A 918MWh battery goes up in Romania as CEE storage deals cluster
Victoria Shinder2 min readConstruction is under way on a 918MWh battery energy storage system in Romania, one of the country's largest, Energy-Storage.news reported on 23 September 2026. The owner is the independent power producer Greenvolt; Renovatio Solar provides EPC services; CATL supplies the battery technology. The project is reported as completing within 12 months.
It arrives inside a cluster rather than alone. The same report gathers completions, financings and supplier deals across Central and Eastern Europe from Greenvolt, Renovatio, CATL, Eurowind, Renalfa, MOL Group, Tavion, MetaWealth and Enexus & Longi — another roughly 500MWh of projects moving. The announcements land days before the Energy Storage Summit Central and Eastern Europe on 6–7 October in Warsaw.
What it means
Twelve months from construction start to completion is the number to hold on to. At 918MWh that is a pace only possible where the batteries are containerised, the supplier is shipping at volume and the grid connection is already settled. Compare it with any transmission line or generation asset of comparable value and the schedule is in a different category — which is exactly why storage keeps arriving in markets before the network reinforcement that was supposed to precede it.
The clustering is the other signal, and it is partly an artefact. A wave of announcements a fortnight before a regional summit is not evidence of a wave of decisions; developers time news to where the buyers will be. What the list does show is breadth — nine named parties across several countries — which is harder to stage than a single flagship.
We are not drawing a conclusion about CEE storage economics from this. A supplier deal is a statement of intent with a contract behind it, and the thing that will matter in twelve months is how many of these are energised rather than announced.