PROJECT DETAILS

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Location
Bandarawela, Sri Lanka
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Owner
Ministry of Mahaweli Development and Environment of Sri Lanka
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Scheme
EPC
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Start Date
2017
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Completed
Ongoing
OVERVIEW

Uma Oya multipurpose Development project is proposed to transfer water from Uma Oya to Kirindi Oya in order to develop hydropower and to irrigate the dry and less developed south-eastern region of the central highlands. Capacity of the electrical power generation is 120 MW and irrigation of approx. 25,000 acres of paddy lands.

Uma Oya Multi-Purpose Project aims to generate hydropower and water for industrial activities.

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Detailed Overview

Project Highlights

Specification:

  • Capacity: 120 MW (2 Units of 60 MW), 145mcm/ year trans basin water conveyance
  • Type of power house: Underground
  • Average annual power generation: 290 GWh
  • Main equipment:
      • Turbine: Vertical Pelton, 600 rpm
      • Generator: Synchronous type, 10.5 KV
      • Inlet valve: Spherical, 1.1 m inner outlet diameter
      • Governor: Hydraulic with digital PID controller
      • Transformer: Three phase step up transformers, 76 MVA
      • Switchyard: 132 KV
      • Transmission line: 22.7 km
  • Civil works:
      • Dam type: RCC
      • Height of dams: 38 m and 42.5 m
      • Reservoirs link tunnel length: 3750 m
      • Headrace (power) tunnel length: 15.54 Km
      • Vertical pressure shaft (with steel lining) height: 595 m
      • Power house dimensions: 70 m × 18 m × 36 m
      • Tailrace tunnel length: 3650 m

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