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Poland’s grid system operator issues warning following RES oversupply

The Polish power system operator, Polskie Sieci Elektroenergetyczne (PSE) has recommended reducing the power generation from renewable energy sources (RES) due to an oversupply in the grid on Sunday (23 April).

The oversupply was caused by a high RES power generation coupled with low electricity demand, PSE said. As a result, PSE announced a threat to the security of electricity supply between 11-5 pm on Sunday to reduce the generation of RES connected to the medium voltage.

In order to balance the supply and demand for electricity, electricity production in power plants was lowered. Due to the scale of the oversupply, PSE also recommended reducing the generation of photovoltaic sources connected to the transmission grid, 110 kilovolts (kV) and medium voltage of around 2.2 gigawatts (GW). Cooperation between other operators helped to balance the system, under which an emergency export of energy to neighbouring systems of up to 1.7 GW was agreed, PSE said.

No disruptions in electricity supplies to customers were recorded, PSE added.

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