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<p>The Electricity System Operator (NGESO), has a legal obligation to have a capability
to restore the electricity system in the event of a total or partial failure.</p><p>
</p><p>In line with historic expectations, NGESO has sourced and procured capability
to achieve the restoration of 60% of national demand within 24 hours. This level of
demand equates to the level required to run a stable, interconnected Electricity Transmission
System, from which remaining demand can be restored.</p><p> </p><p>This approach requires
a certain number of self-starting generators to be available in each region and prioritises
the restoration of supplies to other generators to maintain a broadly consistent rate
of restoration across all GB regions.</p><p> </p><p>The restoration approach is reviewed
at least once every two years, to ensure that GB’s restoration capability keeps pace
with all relevant technologies and the changes to the electricity system.</p>
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