SOLARsk has launched a new Battery Energy Storage System (BESS)

SOLARsk has implemented a new ambitious project — the “Gomer-Elios” energy storage system, which will enhance the stability and reliability of Ukraine’s energy system. The BESS operates in the auxiliary services and arbitrage market, contributing to the efficient use of electricity, network frequency regulation, and improving grid reliability amid military aggression and the failure of energy equipment.

Key characteristics of the system:

• Power: 1210 kW
  
• Capacity: 5038 kWh
  
• ESS type: Sungrow ST455kWh-110kW-4h (11 modules)
  

This project, located in the Kirovohrad region, was completed in 9 months and represents an important step in the development of energy storage infrastructure in Ukraine. The energy storage system operates independently, without an integrated solar power plant, which helps reduce losses and ensure uninterrupted power supply — especially crucial when working in the auxiliary services market. This implies close cooperation in the electricity market within balancing and aggregated groups.

One of the key criteria for the location of BESS is their installation at short distances from the connection points to the electrical grid and ensuring the power capacity that minimizes the length of transmission lines and reduces energy losses during power transmission. Another important aspect is the stability of communication and minimizing delays in transmitting and receiving commands, which is critical for energy systems, where any delay could result in failure to execute commands from NEK “Ukrenergo,” leading to significant economic losses and reduced grid reliability.

The BESS has passed certification and testing by NEK “Ukrenergo” and has been providing auxiliary services on the Ukrainian electricity market since February 1, 2026, helping to stabilize the country’s energy situation.

This project is a prime example of the successful implementation of innovative solutions in renewable energy, showcasing our expertise and ability to effectively introduce cutting-edge technologies to ensure a sustainable energy future for Ukraine.