Written Question·Department for Energy Security and Net Zero·UIN 51586

National Grid: Power Failures

Tabled: 12 May 2025

Answered: 20 May 2025

Question

Martin Wrigley

To ask the Secretary of State for Energy Security and Net Zero, what (a) risk assessment and (b) contingency plan his Department has produced for the National Grid in the event of a national blackout, in the context of the situation in Spain and Portugal

Answer

Michael Shanks

Great Britain has a highly resilient energy system, and a total failure of power supplies is assessed in the National Risk Register as a high impact but low likelihood event. In its 75-year history, the National Electricity Transmission System has never e...

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