The bioenergy plant in Valka built by HoSt supplies hot water to the district heating network and supplies electricity to the local grid.

The owner of the plant is the Estonian energy company Enefit / Eesti Energia. The plant is designed for extreme winter conditions.


Start project February 2011
Start-up / first fire April 2012


Wood storage 500 m³
Furnace 11.5 MWth – 5.3 t/h wood chips
Water tube boiler 10 MWth 51 barg, 450°C
Steam turbine 1.95 MWe at 90°C
2.26 MWe at 70°C
Steamcondenser 8.1 MW at 90°C


  • Heat distribution station integrated with existing boiler house;
  • Prepared for expansion of heat delivery to Estonia;
  • Designed for very cold winter conditions;
  • Delivery includes civil work.