GENED-1 Hydroelectric Power Plant

Meteorological and hydrological assessments for the GENED-1 Hydroelectric Power Project, Philippines

Feasibility Study – Hydrology, Sediments, Energy

Detailed meteorological and hydrological assessments are a crucial part of the feasibility study for the GENED-1 Hydroelectric Power Project (HEPP) on the Apayao-Abulug River in northern Luzon, which is an interesting site for hydropower development characterized by a large catchment area and high discharge.

Map of seasonal precipitation sum in mllilimeters
Dry season precipitation map for Apayao-Abulug basin

The Apayao-Abulug River in northern Luzon has not been used for any hydropower development. The GENED-1 site is situated 62 km upstream of the river mouth is highly attractive. Because of concerns raised by local authorities and stakeholders, the design of the HPP was altered. The new design is treated in the feasibility study. It proposes the establishment of a hydro power plant with a 105 m high rockfill dam and an installed capacity of 150 MW.

Scope of Work

  • Collection of hydro-meteorological data
  • Review of previous studies
  • Rainfall-Runoff-Model and its calibration
  • Flood frequency analysis
  • Estimation of PMF
  • Estimation of potential climate change impacts
  • Estimation of the sediment transport with USLE approach
  • Energy simulations

Impact on the project

Meteorological and hydrological assessments employing state-of-the-art methods, form the basis of the HPP design and the optimization of the plant operation.

GENED-1 Hydroelectric Power Plant
Global Climate Model precipitation projections over Apayao-Abulug basin: ensemble means for different emission scenarios
(RCP 2.6: very low emissions, RCP 4.5: low emissions, RCP 6.0: high emissions, RCP 8.5 very high emissions)

Facts about the project

Client: Pan Pacific Renewable Power Philippines Corporation


  • Review of previous assessments
  • Estimation of inflow
  • Flood frequency analysis
  • Probable Maximum Flood (PMF) assessment
  • Estimation of sediment yield and bed load transport
  • Energy simulations

Implementation period: 2015

Location: Philippines

Philipp Stanzel - Hydrology, Flood Forecast, Climate Impact Research
Philipp Stanzel
Hydrology, Flood Forecast, Climate Impact Research

Interested in our offering? Contact us!

Contact Philipp Stanzel

For sales enquiries, please complete this form. For all other enquiries, please visit our office and contacts page here.