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How does the grid get extra power?

When wind power drops suddenly, as it did today, the electricity system operator Neso can issue a 'margin notice'. This is a call for extra power from other sources, usually gas-fired power stations, which can be brought online quickly to meet demand. This ensures there's always enough electricity, even if the wind isn't blowing.

Stories that explain this

Britain's Grid Calls for Extra Power as Wind Drops to 1%

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