Projects · West Sumatra

The Lubu cascade.

Two planned 10 MW mini-hydropower projects along the Batang Lubu river in Pasaman Regency, developed as a cascade system.

Project setting

Batang Lubu river, Pasaman.

The project area is approximately 250 km from Padang and is reached via the provincial and national road connection through Bukittinggi toward Sibolga.

Map showing the planned Lubu 1 and Lubu 2 hydropower locations on the Batang Lubu river

Cascade logic

Designed as two connected developments.

Each project is planned with two 5 MW Francis turbine units, using the river’s available head in sequence.

119 mLUBU 12 × 5.00 MW

145 mLUBU 22 × 5.00 MW

Published project data

The engineering profile.

PLTMH

LUBU 1

10.00 MW

Configuration: 2 × 5.00 MW
Net head: 119 m
Catchment area: ±155.65 km²
Mean rainfall: 3,000 mm/year
Average discharge: 13.95 m³/s
Maximum plant discharge: 9.38 m³/s (Q65%)
Minimum plant discharge: 1.88 m³/s
50 / 100-year design flood: 705.11 / 799.18 m³/s
Waterway: 3.051 km
Turbine: Francis, horizontal shaft

PLTMH

LUBU 2

10.00 MW

Configuration: 2 × 5.00 MW
Net head: 145 m
Catchment area: ±160.43 km²
Mean rainfall: 3,000 mm/year
Average discharge: 14.27 m³/s
Maximum plant discharge: 7.73 m³/s (Q79%)
Minimum plant discharge: 1.55 m³/s
50 / 100-year design flood: 726.76 / 823.72 m³/s
Waterway: 3.5 km
Turbine: Francis, horizontal shaft

Hydrology figures published by LHE reference F.J. Mock analysis using 31 years of rainfall records (1983–2013) and nine years of daily discharge records from nearby stations.

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