Nova Zagora, Bulgaria – 26 May 2026
Enery officially inaugurated the Nova Zagora Battery Energy Storage System (BESS), marking a major milestone for Bulgaria’s energy transition and regional energy security. The project, with a capacity of 150 MW / 601 MWh, is the largest standalone battery storage facility in the country, and one of the most significant projects of its kind in Europe.
The opening ceremony gathered representatives from the energy sector, financial institutions, technology providers, and local authorities to celebrate the successful delivery of a project that sets a new benchmark for energy infrastructure in the region.
The Nova Zagora BESS was developed in less than one year and represents a landmark achievement for the regional renewable energy market. The facility will play a critical role in supporting grid flexibility, integrating renewable energy, and enhancing the stability of Bulgaria’s electricity system.
“This project demonstrates that large-scale battery storage is no longer a concept for the future — it is already transforming the energy landscape today,” said Richard König, CEO and Founder of Enery. “Nova Zagora is proof that with strong partnerships, innovative financing, and technological excellence, the region can deliver world-class energy infrastructure at unprecedented speed.”
“The Nova Zagora BESS is more than a landmark infrastructure project — it is a clear signal that Southeast Europe is entering a new era of energy flexibility and resilience. By combining innovative financing, advanced technology, and strong partnerships, we are helping build the foundation for a more secure and sustainable power system in the region.” – Severin Vartigov, Chief Commercial Officer and Country Manager for Bulgaria at Enery
The project was financed through a pioneering green financing structure backed by a partnership with Vitol, creating a first-of-its-kind financing model for battery storage in the region. The project financing was supported by DSK Bank (OTP Group), while Sunotec served as the EPC contractor, and Sungrow supplied battery technology.
The Nova Zagora BESS will provide critical balancing services to the electricity grid and support the accelerated integration of renewable energy sources across Southeast Europe. As battery storage becomes increasingly important for energy systems worldwide, the project positions Bulgaria as a leading regional market for innovative clean energy solutions.
The project also received financing under Procedure BG-RRP-4.034, “National Infrastructure for Storage of Electricity from Renewable Sources” (RESTORE), part of Bulgaria’s Recovery and Resilience Plan, which supports the development of strategic energy storage infrastructure in the country.
About Enery
Enery is an independent power producer committed to providing its customers with reliable, affordable, and long-term green energy solutions. The company operates a diversified portfolio with 2 GW under construction and in operation, generating 766 GWh of clean electricity annually – enough to power more than 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, Enery is playing a major role in advancing the energy transition in the region. In addition to developing, constructing, and operating renewable energy projects, Enery is also a leader in optimizing revenue streams for utility-scale generation and storage assets, managing more than 2.5 GWh of third-party battery storage capacity. Enery supplies industrial customers with around-the-clock green energy and is among the leading providers of corporate green PPAs in the region.
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