BESS in Romania: real opportunity or a bubble of projects?
The spread driving the investment case
On 19 June 2026, Romania hit a peak where solar covered roughly 70% of national consumption. The result wasn’t quite what the market expected: at 11:00 and 12:00, the day-ahead price dropped to around 48–60 RON/MWh. At 21:00, when solar output was near zero, the price climbed to about 1,360 RON/MWh nearly 23 times higher.
Most of the cheap midday power was exported rather than stored. By evening, the system was back on much more expensive sources.
For any asset able to buy at 60 and sell at 1,360, that gap is the business model.
It’s not an isolated case. A separate April 2026 analysis showed, for an ordinary delivery day, an average day-ahead price of €36.63/MWh, but with a peak trough of €21.28/MWh and an off-peak high of €94.54/MWh the same structural split between “cheap at noon” and “expensive overall.”
Serious capital is already moving in
The strongest argument isn’t theoretical real money is already backing this thesis:
• Premier Energy Group began construction in May 2026 on a 200 MW / 400 MWh BESS in eastern Romania, securing up to €100 million in green financing from ČSOB explicitly citing the arbitrage opportunity from increasingly frequent and deeper negative prices.
• El-Mor (Israel) is developing two delivery-ready projects of 203 MW / up to 800 MWh each (Bradu and Brazi), both already holding an ATR, targeting commissioning in the first half of 2027.
• RGREEN Invest has committed to a 230 MW hybrid project in Giurgiu, combining 150 MW of solar with 80 MW of storage, in two phases.
On the public funding side, the €150 million scheme approved via Energy Ministry Order no. 745/16.07.2026 offers up to €15 million per company, aid intensity of up to 100% of eligible costs, and a cap of €69,000/MWh installed valid through the end of 2030.
Where the “rain of projects” risk shows up
This is the less comfortable part of the conversation. Market analyses (AEI, April 2026) point out that Romania is set to add roughly 8,000 MW of additional solar capacity, producing about 10 TWh/year nearly a fifth of the country’s consumption.
The problem isn’t the volume, it’s how brutally concentrated it is between 10:00 and 16:00, exactly when demand isn’t at its peak and there’s already output from existing parks and prosumers.
Those analyses’ conclusion: the problem isn’t solar, it’s the system it’s being dumped into. Romania has plenty of projects. What’s missing is coordination between generation, grid and storage.
On top of that, there’s an institutional issue: connection capacity reserved through ATRs frequently exceeds the grid’s actual capacity. When an area has, say, 1,000 MW of real capacity but 5,000 MW of issued or reserved requests, a parallel “paper” market appears immature projects block capacity while real ones wait in line.
For a standalone BESS project, there’s an added legal-technical risk: an ATR obtained for a PV configuration doesn’t automatically cover the battery. The construction permit, environmental approval and ANRE licence need to explicitly mention storage otherwise the battery only exists in the financial model, not in the paperwork that matters for financing.
What separates a winning project from a “paper” one
From our experience administering ATRs and structuring RTB projects, the real difference isn’t project size it comes down to a few concrete elements:
1. The ATR actually covers storage, not just the PV/wind component verified, not assumed.
2. The connection point sits near a substation that genuinely has free capacity now, not just capacity reserved on paper somewhere in a queue.
3. The revenue model is diversified not just simple day/night arbitrage, but also access to balancing markets (FCR/aFRR), where the system’s growing volatility pays separately from the day-ahead market.
4. The paperwork is consistent across the ATR, construction permit, environmental approval and financial model the gaps between these are exactly what a serious due diligence uncovers, and what it blocks on.
The takeaway for an investor
BESS in Romania is neither a bubble nor a safe bet just because it carries the “storage” label. The market is maturing fast, the price spreads justify the investment, and the institutional capital already moving in confirms the thesis. But the queue of projects that will never reach commissioning is growing just as fast.
A teaser looks good regardless of the project. The ATR, the connection agreement, and the permits that explicitly mention the battery are what tell the truth.
__
BRES ENERGY offers structured, NDA-protected access to the Data Room for the storage projects in our portfolio including verification of ATR and permitting documentation before any commitment.
On 19 June 2026, Romania hit a peak where solar covered roughly 70% of national consumption. The result wasn’t quite what the market expected: at 11:00 and 12:00, the day-ahead price dropped to around 48–60 RON/MWh. At 21:00, when solar output was near zero, the price climbed to about 1,360 RON/MWh nearly 23 times higher.
Most of the cheap midday power was exported rather than stored. By evening, the system was back on much more expensive sources.
For any asset able to buy at 60 and sell at 1,360, that gap is the business model.
It’s not an isolated case. A separate April 2026 analysis showed, for an ordinary delivery day, an average day-ahead price of €36.63/MWh, but with a peak trough of €21.28/MWh and an off-peak high of €94.54/MWh the same structural split between “cheap at noon” and “expensive overall.”
Serious capital is already moving in
The strongest argument isn’t theoretical real money is already backing this thesis:
• Premier Energy Group began construction in May 2026 on a 200 MW / 400 MWh BESS in eastern Romania, securing up to €100 million in green financing from ČSOB explicitly citing the arbitrage opportunity from increasingly frequent and deeper negative prices.
• El-Mor (Israel) is developing two delivery-ready projects of 203 MW / up to 800 MWh each (Bradu and Brazi), both already holding an ATR, targeting commissioning in the first half of 2027.
• RGREEN Invest has committed to a 230 MW hybrid project in Giurgiu, combining 150 MW of solar with 80 MW of storage, in two phases.
On the public funding side, the €150 million scheme approved via Energy Ministry Order no. 745/16.07.2026 offers up to €15 million per company, aid intensity of up to 100% of eligible costs, and a cap of €69,000/MWh installed valid through the end of 2030.
Where the “rain of projects” risk shows up
This is the less comfortable part of the conversation. Market analyses (AEI, April 2026) point out that Romania is set to add roughly 8,000 MW of additional solar capacity, producing about 10 TWh/year nearly a fifth of the country’s consumption.
The problem isn’t the volume, it’s how brutally concentrated it is between 10:00 and 16:00, exactly when demand isn’t at its peak and there’s already output from existing parks and prosumers.
Those analyses’ conclusion: the problem isn’t solar, it’s the system it’s being dumped into. Romania has plenty of projects. What’s missing is coordination between generation, grid and storage.
On top of that, there’s an institutional issue: connection capacity reserved through ATRs frequently exceeds the grid’s actual capacity. When an area has, say, 1,000 MW of real capacity but 5,000 MW of issued or reserved requests, a parallel “paper” market appears immature projects block capacity while real ones wait in line.
For a standalone BESS project, there’s an added legal-technical risk: an ATR obtained for a PV configuration doesn’t automatically cover the battery. The construction permit, environmental approval and ANRE licence need to explicitly mention storage otherwise the battery only exists in the financial model, not in the paperwork that matters for financing.
What separates a winning project from a “paper” one
From our experience administering ATRs and structuring RTB projects, the real difference isn’t project size it comes down to a few concrete elements:
1. The ATR actually covers storage, not just the PV/wind component verified, not assumed.
2. The connection point sits near a substation that genuinely has free capacity now, not just capacity reserved on paper somewhere in a queue.
3. The revenue model is diversified not just simple day/night arbitrage, but also access to balancing markets (FCR/aFRR), where the system’s growing volatility pays separately from the day-ahead market.
4. The paperwork is consistent across the ATR, construction permit, environmental approval and financial model the gaps between these are exactly what a serious due diligence uncovers, and what it blocks on.
The takeaway for an investor
BESS in Romania is neither a bubble nor a safe bet just because it carries the “storage” label. The market is maturing fast, the price spreads justify the investment, and the institutional capital already moving in confirms the thesis. But the queue of projects that will never reach commissioning is growing just as fast.
A teaser looks good regardless of the project. The ATR, the connection agreement, and the permits that explicitly mention the battery are what tell the truth.
__
BRES ENERGY offers structured, NDA-protected access to the Data Room for the storage projects in our portfolio including verification of ATR and permitting documentation before any commitment.