National Grid Invests £1.3bn in US AI Power Boom for Data Centres

24 July 2026 8 min readSource: ft.com
National Grid taps into US AI power boom

Executive summary

National Grid, a UK utility company, has invested $1.75bn (£1.3bn) in Joulent, a US energy developer focused on supplying power to data centres. This move gives National Grid exposure to the rapidly growing electricity demand from the AI sector in the US, particularly as power becomes a major challenge for AI adoption.

Reporting based on ft.com

Why it matters

This investment by a major UK utility into the US AI infrastructure market signals the global nature of AI-driven energy demand. While the investment is overseas, it underscores the significant electricity requirements of AI data centres and the challenges in securing grid connections, issues that are also relevant to the evolving energy landscape and AI development within the UK.

Sector impact

Analysis by AI Energy Intelligence UK

UK electricity demand

The article highlights that AI data centres are a 'major source of electricity demand growth' and that 'powering data centres has become more complex with the surge in AI computing'. These facilities house thousands of advanced chips, creating 'much larger swings in power consumption' compared to conventional cloud-computing facilities. This has led to demand for off-grid power, with wait times for gas generators extending to several years.

UK energy security

The article's focus on the US market does not directly address UK energy security. However, it indicates a strategic move by National Grid to diversify its US exposure and gain experience in rapidly growing energy sectors, which could indirectly inform future strategies for ensuring stable energy supply in the UK.

Businesses

National Grid's investment of $1.75bn in Joulent allows it to gain 'exposure to a major source of electricity demand growth that diversifies our regional US exposure'. This also involves providing 'experience and equipment for large-scale energy infrastructure and grid operations', complementing existing partnerships. This strategic move aims to address the challenge faced by developers in securing grid connections for data centres.

Consumers

The article does not directly discuss the impact on UK consumers from this specific investment. However, generally, ensuring sufficient and stable power for AI infrastructure can indirectly support technological advancements that may benefit consumers.

Key statistics

$1.75bn
Investment in Joulent
35 per cent
National Grid's equity stake in Joulent
2.67GW
Chevron project electricity target by 2028
£2.5bn
National Grid's operating profit from US businesses (fiscal year ending last March)
45 per cent
Percentage of National Grid's group operating profit from US businesses

Figures as reported by ft.com. See original source for context.

Quotations

"exposure to a major source of electricity demand growth that diversifies our regional US exposure"

Zoë Yujnovich

"closer co-ordination between energy and infrastructure"

Noelle Walsh

"provide access to critical long-lead equipment and supply chains"

Joulent

"pockets of availability"

Yujnovich

Long-term implications

This investment signals National Grid's long-term strategy to engage with the energy demands of advanced technology sectors, particularly AI. It suggests a future where energy utilities will increasingly need to adapt to and innovate for the fluctuating, high-demand profiles of AI data centres, potentially influencing how grid infrastructure and power generation are planned and developed in the coming years, both in the US and, by extension, the expertise gained could eventually be applied in the UK.

AI data centresGas turbinesRenewable generationBattery storageCloud computing

Frequently asked questions

What is National Grid's recent investment?

National Grid has invested $1.75bn to acquire a 35 per cent equity stake in Joulent, a US energy company focused on providing power to data centres.

Why is National Grid making this investment?

The investment gives National Grid exposure to the rapidly growing electricity demand from the AI sector, a 'major source of electricity demand growth'. It also diversifies National Grid's regional US exposure.

What challenges are AI data centres facing regarding power?

AI data centres require significant power, with their advanced chips creating large swings in power consumption. Developers are struggling to secure timely grid connections due to congested transmission networks and long permit processes, leading to high demand for off-grid power solutions and extended wait times for equipment like gas generators.

Original source

This story summarises reporting from ft.com. Read the original for full context.

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