Cable pooling not only reduces infrastructure costs but also boosts the chances of securing a grid connection. The new solar park is shown here, with the wind park in the background. ©Goldbeck
New large-scale photovoltaic project near Poland’s Baltic coast uses cable pooling alongside a wind power farm to enhance efficiency and simplify grid connection amid local network constraints.
Munich, 01 Juli 2025
GOLDBECK SOLAR has successfully completed construction of the Postomino solar park in the municipality of Nosalin, located in the West Pomeranian Voivodeship of Poland. The state-of-the-art ground-mounted photovoltaic installation has a capacity of 90 MW and spans approximately 110 hectares. Once operational, it is expected to generate around 96 gigawatt hours of electricity annually – enough to meet the needs of 32,000 households.
Cable pooling ensures grid connection
Poland is facing a grid challenge. According to market experts, grid connection requests are increasingly being rejected by operators. Like many networks across Europe, Poland’s grid was not designed to accommodate a large number of decentralized energy producers. Although a multi-billion euro investment package has been approved, implementation is expected to take decades. Agri-PV systems and east-west oriented panel layouts can help reduce peak loads around midday. The Postomino solar park is part of a cable pooling project, where the new PV installation shares the high-voltage infrastructure of a neighboring wind farm. GOLDBECK SOLAR Polska is responsible for delivering the entire project – from planning and construction to grid connection.
South-facing layout proves most efficient for this site
According to GOLDBECK’s planning department, the south-facing orientation of the modules ensures optimal use of solar radiation and delivers the highest energy output – all while complying with legal limits on maximum installed capacity. Although this layout leads to a pronounced midday power peak, the system is designed to maintain high efficiency throughout the rest of the day and provides the highest overall yield in the long term.
East west was not an option
An east–west configuration would have produced a flatter generation curve with reduced midday peaks. However, at this specific location, it would result in lower annual energy output, making it a less economically viable option. The site’s grid connection challenge is effectively resolved through the cable pooling approach.
Synergies through cable pooling
Construction work on the Postomino solar park has been successfully completed – including the medium-/high-voltage substation (30/110 kV) and the approximately 8-kilometer-long 110 kV cable route for grid connection. Final testing, configurations, and preparations for commissioning are currently underway. Tobias Schüssler, COO of GOLDBECK SOLAR, explains: “With the Postomino solar park, we are sending a strong signal for a sustainable energy future in Poland. The combination of photovoltaics and wind power through cable pooling demonstrates how synergies can be efficiently leveraged to drive the energy transition forward. We’re proud to have reached this milestone together with our Polish team.”
Cutting carbon means cutting costs for energy users
With its expected annual power generation, the plant will reduce CO₂ emissions by approximately 61,223 tonnes. This is not only a significant contribution to the energy transition and the achievement of climate targets, but also a tangible economic advantage for users of clean solar energy, especially in light of rising CO₂ prices.
Manfred Gorgus