Romanian infrastructure group E-Infra is preparing to develop a large battery energy storage facility in Satu Mare County, moving ahead with the first stage of a planned storage complex that company documents show will have a maximum power of 95.458 MW.
Project and authorisation
The project, described as IS Roșiori – stage one, is being promoted by Nova Power & Gas, a unit within E-Infra controlled by businessman Teofil Mureșan. Romania’s energy regulator, ANRE, is due to consider a draft decision this week that would grant an establishment authorisation for the site located in Valea Vinului. If approved, the authorisation would remain valid until 30 November 2027.
Public filings indicate the planned facility will connect to Transelectrica’s network through the Roșiori substation. Nova Power & Gas also intends to develop a photovoltaic park at the same site, signalling an integrated renewables-plus-storage approach that is becoming common as countries add intermittent generation to their grids.
Technical details and context
The company has not publicly disclosed the storage duration for the Roșiori battery but the project is expected to use a two-hour configuration. That would imply a potential energy capacity in the order of roughly 190 MWh if operated at full power for two hours, although Nova Power & Gas has not confirmed an exact MWh figure.
| Item | Detail |
|---|---|
| Planned maximum power | 95.458 MW |
| Expected storage configuration | Two-hour (not officially disclosed) |
| Connection point | Roșiori substation (Transelectrica) |
Operator record and national growth
E-Infra is already among Romania’s largest battery storage operators. Nova Power & Gas commissioned a 200 MW/400 MWh battery facility at Florești, Cluj County, in December 2025 — at the time the country’s largest operational battery. That complex comprises 45 battery containers, 30 transformation points and a 110/33 kV substation, and is used in system services and balancing markets.
The group reports four operational battery facilities with a combined power of 150 MW. At a national level, Transelectrica data showed 989 MW of installed storage power and 1,975 MWh of storage capacity as of 1 August 2026. The data also show Romania’s battery energy capacity has expanded rapidly in recent months, nearly doubling available MWh since the end of April.
Why this matters
Battery storage helps system operators manage volatility created by increasing shares of wind and solar. Two-hour batteries are typically used to shift energy, provide frequency response and participate in balancing markets. For communities and workforces around project sites, such developments can mean construction jobs and ongoing operations roles, as well as local infrastructure activity.
- Grid flexibility: additional battery power eases the integration of intermittent renewable generation.
- Market participation: facilities can earn revenue in system services and balancing markets.
- Local benefits: construction-phase employment and potential longer-term operations roles.
While this project is sited in north-west Romania, the pattern of rapid storage deployment is relevant to energy planners and industry observers beyond the country, as utilities and regulators worldwide consider how best to pair renewables with dispatchable flexibility.
Next steps and timelines
The immediate milestone is ANRE’s consideration of the draft establishment authorisation. If the authorisation is granted, the company will have until the end of November 2027 to advance the project under the current permit window. No construction start date or commissioning timetable has been published.
Nova Power & Gas’s dual plan for storage alongside a photovoltaic park at Valea Vinului follows a common model: co-locating generation and storage reduces grid connection costs and can optimise asset dispatch for revenue and system support.
For regions transitioning away from fossil-fuel baseloads, large-scale batteries such as Roșiori’s proposed first stage are becoming a standard tool to smooth supply and shore up reliability. Market participants will watch ANRE’s decision closely for signals about Romania’s regulatory approach to the next wave of storage projects.
Reporting based on public notices and industry data circulated by Economica.net and Transelectrica.
