140 MW floating solar plant in Slovenia planned to power 35,000 homes

Slovenia’s state-owned power company, Holding Slovenske Elektrarne (HSE), is developing a 140 MW floating solar power plant on Lake Druzmirje, a former lignite mining lake near Sostanj. With an estimated investment of approximately $116.6 million, funded through HSE’s resources, loans, and the EU’s Just Transition Fund, the project aims to become Europe’s largest floating solar installation, surpassing the current 74.3 MW record in France. Construction is expected to start by Q3 2026, with electricity generation beginning in Q1 2027. The plant is projected to produce up to 140 GWh annually, enough to power around 35,000 Slovenian households, and will also transform the lakeside into a recreational and social space for the local community. This project marks a significant milestone in Slovenia’s renewable energy landscape, which has so far been dominated by residential and commercial solar installations. The PSE Druzmirje