Slovenian energy market operator Borzen has introduced a funding scheme intended to speed up the deployment of battery energy storage systems (BESS) by businesses and public-sector organisations. The programme offers a total of 10 million euros in non-repayable grants. The stated focus is on investments that improve energy efficiency, enhance system flexibility, and strengthen energy independence.
Grant terms for eligible battery storage projects
Under the initiative, eligible applicants may receive support covering up to 45% of total eligible project costs. Funding is capped at 225 euros/kWh of installed storage capacity. Borzen said the design of the scheme is meant to reduce upfront investment barriers for organisations adopting battery storage technologies.
The programme is open to legal entities and public institutions, with direct beneficiaries of the state budget excluded. It covers newly installed battery storage systems, hybrid inverters, and associated electrical infrastructure required for operation. The scheme is retroactive, reimbursing completed projects rather than supporting future investments.
Connection and approval requirements
To be eligible, 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. Eligible expenses include investments made from 1 October 2025 onward.
Borzen said the programme is aimed at encouraging broader adoption of clean energy technologies and reducing dependence on fossil fuels. It also links the scheme to improving the competitiveness of Slovenian businesses through smarter energy management. The operator added that 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.
