The Pulangi IV Hydroelectric Power Plant, also known as the Pulangi Dam, is located on the
Pulangi River near
Maramag in
Bukidnon province on the island of
Mindanao in the Philippines. It uses two reservoirs, produced by
damming the Pulangi River, to supply water to a
run-of-the-river hydroelectric
Hydroelectricity, or hydroelectric power, is electricity generated from hydropower (water power). Hydropower supplies one sixth of the world's electricity, almost 4500 TWh in 2020, which is more than all other renewable sources combined and ...
power plant; the power plant is capable of generating of power.
Construction began in 1982; the first two
generators became operational in December 1985, with the last generator being commissioned in 1986.
The upper (
pondage) reservoir located at diverts water into a power channel which parallels the river until it reaches the lower reservoir (surge pool) at , to the south. At the lower reservoir, water is fed to each of the three
Francis turbine
The Francis turbine is a type of water turbine. It is an inward-flow reaction turbine that combines radial and axial flow concepts. Francis turbines are the most common water turbine in use today, and can achieve over 95% efficiency.
The proces ...
-generators via a
penstock.
The Pulangi IV power plant provides 23% of the hydroelectric power generated on Mindanao.
[
Since operation, the reservoirs associated with the power plant have received an estimated of sediment annually. Of the reservoir's combined active capacity, has been filled with silt. The siltation rate was almost 1 meter annually and caused the dam's reservoir to work at 50% capacity.]dredging
Dredging is the excavation of material from a water environment. Possible reasons for dredging include improving existing water features; reshaping land and water features to alter drainage, navigability, and commercial use; constructing da ...
work was performed around the head work of the upper reservoir's head. Selective dredging in the upper reservoir began in 2010, and continues as of 2011.[
The artificial lake created by the reservoir proper is called the Pulangi Lake or the Maramag.
]
References
{{Dams in the Philippines
Energy infrastructure completed in 1986
Hydroelectric power plants in the Philippines
Run-of-the-river power stations
Buildings and structures in Bukidnon
1986 establishments in the Philippines