By Myrna M. Velasco
Published: June 24, 2013
The Diduyon hydropower project being developed by GEM Holdings Inc. of the Tan Group in Northern Luzon will likely be downscaled to 150 megawatts from the earlier target of 200MW or a higher scale of 320MW.
This was indicated to media by Department of Energy (DOE) director Mario Marasigan, noting that this has been based on the outcome of the investor-group’s feasibility and validation studies.
“They (GEM Holdings) are looking for other possible scheme of development – it will be either longer headrace or smaller capacity,” the energy official said.
Any decision on the project developer’s part will have to be submitted to the DOE, as this will also be needed for the latter’s endorsement of the proposed facility’s implementation.
At the preliminarily-targeted scale of 320MW, the numbers crunched for capital outlay had been more than $600 million.
As designed, the propounded hydropower project will be developed along the Diduyon River in Cobarroguis and Natipuhan sites in Quirino province.
The development plan for the facility had been initially hinged on the outcome of the 2001 studies undertaken by the Japan International Cooperation Agency (JICA). Back then, assessed ramped up capacity of the plant could reach as high as 345MW.
However, it was gathered from industry sources that one of the controversial results of the study of GEM Holdings had been that “the water is not the same as the previous studies.”
The facility’s development blueprint in the JICA study that was submitted to the National Power Corporation (NPC) will be for the waterways to consist of a pressure tunnel, a surge tank and an open laid penstock.
Similarly, a construction of semi- underground power station was proposed to house the two vertical Francis turbines for electricity generation. Back in the 1990s, NPC also entered into a contract with international firm NEWJEC for a definite design study, which was funded by the Asian Development Bank. source
This was indicated to media by Department of Energy (DOE) director Mario Marasigan, noting that this has been based on the outcome of the investor-group’s feasibility and validation studies.
“They (GEM Holdings) are looking for other possible scheme of development – it will be either longer headrace or smaller capacity,” the energy official said.
Any decision on the project developer’s part will have to be submitted to the DOE, as this will also be needed for the latter’s endorsement of the proposed facility’s implementation.
At the preliminarily-targeted scale of 320MW, the numbers crunched for capital outlay had been more than $600 million.
As designed, the propounded hydropower project will be developed along the Diduyon River in Cobarroguis and Natipuhan sites in Quirino province.
The development plan for the facility had been initially hinged on the outcome of the 2001 studies undertaken by the Japan International Cooperation Agency (JICA). Back then, assessed ramped up capacity of the plant could reach as high as 345MW.
However, it was gathered from industry sources that one of the controversial results of the study of GEM Holdings had been that “the water is not the same as the previous studies.”
The facility’s development blueprint in the JICA study that was submitted to the National Power Corporation (NPC) will be for the waterways to consist of a pressure tunnel, a surge tank and an open laid penstock.
Similarly, a construction of semi- underground power station was proposed to house the two vertical Francis turbines for electricity generation. Back in the 1990s, NPC also entered into a contract with international firm NEWJEC for a definite design study, which was funded by the Asian Development Bank. source
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