-09-30 }}
Layout
The scheme starts with the {{convert|10|m}} high Roaring Meg Dam located {{convert|3.6|km}} upstream from the confluence with the Kawarau River. The intake flows into a series of pipes connected to the power stations. The upper station discharges into both a pipe feeding the lower station and the Roaring Meg Stream, while the lower station discharges into the Kawarau River.[http://www.qldc.govt.nz/Documents/ContentDocuments/District_Plan/2007_Operative_District_Plan/12%2012%20Hydro%20Gen%20June%202007.pdf http://www.qldc.govt.nz/Documents/ContentDocuments/District_Plan/2007_Operative_District_Plan/12%2012%20Hydro%20Gen%20June%202007.pdf]
Performance
Annual energy production from both stations is approximately {{convert|30|GWh}}.
Lower Roaring Meg station:
- Two turbines
- Operating Head {{convert|304|m}}
- Combined Output {{convert|3000|kW}}
- Flow 1300 litres per second
Upper Roaring Meg station:
- Two turbines
- Operating Head {{convert|125|m}}
- Combined Output {{convert|1263|kW}}
- Flow 1300 litres per second [http://www.centrallakestrust.org.nz/documents/pgl_faq_0906.pdf http://www.centrallakestrust.org.nz/documents/pgl_faq_0906.pdf]
References
{{reflist}}
External links
{{stack|{{Portal|New Zealand|Water|Renewable energy}}}}
{{Central Otago}}