The move comes in the wake of a ruling by Europe's top court on Tuesday to this extent.

Total Opal capacity amounts to 40 million kWh/h.

The European Court of Justice overruled a previous European Union decision that allowed Opal to sell and ship more supply, after it was contested by Poland in a geopolitically sensitive and long-running case.

(Reporting by Vera Eckert, editing by Riham Alkousaa)