Battery storage called into action as UK suffers country-wide power cuts

When two large generators went down in the UK, the system operator called upon battery storage to balance the frequency of the grid.

Battery storage assets were called into action last week after the UK suffered country-wide power outages following a transmission system stress event. 

Last Friday evening (9 August 2019), two large generators were disconnected from the UK’s power system almost simultaneously, effectively taking 2GW worth of electricity generation within minutes of each other. 

That collapse in generation sent the country’s transmission grid frequency to dip to 48.9Hz, far outside the frequency required for it to safely operate.