Offshore substations for Baltica 2 are taking shape - the first transformer has been installed

The Baltica 2 Offshore Wind Farm – a joint project between PGE and Ørsted – in addition to 107 turbines with a total capacity of 1.5 GW, will consist of four offshore electrical substations. Each of them will be equipped with two 225 MVA transformers. The first transformer has already been installed on one of the offshore substations (OSS). This is an important milestone in the production process of key components for the Baltica 2 project.
The task of the offshore substations is to collect electricity generated by the wind turbines and transmit it to shore. Each substation has five decks with overall dimensions of 45 × 25 × 20 meters and a weight of approximately 3,000 tonnes, which corresponds to the weight of about 2,000 passenger cars. The substations are uncrewed – technicians will only access them to carry out maintenance and necessary repairs.

- An offshore substation is the ‘heart’ of a wind farm. These huge structures are crucial to ensuring the efficiency of offshore wind power, because they enable the transmission of energy from the turbines, which for the Baltica 2 project will be located about 40 km from the seashore. The installation of the first transformer is a symbolic moment showing that the production of key components for the largest offshore wind farm in Poland is proceeding according to schedule and to the highest safety standards - said Ulrik Lange, Managing Director of the Baltica 2 project at Ørsted.

- Entering the next stage of the manufacturing process for offshore substations is a clear signal of the advancement of the Baltica 2 Offshore Wind Farm project. We are in the final stage of preparing the wind farm to begin offshore construction. Work on the offshore substations is an example of international cooperation among several entities, which is very characteristic of the global industry that offshore wind energy is - said Bartosz Fedurek, President of the Management Board of PGE Baltica.​
A line of construction workers in orange high-visibility gear and helmets stand giving thumbs-up at an industrial site with scaffolding, cranes, and a large equipment module being lifted in the background.
The offshore substations are being built under a contract signed by Ørsted and PGE with the SEMCO Maritime and PTSC Mechanical & Construction consortium, covering the design, construction and commissioning of four substations for the Baltica 2 project. One of the essential elements of their equipment will also be specialised cranes, which will be supplied by the Polish company PROTEA S.A.

Behind this achievement are thousands of hours of focus, skill and teamwork — 3.3 million man‑hours without accidents causing lost time at work, and 22 critical lifts on the topside performed safely and precisely.

Work on the offshore substations is progressing according to schedule. The structures of the first two are already complete. At the same time, assembly of the remaining two substations is underway so that the entire Baltica 2 transmission system will be ready for commissioning in 2027.

Baltica 2, with a capacity of up to 1.5 GW, is a joint investment by PGE and Ørsted. After commissioning in 2027, it will be the largest offshore wind farm in Poland, capable of supplying renewable energy to approximately 2.5 million households.

​Media contacts:
Beata Głuszcz
Head of Communication
Offshore Poland at Ørsted
beagl@orsted.com
+48 57 341 25 37

Marcin Poznań
PGE Baltica
marcin.poznan@gkpge.pl
+48 887 856 620