Onde Wins PLN 110m Order for Poland BESS

• Onde won a PLN 110m contract for a major Poland battery energy storage system, powering 500,000+ homes for 24 hours—grid-stabilising infrastructure delivery set for Dec 22, 2027.

Polish renewables contractor Onde has won a PLN 110 million (about $30 million/€26 million) contract to build one of the largest battery energy storage systems in Poland. The scope covers construction of a power substation, excluding transformer supply, plus associated technical infrastructure, with handover scheduled for December 22, 2027. The company did not disclose the investor’s name, the project’s capacity, or its location.

Onde said the Western European renewable developer behind the project will be able to use a full charge to power more than 500,000 households for 24 hours. The CEO, Paweł Przybylski, noted it is Onde’s second electricity-storage order signed in recent weeks, describing BESS as a key tool for stabilising the grid.

What will Onde’s PLN 110m battery storage project deliver for Poland’s grid stability?

• Rapid frequency support: the battery can inject or absorb power within seconds to help dampen frequency deviations caused by sudden changes in generation or demand.
  
• Grid balancing for variable renewables: it can smooth short-term fluctuations from wind and solar output, reducing the need for faster, often more expensive conventional generation.
  
• Peak shaving and load shifting: stored energy can be dispatched during high-demand periods, easing stress on transmission and distribution equipment and lowering reserve requirements.
  
• Backup capacity to maintain reliability: during outages or constrained grid conditions, the system can provide short-term firming to help keep local supply stable.
  
• Voltage and reactive power support (where enabled): with appropriate power electronics and grid interface settings, the battery can assist in maintaining voltage within required limits.
  
• Faster response than traditional plants: battery dispatch can be scheduled and deployed quickly, improving operational flexibility for system operators.
• Reduced ramping and less wear on thermal units: by absorbing excess generation and covering deficits, it can limit how much backup plants must ramp up and down.
• Improved forecasting and operational planning: a controllable resource lets operators manage intraday variability more predictably, especially as Poland’s renewable share grows.