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SSE handed £9.8 million fine after rule breach at Loch Ness power station

The fine would have been more had the energy giants not settled the investigation early.

The SSE Power Station at Foyers on Loch Ness. Image: Sandy McCook/DC Thomson.
The SSE Power Station at Foyers on Loch Ness. Image: Sandy McCook/DC Thomson.

A rule breach at a power station near Inverness has seen energy giants SSE issued with a fine of nearly £10 million.

The firm, which has its headquarters in Perth, has been fined £9.8 million by industry regulator Ofgem after it was found to have breached its generation licence.

Ofgem said an investigation found the company’s generation arm overcharged the National Grid Electricity System Operator (NGESO) during a time of so-called transmission constraint.

Transmission constraints happen in situations such as when there is not enough electricity network capacity to transport power out of an area in which local generation outstrips demand.

The electricity system operator takes action to manage flows across the network to increase and decrease the amount of electricity produced by different generators.

But, given that it only has limited alternatives available to it in these situations, there are risks that generators can exploit their position by increasing prices to reduce output and Ofgem puts rules in place to prevent this.

‘Significantly more expensive’

Ofgem’s probe, which was launched in October 2021, found SSE made the bid prices it charged the electricity system operator to lower output from the Foyers pumped storage power station, “significantly more expensive”, including in periods of transmission constraint.

Ofgem said while there was no evidence to suggest the actions were deliberate, it found SSE breached the rules in place.

It warned the pricing actions would ultimately increase costs for consumers.

The SSE Power Station on Loch Ness
The SSE Power Station at Foyers on Loch Ness.

Cathryn Scott, director of enforcement and emerging issues at Ofgem, said: “Protecting consumers is a priority for Ofgem, and we will continue to monitor the wholesale energy markets in Great Britain and ensure their integrity on behalf of energy users.

“This enforcement action sends another strong signal to all generators that they must put in place controls to ensure that their bid prices are set in a way that ensures that they do not obtain excessive benefits during transmission constraint periods.

“If they fail to do so, they will face significant consequences.”

SSE has since pledged to put in place a new pricing system designed to properly reflect the costs and benefits of reducing its generation at Foyers.

Fine reduced from £11.5 million

Ofgem added that SSE’s fine was reduced from £11.58 million as the company settled the investigation early.

A spokesman for SSE said: “We aim to comply with regulations at all times and believed we were doing so in this case.

The welcome sign outside SSE headquarters in Perth
SSE headquarters in Perth. Image: Steve MacDougall/DC Thomson

“We co-operated fully with the investigation.

“Following the investigation, we are updating our relevant procedures accordingly.”

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