PGE and Ørsted—partners jointly developing the Baltica 2 offshore wind farm—have selected the company that will be responsible for commissioning the onshore transformer substation located in the Choczewo municipality in Pomerania. The task will be carried out by the Polish company Enprom.

“The selection and signing of the contract with the contractor who will carry out the commissioning works of the onshore substation for Baltica 2 confirms how advanced the project already is. The electrical commissioning of the onshore grid connection infrastructure, followed by its continuous operation, will ensure the proper operation of the offshore turbines and uninterrupted electricity generation. We are particularly pleased that the commissioning works will be performed by a Polish company—one of the largest and most experienced power engineering construction firms in Poland, with a strong understanding of offshore project specifics. In this way, we are adding another building block to increasing the share of domestic content in the overall project,” said Bartosz Fedurek, President of the Management Board of PGE Baltica.

Another Polish subcontractor

“I am pleased that an increasing number of Polish companies are joining the supply chain for offshore wind energy. Signing the contract with Enprom demonstrates that the market has local capabilities essential for the development of the offshore wind sector. This is a very important area— from the onshore power substation we monitor and control the entire electrical infrastructure, including offshore substations and wind turbines located approximately 40 km from the shore,” said Ulrik Lange, Vice President and Managing Director of the Baltica 2 project at Ørsted.

The contract with Enprom covers commissioning works for power evacuation, including compliance and verification tests required by the transmission system operator—Polskie Sieci Elektroenergetyczne (PSE), tests confirming the design assumptions, trial operation, and handover of the substation for operation. The contract duration is 21 months. Enprom will inspect every element of the key equipment related to power transmission and distribution, as well as all other systems necessary for the correct and safe operation of the entire facility.

“This project will allow us to combine our substation expertise with our already extensive offshore experience. It is worth noting that with the signing of the contract for works on the Baltica 2 project, Enprom, as a contractor, will be involved in all four offshore wind farms currently under construction in the Polish Baltic Sea,” noted Piotr Tomczyk, a member of Enprom’s management board.

Investment near Choczewo

The high-voltage substation for the Baltica 2 wind farm is being built on an area of nearly 13 hectares in Osieki Lęborskie, in the Choczewo municipality in Pomerania. This is where the electricity generated by the offshore wind farm will be delivered. After reaching the shore, the 275 kV power from the offshore wind farm will be transmitted via a 6-kilometre cable route to the onshore transformer substation, where it will be stepped up to 400 kV and then fed into the national grid through the nearby PSE Choczewo substation.

North of the substation, close to the coastline, HDD drilling works are underway to enable the connection of the onshore cable section with the offshore section. The use of this technology significantly minimizes environmental impact. The commissioning of the onshore transformer substation itself will have no effect on the normal operation of the low- and medium-voltage distribution network, either in the vicinity of the substation under construction and commissioning or in other installations.

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