Funding terms for battery energy storage projects
Slovenian energy market operator Borzen has introduced a funding scheme to speed up the deployment of battery energy storage systems (BESS) among businesses and public-sector organizations. The programme offers a total of 10 million euros in non-repayable grants. Support is intended to back investments that improve energy efficiency, increase system flexibility, and strengthen energy independence.
Eligible applicants may receive funding covering up to 45% of total eligible project costs. The grant level is capped at 225 euros/kWh of installed storage capacity. The scheme is structured to reduce upfront investment barriers for organizations adopting battery storage technologies.
Eligible entities, equipment, and retroactive reimbursement
The initiative is open to legal entities and public institutions, excluding direct beneficiaries of the state budget. It covers newly installed battery storage systems along with hybrid inverters. Related electrical infrastructure required for operation is also included among supported items.
The programme operates on a retroactive basis, reimbursing projects that have already been completed rather than financing future installations. To qualify, the energy storage system must have been connected to the electricity grid between 1 January and 31 July of this year. Applicants must also hold a valid grid connection approval issued after 1 January 2024.
Timing of eligible investments and stated objectives
Eligible expenses include investments made from 1 October 2025 onward. This eligibility window allows companies that recently completed storage installations to recover part of their costs through the scheme. Borzen said the programme is designed to encourage wider adoption of clean energy technologies.
Borzen also linked the measure to reducing dependence on fossil fuels and improving the competitiveness of Slovenian businesses through smarter energy management. The operator said promoting battery storage deployment is intended to increase grid flexibility and support smoother integration of higher shares of renewable energy sources into the electricity system.
