We will build massive energy storage facilities (160 MWh) in Poland!

June 26, 2026Paulina Czarnecka
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The Intersolar Europe trade show brought groundbreaking developments for our company and the Polish renewable energy sector. We are proud to announce the signing of a letter of intent under which we have assumed the role of General Contractor for a substantial portfolio of large-scale energy storage facilities with a total capacity of over 160 MWh.

This year’s edition of the Intersolar Europe trade show proved to be exceptionally fruitful for us—it was there that key business discussions were translated into concrete actions. The signed letter of intent concerns the implementation of one of the largest and most ambitious projects in the field of energy storage (BESS) in Poland.

As EPC Solar (Rex-Bud Group), we will serve as the General Contractor for an impressive portfolio of projects with the following total specifications:

  • 67 MW of total capacity

  • 🔋 160.4 MWh total capacity

  • 📍 17 locations throughout the country

This is a strategic investment whose fundamental goal is to provide tangible support for Poland’s energy transition and to significantly increase the flexibility and stability of the national power system.

Comprehensive EPC Project Execution

Our scope of responsibility includes the full, multi-stage implementation of projects on a “turnkey” (EPC) basis. The EPC Solar team will be responsible for:

  • Preparation of complete construction drawings,

  • All construction work and advanced electrical work,

  • Full integration of supporting infrastructure,

  • Coordination of the complex process of commissioning the facility and officially putting it into operation.

Collaboration with Technology Leaders

Such an advanced project requires synergy and the highest technological standards. We are carrying out this project in collaboration with renowned global partners specializing in BESS and energy management systems (EMS). Our technology partners are:

  • 🤝 Emaldo Power (BESS)

  • 🤝 ZOE Energy Storage (BESS Manufacturer)

  • 🤝 Advant (EMS)

The completion of such a large-scale portfolio confirms that we are a trusted partner capable of managing the most demanding projects in the modern power infrastructure sector.

We would like to sincerely thank all our Partners for the trust they have placed in us. We have a busy period of intensive engineering, operational, and implementation work ahead of us—we look forward to the next milestones of this project!

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