Otilovici HPP

Location of dam and HPP

“Otilovići” dam is built on the Ćehotina River at the distance of approximately 7 km from the town of Pljevlja. The location belongs to the municipality of Otilovići and the nearest town is Pljevlja.

Wide location area
Narrow location area
Satellite image of HPP location

Profile hydrological properties from original documentation

Basic profile hydrological properties (as given in the original technical documentation) are:

  • Mean discharge: 4.15 m3/s (0.53 m3 is extracted from the flow for use in priority consumers),
  • Ecological flow: 0.80 m3/s and
  • Flood discharge referent for design of spillways: 166 m3/s (Q0.1, 95% confidence interval).

Dam properties

Basic dam properties are:

  • Dam type: arch concrete dam and
  • Dam height: 59 m.

Storage properties

Basic storage properties are:

  • Regular water level: 837 m.a.s.l,
  • Minimum operating water level: 822 m.a.s.l,
  • Total volume: 18 million m3 and
  • Active volume: 13 million m3.

Conduit properties

Basic properties of water conduits are:

  • Penstock length: 105 m and
  • Penstock diameter: 1.8 m.

HPP/Powerhouse properties

Basic HPP/powerhouse properties are:

  • Plant type: diversion,
  • Unit type: Francis with horizontal shaft,
  • Number of units: 2 (smaller unit uses ecological flow),
  • Installed discharge: 8.00 for unit 1 and 1.00 for unit 2,
  • Tailrace water level: 797 m.a.s.l (assumed)
  • Gross head: 40 m (assumed),
  • Head loss: 0,5 m (assumed),
  • Net head: 39,50 m,
  • Installed power (active): 2.635 + 0.326 = 2.961 MW,
  • Mean annual electricity generation: 11,52 GWh and
  • Connection voltage level: 35 kV.

Source: IWRM Country Report for Montenegro, COWI, Stucky and Jaroslav Cerni Water Institute, 2017