en.Wedoany.com Reported - Sungrow and Sunotec have commissioned a 150 MW/600 MWh battery energy storage system in Nova Zagora, Bulgaria. The project is developed and owned by independent power producer Enery, utilizing Sungrow's liquid-cooled energy storage technology PowerTitan 2.0, and is financed through Bulgaria's national RESTORE program under the Ministry of Energy.
This facility is one of the largest battery energy storage projects in Bulgaria, designed to enhance grid flexibility, support renewable energy integration, and improve power system resilience. The project also marks the first major milestone under a broader energy storage cooperation announced by the partners at Intersolar 2025, which aims to build up to 800 MWh of battery storage capacity in the Nova Zagora region, with further expansion to 1 GWh currently under consideration.
Anastasios Gkinis, Vice President of Sungrow Europe (responsible for Southeast Europe, Central and Eastern Europe, and the CIS region), stated that the project reflects the trend of energy storage becoming central to Southeast Europe's energy system, providing solutions that support grid stability through PowerTitan 2.0. Kaloyan Velichkov, Founder and CEO of Sunotec, added that the two parties are advancing key energy storage projects in Bulgaria by combining infrastructure and execution capabilities with long-term system thinking, helping the country transition toward a more resilient energy deployment. Petya Dimova, Head of Portfolio Optimization at Enery, noted that the commencement of commercial operations for the Nova Zagora BESS marks the beginning of the asset's value creation journey. Through advanced optimization and active participation in the electricity and balancing markets, it will provide critical flexibility to the grid while supporting the efficient integration of renewable energy.
The Nova Zagora project is part of a series of energy storage projects jointly implemented by Sungrow and Sunotec in Bulgaria. Over the next two months, a total of 2.2 GWh of battery storage capacity is planned to be operational, with total capacity expected to reach 3 GWh by the end of 2026. Planned projects include Knizhnikovo Phase I, a hybrid BESS and solar PV project developed by Enery with a capacity of 100 MW/200 MWh. The Nova Zagora project is one of Bulgaria's first utility-scale standalone battery storage facilities to fully comply with national grid regulations. With the phased commissioning of a total of 3 GWh of battery storage capacity by the end of 2026, the two partners are contributing to renewable energy integration and grid stability in the region.
The PowerTitan 2.0 used in the Nova Zagora project is Sungrow's liquid-cooled energy storage solution. Its compact system design optimizes land use and enables rapid installation, while advanced cooling technology ensures temperature control, cost-effectiveness, and safe operation. This product has been successfully deployed in multiple European markets and has proven its reliability under various grid and market conditions.
Sungrow is a global leader in renewable energy technology, having pioneered sustainable power solutions for 29 years. As of December 2025, it has installed 1,000 GW of power electronic converters worldwide. The company has been rated by BloombergNEF as the world's most bankable solar inverter and energy storage company, with over 520 service outlets. Founded in 2012, Sunotec is an international system integrator for large-scale renewable energy infrastructure, having delivered over 680 solar PV installations across Europe and beyond, with a total installed capacity exceeding 15 GW, as well as 6 GWh of battery storage projects, employing over 2,000 professionals globally. Enery is an independent power producer with an operational installed capacity of 2 GW, generating 766 GWh of clean electricity annually—enough to power over 1,002,121 households—while avoiding approximately 625,069 tonnes of CO2 emissions each year, with a project pipeline of nearly 10 GW across 10 countries in Central and Eastern Europe.
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