THE PROJECT

The aim of the investment is construction and exploitation of an offshore wind farm located in the southern part of the Baltic Sea, within the Polish Exclusive Economic Zone. In accordance with the project, it is to be located at the distance of approximately 23-31 km to the north of the shoreline, off Ustka, Łeba and Władysławowo (the Pomorskie Voivodeship). The total surface of the farm is over 319 km˛. The investment will be implemented in three stages: design, construction and exploittaion. The enterprise is justified by both technical and economic factors and it is consistent with the planned development of the use of renewable energy sources in Poland.

Investors of the offshore wind farm project include: Elektrownia Wiatrowa Baltica-2 and Elektrownia Wiatrowa Baltica-3. Both entities are subsidiaries of PGE Energia Odnawialna (PGE EO) included in the PGE Capital Group. The main areas of operation for PGE EO include generation of electricity from renewable energy sources (RES) and providing Control System Services. Currently, the company administers 33 hydropower plants (29 run-of-river hydropower stations and 4 pumped storage power stations, including 2 with a natural affluent), 14 wind farms and one solar farm.

Offshore wind farm by PGE Energia Odnawialna company will be located within the Polish Exclusive Economic Zone of the Baltic Sea. It is a zone which was enabled for construction purposes by decisions from 16 April 2012 by the Minister of Transport, Construction and the Maritime Economy. Construction of artificial islands and various structures was enabled in this area. The project by PGE Energia Odnawialna assumes construction of two wind farms:

  • Baltica-2 – within 31 km from the Polish coast
  • Baltica-3 – within 26 km from the Polish coast

The technical parameters of the offshore wind farms complex of Baltica-2 and Baltica-3
The name of the object or parameterThe value of the parameter/description
The maximal number of turbines1045.3 MW / 5 MW
Offshore measurement station2 stations at maximum
Offshore transformer substation17 stations at maximum
Offshore service/residential stationOffshore service/residential station 2 stations at maximum
Collection station and/or conversion station4 stations at maximum
The total surface area covered by permits320.16 km2
The total surface area covered by permits excluding the buffer zone259.7 km2
The distance between the turbinesfrom 4 to 12 times the rotor diameter
The total number of foundations234 at maximum
The general parameters of the offshore wind farms complex of Baltica-2Baltica-3
The surface of the sea area189,35 km^2130 km^2
The distance from the shore 31 kmok. 25 km
The maximal total nominal power1500 MW1050 MW
Maximum number of wind power stations300 items210 items
The minimal installed capacity of a single offshore wind farm150 MW150 MW
The maximal number of offshore wind farms107
Characteristics of the offshore wind farms (turbines) Baltica-2 and Baltica-3
The minimum specific power of a wind turbine5 MW
The maximal output power of a wind turbineNot established
The maximal total height of the construction250 m
The minimal diameter of a wind turbine rotor 100 m
The maximal diameter of a wind turbine rotorNot established
The minimal and maxima; distance between the turbines4–12 times the rotor diameter

Due to the progressing technical development and the length of the individual construction phases, it is impossible to establish the exact construction specification.

The height of an individual wind turbine may be up to 250 metres and the span of the rotor wings is to 164 metres. Its function is to capture wind energy and transmit it to the power generator drive unit located in the nacelle. It transforms wind energy into electricity. Thus generated beam flows through an energy cable installed in the tower – first, to an offshore power substation and next, to a land station [1]

The entire turbine remains stable thanks to the foundation. Depending on the seabed type and depth, the best possible technology adjusted to the individual construction demands is applied. Nowadays, four types of foundations can be distinguished, one of which is selected depending on the seabed type and depth at which the constructions are to be constructed.

1. Sources: Marine Renewable Energy: Necessary for sefaguadfingg the marine envroment? Marine Insitute, Playmouth Univeristy