Romania’s battery energy storage market is rapidly evolving from a pipeline of proposed projects into a sector supported by substantial financing and active construction. According to the national regulator, 143 advanced battery storage projects with a combined capacity of 9,147 MW are currently under development, while 36 projects representing approximately 2,050 MW are expected to become operational before the end of 2026. By the close of 2025, installed battery storage capacity had already approached 600 MW. As deployment accelerates, the market’s focus is shifting from the volume of planned projects to how quickly storage revenues may decline as competition increases.
Current market conditions continue to provide strong revenue opportunities for battery operators. An analysis by ENTSO-E ranked Romania as the fourth most attractive battery storage market in Europe, with average revenues of around EUR 792 per MW per day, behind only Hungary, Bulgaria and Greece. These earnings are largely driven by significant intraday electricity price differences, where abundant solar generation depresses daytime prices while limited storage capacity and cross-border interconnections create higher prices during evening peak demand. Batteries are well positioned to profit from these market conditions through energy arbitrage and balancing services, although both revenue streams are expected to become increasingly competitive as additional storage projects enter operation.
Government support is playing a major role in accelerating deployment. Romania has allocated EUR 250 million from the EU Modernisation Fund, including EUR 150 million dedicated to stand-alone battery storage projects and EUR 100 million for the rollout of smart electricity meters. Financial support for storage projects will be awarded through competitive procedures, with funding capped at EUR 69,000 per MWh and EUR 15 million per company, targeting the installation of at least 2,174 MWh of new storage capacity. At the same time, the planned installation of more than 800,000 smart meters will improve network monitoring, settlement accuracy, loss management and create greater opportunities for demand-response programmes.
Private investors and international financial institutions are also expanding their commitments to the Romanian storage market. The International Finance Corporation (IFC) has approved EUR 48.5 million to finance the second phase of Aukera Energy’s Gura Ialomitei project. The expansion will add 100 MW/200 MWh of battery capacity, increasing the site’s total size to 250 MW/500 MWh. Meanwhile, Nofar Energy has commissioned the 146 MW Ghimpati solar power plant and is currently integrating battery storage at the site. Across Romania, the company is developing a renewable portfolio that includes 849 MW of solar generation and 2.27 GWh of battery storage, supported by procurement contracts worth approximately EUR 80 million covering battery installations at the Ghimpati and Iepuresti projects with a combined capacity of 860 MWh.
Battery storage is increasingly being integrated into broader renewable energy developments rather than being deployed as a stand-alone technology. Tinmar Energy and EC Oltenia plan to install battery systems alongside four solar power plants with a combined generation capacity of nearly 395 MW. The overall solar investment, valued at approximately EUR 243-260 million, will be financed through the EU Modernisation Fund, shareholder capital and commercial bank financing. At the same time, PPC Renewables is developing battery storage for its Fantanele-Vest wind farm, reflecting a wider industry trend of maximizing the value of existing grid connections through integrated renewable and storage solutions.
The country’s renewable development pipeline continues to expand at an unprecedented pace. Romania currently has around 1,530 renewable energy projects, representing more than 91 GW of approved export capacity, awaiting grid connections. Transmission system operators expect approximately 30.4 GW of new renewable generation to enter service between 2026 and 2035. Under these conditions, battery storage is no longer viewed as an optional addition but as a critical component of grid infrastructure, essential for managing network congestion, balancing fluctuations in renewable generation and reducing the impact of declining electricity prices during periods of high solar output.
Despite the favourable outlook, investors are increasingly recognising the importance of distinguishing between the attractive economics available during the market’s early growth phase and the realities of a more mature storage sector. While two-hour battery systems can currently capture substantial value from evening price spikes, the continued expansion of storage capacity is expected to gradually reduce these price differences and compress merchant revenues. As a result, long-term investment models should account for declining arbitrage opportunities, balancing market saturation, battery degradation, future augmentation costs and potential grid-connection delays. Projects that combine storage with renewable generation, secure favourable network locations, benefit from long-term capacity agreements or supply industrial consumers are likely to prove more resilient than developments relying solely on short-term wholesale market volatility.
