Papenoo Hydroelectric Power Station
|Papenoo Hydroelectric Power Station|
|Location||Papenoo, Tahiti, French Polynesia|
|Owner(s)||Electricite de Tahiti SA|
|Units operational||7 x 4 MW Pelton-type|
|Nameplate capacity||28 MW|
The Papenoo Hydroelectric Power Station is located near the commune of Papenoo on the island Tahiti in the overseas country of France, French Polynesia. It has an installed capacity of 28 MW and was constructed between 1989 and 1994. The hydroelectric power station is owned by Electricite de Tahiti SA. It is the largest hydroelectric power station in Tahiti.
It uses water provided by five reservoirs high up in the Papenoo Valley, above the commune. Each reservoir is created on the Papenoo River or a tributary by an embankment dam. From highest in elevation to lowest; Vaitapaa Dam at , which lies at an elevation of 411 m (1,348 ft) above sea level, is 15 m (49 ft) tall. It withholds a reservoir of 8,000 m3 (6.5 acre·ft). Next, at an elevation of 400 m (1,300 ft), Tahinu Dam, at is 33 m (108 ft) high and withholds a larger reservoir of 1,500,000 m3 (1,200 acre·ft). It is the tallest dam in Tahiti. Moving down is Vainavenave Dam at which lies at 399 m (1,309 ft) above sea level, is 29 m (95 ft) tall, and withholds a reservoir of 150,000 m3 (120 acre·ft). Fourth down the valley is the Vaituoru Dam at an elevation of 200 m (660 ft) with a reservoir capacity of 100,000 m3 (81 acre·ft). It is located at . Finally is the Tevaiohiro Dam at 85 m (279 ft) above sea level with a reservoir volume of 150,000 m3 (120 acre·ft). It is located at .
Water from the reservoirs is sent to three separate power stations via 25.5 kilometres (15.8 mi) of penstock. The power station highest in elevation, Papenoo 1 contains four 4 MW Pelton-turbine-generators and is located at . Next downstream is Papenoo 2 at which contains one 4 MW Pelton turbine-generators. Lastly, Papenoo 3 contains two 4 MW Pelton turbine-generators and is located at .
- "References: Hydroelectricite" (in French). Société d'Etudes et de Développement Polynésienne. Retrieved 21 April 2014.
- Milési, Géraldine (2007). "Réhabilitation de 15 barrages situés sur l’Île de Tahiti en Polynésie Française" (in French). Barrages CFBR. Retrieved 21 April 2014.
- "Le Group EDT" (in French). Electricite de Tahiti SA. Retrieved 21 April 2014.