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Home | Risk of “very high prices” this Winter, says National Grid ESO 

Posted 1 week ago | 2 minute read

Eirgrid warns of “challenging” winter

Risk of “very high prices” this Winter, says National Grid ESO 

The electricity system operator (ESO) has said it expects supply to be tight at times this winter, most likely in the first half of December.

In its Winter Outlook 2022-23: Early view report, published on 28 July, ESO said there could be “tight periods” in early December. It expects system margins to be broadly in line with recent winters with a de-rated margin of 4.0 GW, equivalent to 6.7%. Expected peak demand is forecast to be 59.5GW (including 1.2GW of operational reserve). The loss of load expectation (LOLE) of 0.1 hours is within the Reliability Standard of 3 hours LOLE.

The system margin calculation assumes that on the tightest days the price in Great Britain will be higher than in Europe causing interconnector flows in response to these market signals, which include scarcity prices. But ESO said it expects some tight periods that are most likely to occur in the first half of December and said it may need to use its operational tools, such as issuing electricity margin notices (EMNs), to manage these periods.

Capacity stack chart to illustrate margin vs peak demand

Chart, bar chart

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Source: National Grid ESO

The report also outlined the steps that have been taken to build resilience and mitigate the potential impact of shortfalls in Europe’s gas supply to electricity customers in Great Britain. These included deals made to delay coal plant closures, incentivise greater demand-side response, and optimise network outages.

The full Winter Outlook Report will be published in the Autumn.

Mark Davis, GridBeyond’s Managing Director UK and Ireland, said:

“Should we experience periods of supply tightness this winter, we would expect power prices to escalate. Businesses that are able to take part in National Grid schemes to reduce demand during peak events could reap the rewards. However, expectations of tight conditions and high prices will be of concern to businesses without interruptible or flexible load. One way businesses can sure up their resilience is through investment in on-site battery storage or generation assets.

“GridBeyond is already working with our clients to create opportunities from energy storage. Whether you already have storage on-site and are looking to optimise it further or are looking for a CapEx free battery for your site, GridBeyond can support your business this winter.”

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