Porce III: Facts and figures
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27 February 2008
Construction start date | January 2006 |
Completion date | 2010/2011 |
Total contract value | US$ 920 million |
Contract 1 | Dam and some tunnels, US$ 240 million |
Contract 2 | Powerhouse and some tunnels, US$ 209 million |
Dam | |
Concrete faced rockfill dam | |
Height | 151 m |
Width at base | 400 m |
Crest length | 426 m |
Crest width | 8 m |
Fill | 4.15 million m3 |
Tunnels | |
Diversion tunnel | 98.4 m2 in section; 653 m long |
Upper headrace tunnel | 86.4 m2 in section, 12.3 km long |
Lower headrace tunnel | 86.4 m2 in section, 304 m long |
Pressure shaft | 83.3 m2 in section, 149 m long |
Tailrace and restoration tunnel | 90.8 m2, 828m5 m long |
Adits | 3 x 32.1 m2, totalling 1.87 km long |
Power station | |
Hydrostatic head | 322 m |
Four x 172 MW Francis turbines | |
Annual generation | 3106 GWh |
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