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Slovenia Launches Tender for Solar-Plus-Storage Project
Slovenian state-owned energy company HSE has initiated a tender for a solar-plus-storage project, combining a 1.38 MW solar power plant with a 1.25 MW/5 MWh battery energy storage system. The project will be developed on a former landfill site and is partly funded by the EU’s Just Transition Fund, with completion planned for 2027. The deadline for applications is November 19.
Slovenian state-owned energy company Holding Slovenske Elektrarne (HSE) has launched a tender for a project that integrates solar power generation with battery energy storage. The initiative involves the construction of a 1.38 MW solar power plant, which will be connected to a 1.25 MW/5 MWh battery energy storage system (BESS).
The project is slated for development within the Kamnolom Zagorje area, a former municipal waste landfill situated in the municipality of Zagorje ob Savi, in central Slovenia. This forms part of HSE’s broader strategy to develop renewable energy projects on brownfield sites across Slovenia’s Zasavje region. The selected contractor will be tasked with the design, supply, assembly, testing, and connection of this hybrid plant.
HSE announced securing the building permit for the project in late September. At that time, it was stated that a portion of the project's funding would be provided by the EU’s Just Transition Fund. In addition to the energy infrastructure, the project also includes measures to enhance stormwater drainage and reduce its seepage into the landfill body, contributing to appropriate and sustainable management of the area. The investment is planned for 2027.
Prospective bidders can submit questions requesting further information until November 10. The deadline for electronic applications is November 19. For context, Slovenia’s cumulative solar capacity reached 1.57 GW by the end of last year, following the installation of 146.5 MW in 2025.
This report is based on information from pv magazine.
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