Small hydropower plant in Starogard

Small hydropower plant in Starogard

Wierzyca river

An active fish pass produces electricity

A fish pass can also produce electricity. The use of an Archimedes screw set, one of which transports fish upstream and the other one downstream, at the same time producing electricity is an innovative project that increases profitability of the investment and reduces the area of the required development. Thanks to the use of biological flow, we produce additional electricity from a renewable energy source without the adverse effect on the natural environment, while meeting the need for patency of the river.


Średnica 2800 mm
Spad 4,88m
Moc 110 kW

Scope of Work

Cooperation with the customer included comprehensive turnkey implementation of the project, including: design, execution, installation and commissioning of a hydropower unit equipped with an automatic Archimedes screw.

The overall scope of activities within the project:

  • Implementation of the technical concept of the entire investment project
  • Updating the construction project and obtaining a building permit
  • Execution of structural and construction works as a general contractor
  • Delivery, installation and commissioning of the Archimedes screw and the fish pass in the form of a fish elevator
  • Execution of complete hydrotechnical control and automation installations with video monitoring
  • Delivery and installation of associated infrastructure, including:

- emergency valve

- sluice valve

- flap valve for flushing sluice

- steel components

  • Conducting technological start-up

Historical outline

The dam, on which the new small hydropower plant was installed, had been part of the technical infrastructure of the already defunct Starogardzkie Młyny, located several hundred metres downstream. 

The first mention of Młyny comes from the Teutonic period. At that time it was a facility with one water wheel located in the mill channel (the channel has been preserved up to now). However, the Starogard milling had a true renaissance much later, since only at the end of the 19th century and the beginning of the 20th century. At that time, the mill was expanded and the machine park modernised. In the 1920s a hydropower plant was built near Młyny.

The new small hydropower plant, equipped with an active fish pass, uses the biological damming flow.