Each penstock feeds a single reversible 400 MW Francis turbine-generator with water before it is released into a long tailrace tunnel which discharges into the lower reservoir, created by the "'Kazunogawa Dam " '.
22.
The water conductor system consists of penstock pipes ( of diameter ) from the dam to feed the four power plants ( turbo-generators ) and a tailrace tunnel of length and diameter, to lead the water back to the Chambal River.
23.
The construction of the station required the excavation of almost 1.4 million tonnes of hard rock to build the machine hall and a 10 km tailrace tunnel, with a second parallel tailrace tunnel completed in 2002 to increase the station's capacity.
24.
The construction of the station required the excavation of almost 1.4 million tonnes of hard rock to build the machine hall and a 10 km tailrace tunnel, with a second parallel tailrace tunnel completed in 2002 to increase the station's capacity.
25.
SNAP-Benguet began a massive rehabilitation project that restored Ambuklao to operating status and increased its capacity from 75 MW to 105 MW . The project required the construction of a new intake, headrace and penstock, elevation of tailrace tunnel outlet, de-silting of tailrace tunnel and replacement of electro-mechanical components.
26.
SNAP-Benguet began a massive rehabilitation project that restored Ambuklao to operating status and increased its capacity from 75 MW to 105 MW . The project required the construction of a new intake, headrace and penstock, elevation of tailrace tunnel outlet, de-silting of tailrace tunnel and replacement of electro-mechanical components.
27.
Hydroelectricity generation has remained relatively steady since 1993 the only major hydroelectricity projects since then was the completion of the second Manapouri tailrace tunnel in 2002, increasing the station from 585 MW to 750 MW, and due to resource consent the station increases further to 800 MW . No major new hydroelectric projects have been committed as of December 2011, but there are proposals for further developments on the Waitaki and Clutha Rivers, and on the West Coast of the South Island.
