Testing fault at 100 MW battery disrupts Estonia-Finland power link

During testing at Estonia's 100 MW Kiisa battery park, both EstLink 1 and EstLink 2 tripped, triggering the most severe disturbance to the regional power grid since desynchronization from the Russian electricity system. As a result, nearly 1 GW of capacity was lost within seconds. The park's owner has since publicly pointed to the battery manufacturer.From ESS News A disturbance in Estonia's power system on Jan. 20 forced both EstLink interconnections between Estonia and Finland offline, cutting roughly 1,000 MW of capacity, equivalent to about 20% of the Baltic region's winter electricity ...

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