Romania’s battery energy storage sector is moving from an earlier project pipeline phase into financed construction and large-scale deployment. The national energy regulator reports 143 advanced battery storage projects with a combined capacity of 9,147 MW in development. It also cites 36 projects, totalling about 2,050 MW, expected to reach operation before the end of 2026. Installed battery capacity had reached nearly 600 MW by the end of 2025.
The regulator’s figures indicate a shift toward projects that are progressing beyond early stages. As more systems enter operation, investors are placing additional focus on how future market competition could influence long-term storage revenues. This comes as the country’s installed base expands and new capacity moves through commissioning.
Romania’s market economics for battery storage
Romania is among Europe’s most attractive locations for battery storage revenue opportunities, according to analysis by ENTSO-E. The country ranks as the fourth-most attractive battery market on the continent, with average revenues of approximately EUR 792 per MW per day. The same analysis places Hungary, Bulgaria and Greece ahead of Romania in the ranking.
The revenue outlook is linked to intraday electricity price spreads driven by solar generation and grid constraints. Daytime solar output tends to push prices lower, while limited storage availability and cross-border transmission constraints support higher prices during evening peak demand. Battery operators can earn from both energy arbitrage and balancing services, though expanding deployment is expected to intensify competition.
EU Modernisation Fund support and smart meter rollout
Public funding is a key driver for accelerating storage deployment in Romania. The country has committed EUR 250 million from the EU Modernisation Fund, including EUR 150 million for stand-alone battery energy storage systems and EUR 100 million for a nationwide smart electricity meter rollout. Battery project support will be awarded through competitive tenders.
The funding framework caps assistance at EUR 69,000 per MWh, with a maximum of EUR 15 million per developer. The programme targets at least 2,174 MWh of new storage capacity. In parallel, planned deployment of more than 800,000 smart meters is intended to improve electricity settlement, network monitoring and loss management.
The smart meter roll-out is also expected to create additional opportunities for demand-side flexibility. These measures are designed to support system operations as new generation and storage assets come online. Together with tender-based financing, they form part of the policy approach to scaling flexibility.
Financing approvals and commissioned projects
International finance institutions are increasing activity in Romania’s storage market alongside EU-backed programmes. The International Finance Corporation (IFC) has approved EUR 48.5 million for the second phase of Aukera Energy’s Gura Ialomitei project. The expansion adds 100 MW/200 MWh, bringing the project total to 250 MW/500 MWh.
Nofar Energy has commissioned the 146 MW Ghimpati solar power plant while integrating battery storage at the site. Across Romania, Nofar is developing a renewable portfolio comprising 849 MW of solar generation and 2.27 GWh of battery storage. Procurement contracts worth approximately EUR 80 million cover battery installations at the Ghimpati and Iepuresti projects with a combined capacity of 860 MWh.
Batteries paired with renewables and grid-connected assets
Battery systems are increasingly being planned as part of integrated renewable developments rather than standalone additions. Tinmar Energy and EC Oltenia plan battery storage alongside four solar power plants totalling nearly 395 MW. The projects are valued at approximately EUR 243–260 million.
The financing mix includes Modernisation Fund support, shareholder capital and commercial bank loans. PPC Renewables is pursuing battery storage at its Fantanele-Vest wind farm as part of an approach that combines generation assets with flexible storage capacity tied to existing grid connections.
Renewables pipeline growth shaping storage needs through 2035
Romania’s renewable pipeline continues to expand ahead of grid connection milestones. The country has around 1,530 renewable energy projects, representing more than 91 GW of approved export capacity awaiting connection. Transmission system operators estimate that about 30.4 GW of new renewable generation could enter commercial operation between 2026 and 2035.
Battery storage is therefore positioned as a core element for managing system constraints associated with variable generation growth. It is described as supporting transmission congestion management and balancing output from renewable sources. It is also linked to reducing the impact of falling electricity prices during periods of high solar production.
Evolving revenue expectations as two-hour systems expand
The sector’s growth prospects are accompanied by expectations that market conditions may change as more capacity is added. Two-hour battery systems currently benefit from significant evening price spreads that support merchant revenues. Continued expansion is expected to gradually reduce these price differences.
This shift would compress merchant returns while increasing attention on investment parameters such as declining arbitrage margins, balancing-market saturation, battery degradation and augmentation costs. Potential delays in obtaining grid connections are also highlighted as a factor affecting project outcomes.
The source indicates that projects combining batteries with renewable generation, securing advantageous grid locations or using long-term capacity agreements may be more resilient than developments relying only on short-term wholesale volatility. Industrial electricity consumers are also cited as another category where such configurations could provide stability.
