The UK’s electricity supply margins look “tight but manageable” for the upcoming winter, according to system operator National Grid.

New Chief Executive Nick Pettigrew said he expected supply margins to be similar to the levels seen last winter.

National Grid’s role as system operator has come under closer scrutiny in recent years as it manages supply and demand as more power stations close.

His comments came as the FTSE100 company posted a 9% rise in full-year pre-tax profits to £3.1 billion.

2.4GW of balancing services

National Grid said: “In its role as System Operator (SO), the business balanced the network to maintain security of supply throughout the year.

“The business contracted additional balancing services of 2.4GW for the winter to be available to manage periods of peak demand.

“This included 133MW from demand-side response (DSR) arrangements, including businesses that signed up for reducing demand at peak periods if called on.”

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