SUNOTEC, the European leader in utility-scale solar and BESS solutions, has signed a cross-border agreement with Shell Energy Europe B.V (Shell), which marks a milestone in advancing innovative financial mechanisms for the development of battery energy storage systems in Central Eastern Europe.

The five-year agreement is linked to a 600+ megawatt-hour battery energy storage project owned by SUNOTEC, which is under development and expected to reach commercial operations date by Q2 2026. The agreement provides long-term price stability for the project, supporting its financial viability. For Shell, the deal helps to diversify its wider power portfolio in the region. The agreement was facilitated by Enery Portfolio Optimisation. 

This transaction is among the first of its kind in Central Eastern Europe and helps to establish battery project development in the region. It reflects both companies’ shared commitment to accelerating the energy transition through cooperation in technology, infrastructure and financial innovation.

Kaloyan Velichkov, Founder and CEO of SUNOTEC, added:
“Agreements like the one with Shell highlight SUNOTEC’s commitment to working with leading energy players who share our vision for a sustainable and forward-looking energy future. This pioneering agreement demonstrates the power of collaboration in advancing flexibility and renewable-energy driven independence. By uniting technical expertise with financial ingenuity, we are helping to build a more resilient and integrated energy system.”

The transaction demonstrates how cross-border cooperation and forward-looking financial mechanisms can enhance regional energy market integration and facilitate the deployment of large-scale renewable energy assets.

KeyFacts Energy Industry Directory: SUNOTEC