Wolica SHPP

Czarna Nida river

Two types of turbines in a small hydropower plant

Wolica SHPP

Two types of turbines in a small hydropower plant

Historical view

The oldest known information of the mill in Wolica dates back to the mid-nineteenth century. At that time, the mill was powered by two wooden wheels, each 4 m in diameter. At the turn of the 19th and 20th centuries, the wooden building had been rebuilt and a brick structure was erected in its place, the remains of which can still be seen today. After the reconstruction, the mill retained its previous function, but the grain milling rollers were not driven by two but one wheel now - which was a significant 8 meters in diameter.

In 1932, a Francis turbine was installed in the mill, produced by the St. Weight S.A., with a power of 32 HP (horsepower). It was placed in a turbine cage located in a separate annex.

After the flood in 2001, the mill was transformed into a hydroelectric power plant and since then, having been optimised twice, this is how it currently operates.


Diameter 2600/1100 mm
Head of 2,2 m
Power 30/45 kW

Technologies used

  • Kaplan turbine
  • Archimedes' screw

The investment has been carried out in the "design-and-build" formula that included designing, manufacturing, assembly and commissioning of hydrosets euqipped with a Kaplan turbine and an Archimedes Screw.

Business Development Director
Scope of work

Investment planning

  • Feasibility study
  • Technical and financial concept of the investment project
  • Acquiring the right to dispose of the land
  • Obtaining an environmental decision
  • Obtaining a water law permit
  • Obtaining financing for the project from the European Fund
  • Making arrangement on the implementation of the project with the Provincial Historic Preservation Officer
  • Obtaining a building permit

Consulting and design

  • Preparation of the detailed design

Execution of construction works as a general contractor:

  • Delivery of a complete Archimedes screw hydroset
  • Delivery of a complete Kaplan turbine hydroset
  • Obtaining a permit to use the facilit
  • Obtaining a permit on sale of electircity