Image for illustrative purposes

Nearly 700 metric tonnes of transformer insulating oil have been delivered for the first stage of Poland’s largest offshore wind project, supporting the installation and commissioning of high-voltage transformers used to connect offshore generation to the national grid.

The delivery was completed by Nynas for transformer units supplied as part of grid infrastructure built by GE Vernova Grid Solutions for the Baltica Offshore Wind Farm. The project, located in the Polish Baltic Sea, is being developed in multiple phases, with the Baltica 2 stage now partially operational.

The initial phase included the energisation of 80 offshore wind turbines, each rated at 15 MW, providing 1.2 GW of installed capacity. Power from the turbines is transmitted via offshore and onshore substations equipped with large power transformers designed for high-load, marine operating conditions.

The transformer units were manufactured in Turkey and transported by sea before being moved to the installation site using heavy-lift logistics. Filling and commissioning activities were completed within a 45-day timeframe, according to project participants.

The broader Baltica offshore wind program is planned as an eight-stage development targeting 6 GW of total capacity, with total investment estimated at approximately $65 billion. Preparations are underway for a second phase of transformer installations scheduled for 2026.

Source: nynas.com