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Bumbuna HPP (Sierra Leone)

Hydropower Plant

Place:

Seli River - Sierra Leone

Customer:

Ministry of Energy & Power - Republic of Sierra Leone

Year:

1975 - in progress

Project Description:

Hydropower Plant to be constructed in 5 phases, with an installed power of 275 MW in final phase. The phase 1 scaled down solution (50 MW) was completed

Main Features:
  • Reservoir (V = 410 Mm³)
  • Bituminous Faced Rockfill dam (BFRd, H = 88 m, V = 2.8 Mm³)
  • No. 2 headrace tunnels (L = 620 m, D = 9 m)
  • Shaft power house (No. 2 Francis turbines, HN = 80 m, Q = 80 m³/s, IP = 50 MW)
  • No. 2 vertical synchronous generators (33.7 MVA)
  • No. 2 step up transformers (13.8/161 kV)
  • Transmission line (161 kV, L = 205 km)
  • No. 2 substations with step-down transformers
Engineering Service:
  • Prefeasibility and Feasibility studies
  • Final Design
  • Revision and Updating of Final Design
  • Supervision of Works
  • Dam Safety Programme and Emergency Preparedness Plan
  • Dam Operation and Maintenance Manual
  • Monitoring and Assistance during Operation