Bulgaria has already awarded 14+ GWh of BESS capacity, significantly outpacing the official 1.28 GW storage target for 2030, says Aurora Energy Research
Government-backed schemes are accelerating BESS deployment, with several projects scheduled for 2026 commissioning
Battery projects are increasingly supported by wholesale and balancing market arbitrage, reinforcing Bulgaria’s position as an emerging European storage hub, according to the analysts
Bulgaria is emerging as one of Europe’s most active battery energy storage system (BESS) markets as the country’s storage build-out accelerates far beyond official planning assumptions.
According to Aurora Energy Research, while Bulgaria’s National Energy and Climate Plan (NECP) sets a 2030 target of 1.28 GW of battery storage, the market has already awarded more than 14 GWh of BESS capacity, signaling a much larger and faster-scale expansion than expected.
In its e-book Bulgaria: Europe’s Emerging BESS Powerhouse, Aurora says much of this growth is being driven by the state-backed auction program. Under the Recovery and Resilience Plan (RRP), Bulgaria has allocated around 1.18 GW of co-located solar and storage projects, all of which are required to be operational by March 2026, to support the near-term deployment of hybrid assets.
Standalone storage has expanded even more rapidly through the country's RESTORE program. The first auction for standalone storage, originally targeting 3 GWh, resulted in allocations of roughly 10 GWh. Strong investor demand can be attributed to grant support covering up to 50% of eligible investment costs. Most of these projects have already been contracted and scheduled for commissioning in 2026, as per the report.
Another RESTORE auction round launched in 2025 added close to 4 GWh of capacity, supported by €118 million in grants across 31 projects. These projects are expected to be commissioned by mid-2026.
Aurora notes that Bulgaria’s BESS market is increasingly driven by energy trading and arbitrage in wholesale and balancing markets, rather than long-term contracted revenues. The country’s intraday market enables continuous trading until minutes before delivery, which helps the case of storage.
Rising price volatility from growing renewable penetration is improving revenue potential for BESS, particularly for longer-duration storage assets. Analysts believe that recent market rule changes have also strengthened the framework for battery participation in electricity markets, improving investment visibility for investors.
Aurora ranks Bulgaria among the top 3 most attractive European markets for co-located solar PV and battery storage projects, saying that the country offers some of the highest expected returns in Europe for projects commissioning around 2029.
Aurora also forecasts that more than 3 GW of co-located renewable energy capacity will be operational in Bulgaria by 2030, supported by strong market fundamentals and a favorable development environment.
The Aurora e-book is available for free download on its website.