Activity in Central and Eastern Europe (CEE) continues to accelerate, with two separate c.600MWh projects completed in Bulgaria by Solarpro & CATL and Sunotec & Sungrow, plus around 800MWh of capacity progressed across Romania, Estonia, Lithuania, and Finland.
Solarpro and CATL complete 602MWh Bulgaria system with ‘zero-degradation’ tech
EPC firm Solarpro Technology has commissioned a 602MWh battery energy storage system (BESS) in Bulgaria in partnership with lithium-ion OEM CATL.
CATL provided its ‘zero-degradation’ 6MWh Tener BESS units for the project, making this one of the first large-scale deployments using it that we are aware of. When launched it promised five years of no battery cell degradation.
Solarpro said it was the EPC contractor for the project but did not reveal the project’s owner when announcing the news on LinkedIn yesterday (17 June), assuming it is not Solarpro itself.
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Large-scale BESS in Bulgaria primarily participate in the day-ahead and intraday national electricity markets, but the country’s market has been kickstarted by grants under Bulgaria’s portion of the EU-wide Recovery and Resilience programme.
Within Bulgaria, the scheme is called National Infrastructure for Storage of Electricity from Renewable Sources (RESTORE).
Sunotec and Sungrow revealed as suppliers for Enery’s 600MWh Bulgaria project
System integrator Sunotec and BESS and inverter firm Sungrow have revealed that they deployed a 150MW/600MWh BESS in Nova Zagora, Bulgaria, for project owner Enery, an IPP.
Enery announced commissioning of it in May. Sungrow provided its PowerTitan 2.0 AC block BESS product for the project, which received RESTORE funding.
Bulgaria in particular is a hotspot of BESS activity in Europe, with 2.2GWh of capacity online across its four largest projects alone, with many more smaller ones up and running too and coming down the pipe. Two c.500MWh ones have been commissioned in the past year too, by owners ContourGlobal and Advance Green Energy.
BESS projects progressed in Estonia, Lithuania, Latvia and Finland
In the rest of the CEE region and Finland, several large-scale BESS projects have progressed with financing, supply deals or construction milestones.
In Romania, IPP R.Power has secured a €57 million finance package from the European Bank for Reconstruction and Development (EBRD), PKO Bank Polski (PKO BP) and Bank Gospodarstwa Krajowego (BGK) for its 127MW/254MWh Scorniçesti BESS. R.Power started building the project a little under a year ago, and enlisted GEN-I to optimise it in February. It will come online in late 2026/2027.
Staying in Romania, EPC Electrogrup has completed the first 150MW/300MWh phase of a larger 250MW/500MWh BESS in Romania for owner Aukera Energy. Aukera secured project finance in November 2025 and the project will be completed in full this year.
In Estonia, the 100MW/200MWh Zirgu BESS in Tsirguliina, Valga County, will use BESS from LG Energy Solution manufactured in Poland. Construction started on the system in February, for commissioning in April 2027.
In Lithuania, IPP European Energy will soon commission a 25MW/65MWh BESS in Anykščiai, co-located with a 78.5MW solar plant, one of the first hybrid projects in the country.
In Finland (not technically in the CEE region), power solutions firm Merus Power has agreed a deal with project owner WPD Söderskogen Vindpark Oy so supply a 30MW/60MWh BESS project. The value of the agreement is approximately €10 million and it will be completed in 2027.
Our publisher Solar Media will hold the Energy Storage Summit Central Eastern Europe (CEE) 2026 on 6-7 October in Warsaw, Poland. Use our code ESN20 for a 20% discount on tickets.
