US Data Centre Giants Explore Small Modular Reactors for Power; UK Implications

11 August 2026 3 min readSource: datacenterdynamics.com
SMR firm Nuclea inks MoU with New Mining to evaluate deployment of SMRs at data centers across US - DCD

Executive summary

US SMR firm Nuclea Energy and Bitcoin miner New Mining Co. have signed a non-binding MoU to assess deploying SMRs to power data centres behind the meter. This initiative aims to provide stable, carbon-free power for energy-intensive digital infrastructure, with an initial focus on 30MWe and potential expansion to 100MWe.

Reporting based on datacenterdynamics.com

Why it matters

This development is significant for the UK as it showcases a potential model for powering the rapidly growing AI and data centre sector with low-carbon, on-site energy generation. While this specific agreement is US-based, the increasing energy demands of AI infrastructure globally highlight the need for similar innovative power solutions in the UK to manage grid constraints and achieve decarbonisation targets.

Sector impact

Analysis by AI Energy Intelligence UK

UK electricity demand

By exploring behind-the-meter generation, this project aims to reduce reliance on the main electricity grid for data centre operations. If successful, such SMR deployments could help decouple the significant power demands of data centres from broader grid capacity, potentially mitigating upward pressure on overall electricity demand.

UK energy security

Deploying SMRs directly at data centre sites could enhance energy security for these critical facilities by providing a dedicated, reliable, and potentially uninterrupted power source. This reduces vulnerability to grid fluctuations or outages, ensuring continuous operation for energy-intensive processes like cryptocurrency mining and, by extension, AI workloads.

Businesses

For businesses operating data centres, particularly those with high and consistent power needs like Bitcoin miners, on-site SMRs could offer competitive, stable, and carbon-free power. This could provide a significant operational advantage by stabilising energy costs and supporting corporate sustainability objectives.

Consumers
Not directly addressed by the source.

Key statistics

30MWe
Operational data centre load (initial evaluation)
100MWe
Modular expansion capacity (scalability phase)
3.5MW
Morphues microreactor power output
five-year
Morphues microreactor refueling cycle
65MW
New Mining's estimated capacity
2030
Nuclea Energy's target for first deployment

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

Quotations

"As our infrastructure continues to scale, exploring reliable, carbon-free, behind-the-meter power options is a natural next step for our operations. Bitcoin mining is an energy-intensive business, and access to stable, competitively priced power has always been central to how we compete."

Denis Slabakov, CEO, New Mining

"The phased approach outlined in this MoU reflects how we like to work: start with a clear-eyed technical assessment of an operator’s actual load profile, and let the data determine whether our technology is the right fit before either side commits to anything further. We look forward to working closely with the New Mining team throughout this evaluation."

Josef Freundorfer, CEO, Nuclea

Long-term implications

The evaluation of SMR deployment at data centres suggests a growing trend towards on-site, low-carbon power generation for digital infrastructure. Should this model prove viable and scalable in the US, it could inform future strategies for energy supply to data centres and AI facilities in the UK, influencing energy policy, grid planning, and investment into advanced nuclear technologies.

Small Modular Reactors (SMRs)MicroreactorsHigh-Assay Low-Enriched Uranium (HALEU) fuelDigital infrastructure

Frequently asked questions

What is the purpose of the MoU between Nuclea Energy and New Mining Co.?

The non-binding Memorandum of Understanding (MoU) is to evaluate the feasibility of deploying Nuclea's small modular reactor (SMR) technology to power New Mining's data centre operations behind the meter.

What type of reactor does Nuclea Energy offer?

Nuclea Energy's flagship product is its Morphues microreactor, a 3.5MW reactor designed to be housed in a modular container, powered by HALUE fuel, and with a five-year refueling cycle.

Why are data centres interested in SMRs?

Data centres, particularly energy-intensive operations like Bitcoin mining, seek reliable, carbon-free, behind-the-meter power options to ensure stable and competitively priced energy for their expanding infrastructure.

Original source

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

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Our reporting sits on top of the UK AI Energy Index — a sourced, dated record of AI and data-centre electricity demand, data-centre development and grid pressure.

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