Energa Group RES power plants – Juszkowo Hydroelectric Power Plant [video]

Energa presents an overview of all renewable energy facilities under its management. Renewable energy sources are part of the Energa Group strategy for 2016-2025. Energa is a national leader in this field. At the beginning of 2020, more than 30% of the Company's production mix came from renewable sources.

Energa owns 46 hydroelectric power plants, five wind farms and two solar farms. The total capacity of these power plants is 444 MW. The Company continues to expand its onshore wind farms, invests in solar energy projects, and, as a long-term project, plans to build offshore wind farms. In April 2019, work began on the construction of the 30 MW Przykona Wind Farm. Completion of the investment and obtaining of the operation permit are planned for Q2 2020.

Juszkowo Hydroelectric Power Plant was built at a location of a former mill. It was built and launched in 1937 in Juszkowo near Pruszcz Gdański. It is a run-of-river power plant (just like the Pruszcz Hydroelectric Power Plant, which is located downstream) and is equipped with a semi-diurnal equalization tank. The power plant features a single water turbine-generator unit with a vertical shaft Kaplan turbine, which runs the generator via a three-stage gearbox. The power plant runs 24h a day in the continuous flow system to equalize the flow in the river channel below the barrage to the level of tributary to the Łapino power plant tank. In 2006, the power plant was modernized. The power plant is equipped with an electrohydraulic speed controller, which supports automatic operation supervised by dispatchers.

The maximum flow of the turbine under the maximum head (tank full) is Qmax = 7 m3/s and is reduced as the tank level is lowered. The average effective head is H = 5m. The catchment area is 745 sq. km, and the average multi-year flow Qavg = 5.65 m3/s.

Hydroelectric power plants are an important element in the electricity generation chain of the Energa Group. They are constantly upgraded and overhauled, which maintains their energy efficiency at a very high level.

Technical specifications:

number of turbines: 1
type: Kaplan in a closed chamber
manufacturer: Escher-Wyss
rpm: 240
construction system: vertical
installed capacity: 232 kW

generator: asynchronous
manufacturer: Siemens- Schuckert
power generator voltage: 0.4 kV
rpm: 770