Baltic wind farms Bałtyk 2 and 3 gain momentum across offshore and onshore works

The Bałtyk 2 and Bałtyk 3 offshore wind projects, jointly developed by Equinor and Polenergia, are advancing rapidly with parallel progress across offshore installation activities and onshore infrastructure development. The combined 1.44 GW scheme is moving steadily toward the execution phase, marking a key milestone in Poland’s offshore wind build-out.

Kamil Kusier executive editor 30.04.2026, 06:15 Reading time: 2 min

Service base buildings under construction by the water, one wrapped in red netting scaffolding — fot. Equinor / Polenergia

In brief

Equinor and Polenergia have begun the first offshore installation campaign in the construction of the Bałtyk 2 and Bałtyk 3 wind farms with a combined capacity of 1,440 MW. More than a million tonnes of seabed stabilising rock will go into the project, and substations with two 450 MVA transformers with a mass of 352 tonnes are being built in Pęplino near Ustka. Progress on the 220 kV line stands at around 80 percent and on the 400 kV line at around 90 percent, while the operations and maintenance base in Łeba is being finalised. First power deliveries are planned for 2027 and full commercial operation for 2028.

First offshore installation campaign underway

The first phase of offshore construction has commenced, with specialist vessels deployed to carry out subsea rock installation works. The rock placement campaign plays a critical role in safeguarding seabed infrastructure, providing mechanical protection for export and inter-array cables as well as turbine foundations against hydrodynamic loads.

More than one million tonnes of rock are expected to be installed across the offshore site, forming a protective layer essential for long-term asset integrity.

At the same time, manufacturing activity is progressing across multiple European and Polish fabrication yards. Key components under production include monopiles, transition pieces, offshore cables, and topside elements for offshore substations. Tower manufacturing for Bałtyk 2 has also begun, marking a transition from procurement to serial production of primary wind turbine structures.

Upcoming offshore activities will include installation of monopile foundations and transition pieces, followed by export and inter-array cable laying campaigns.

Onshore substations and grid connection advancing

Significant progress is also being made onshore at the substation site in Pęplin, near Ustka. The onshore substations (ONS) for both projects are being equipped with two 450 mva transformers, each weighing 352 tonnes, alongside ongoing electrical installation and finishing works.

Grid connection infrastructure is nearing completion, with approximately 80% progress on the 220 kv transmission line and around 90% on the 400 kv system. Horizontal directional drilling (hdd) works are currently being executed at the landfall section to enable cable transition from offshore to onshore without surface disruption.

Operations and maintenance base in Łeba

Construction of the operations and maintenance (o&m) base in Łeba is approaching final stages. The facility will serve as the central hub for offshore operations, integrating warehousing, administrative offices, and a remote control centre for wind farm monitoring and management. A dedicated quay for service vessels is also being developed.

Recruitment of operational personnel is ongoing, with the facility expected to become a key long-term asset supporting offshore operations in the Baltic Sea.

Strategic offshore development for Poland

Once fully operational, Bałtyk 2 and Bałtyk 3 will deliver a combined capacity of 1.44 gw, supplying renewable electricity to more than two million households in Poland.

First power delivery to the grid is expected in 2027, with full commercial operation targeted for 2028.

The projects represent one of the most advanced offshore wind developments in the Polish sector of the Baltic Sea, reinforcing the region’s emergence as a major hub for offshore renewable energy in Central and Eastern Europe.

Source: Gazeta Morska · Compiled by: Kamil Kusier