Slovenian energy company buys battery storage systems in Bulgaria

GEN-I Invest, the investment arm of the GEN-I Group focused on renewable energy, has completed the purchase of three battery energy storage systems in Bulgaria, marking the company’s first move into a market outside Slovenia. The three installations, located in Belovo, Momchilgrad, and Parvomay, have a combined capacity of 30 MW and can store 76 MWh of electricity. The deal closed in June 2026 and brings GEN-I Invest’s total battery storage portfolio to 42 MW and 100 MWh.

With the acquisition, GEN-I Group becomes one of the larger regional players in battery storage operations. The company says it will manage the participation of these systems in Bulgaria’s energy markets, which it expects will help stabilize the country’s power grid as it absorbs more electricity from wind and solar sources.

The Bulgarian purchase builds on a series of international investments GEN-I Group began in 2022, when it started building solar power plants in North Macedonia. Those projects, completed in 2022 and 2024, now total 29 MW of capacity. Oversight of the group’s international investments later passed to GEN-I Invest, a subsidiary set up to focus on Central and South-Eastern Europe, with a particular emphasis on battery storage and large-scale renewable energy projects.

Last year, GEN-I Invest acquired a battery system in Kidricevo, Slovenia. The Bulgarian deal is its first venture beyond national borders and represents a notable step in the company’s expansion plans. GEN-I Invest has said it intends to add a further 100 MW of battery capacity through additional acquisitions before the end of 2026.

Battery storage is increasingly viewed as central to managing the shift toward renewable energy, since it allows grids to absorb larger volumes of variable solar and wind power while smoothing out fluctuations in supply and demand. As GEN-I Group continues to build out its holdings in renewables and storage across the region, the company is positioning itself as a more active participant in shaping how Europe’s energy markets adapt to that transition.