SP Energy Networks has completed a £6.5 million refurbishment of its Cockenzie substation, upgrading the 1960s facility to modern standards and securing its role in Scotland's energy future.

The substation, originally constructed to support the former coal-fired Cockenzie Power Station, has been a key part of the transmission network for more than half a century. Over that time, it has helped manage the transition of the UK's energy system from coal to renewables.

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Following the major refurbishment, the site is now expected to continue operating for at least another 40 years, playing an essential role in the UK's electricity infrastructure as new offshore wind projects and renewable connections come online.

Located near the Firth of Forth, the original substation was designed to shield vital electrical infrastructure from the coastal environment. The refurbishment addressed environmental wear and tear by installing insulated steel cladding, replacing roof felting, upgrading perimeter lighting and improving drainage.

Inside, the control room, which had remained largely unchanged since the 1960s, was completely modernised to meet current operational standards and ensure reliable performance for decades to come.

SP Energy Networks said the investment not only protects the legacy of the site but also ensures it is ready to support the UK’s transition to an all-electric future.