Nuclear Workforce Planning in 2026

BLOGBy Rullion on 04 February 2026

The UK’s nuclear sector is moving into 2026 with clear momentum.

By September 2025, UK civil nuclear employment had reached just under 100,000 roles, a record high. Growth is being driven by a wider mix of programmes than many people assume. It’s not only large-scale nuclear new build; it’s also fleet operations, defuelling, decommissioning, supply chain activity, and emerging delivery models like Small Modular Reactors (SMRs) beginning to shape future nuclear workforce planning.

At the same time, government direction is becoming clearer. The UK’s long-term nuclear sector plan is increasingly defined through national roadmapping and policy signalling with an emphasis on sustained nuclear capability through to 2050. And that has implications for how workforce strategy is shaped in 2026.

Delve into (and jump to):

Why 2026 is a turning point for workforce planning in the nuclear sector
One sector, very different workforce needs
The skills shaping nuclear hiring in 2026
Where nuclear workforce planning breaks down
What better nuclear workforce planning looks like in practice
What major programmes are signalling in 2026

Why 2026 is a turning point for workforce planning in the nuclear sector

The nuclear workforce challenge is often described as a shortage issue. In reality, the pressure points in 2026 are more specific and more operational.

This year sits at the intersection of several competing demands:

Major nuclear new build delivery continuing at scale (including Hinkley Point C and Sizewell C)
Sustained demand across the existing nuclear fleet, including operations and nuclear life extension planning
Long-term decommissioning and waste management programmes continuing nationally
Rising expectations around safety, quality, assurance, and regulatory compliance
Growing demand for digitally enabled engineering and delivery capability
Increased attention on the workforce implications of SMRs, including the shift toward repeatability and standardised delivery models

In 2026, the same skill sets are being pulled in multiple directions at once: across different sites, delivery stages, and risk environments. The result is a more competitive hiring landscape, leading to longer lead times for scarce capability and higher consequences when workforce planning is reactive.

One sector, very different workforce needs

“Nuclear recruitment” is often treated as one market. Where in actuality, it’s several markets layered together, and the differences matter.

Workforce requirements shift dramatically depending on where a programme sits in the lifecycle:

New build delivery
Ongoing operations
Life extension activity
Defueling and decommissioning
Emerging delivery models like SMRs

Each stage behaves differently in terms of supply, scarcity, onboarding time, and compliance requirements.

Design & Engineering

Design and early engineering work tend to rely heavily on:

Systems and discipline engineering (mechanical, electrical, C&I)
Safety case and assurance capability
Governance, documentation, and regulatory awareness

This is also where “transferable skills” can genuinely work. But only when expectations are set properly. Nuclear environments reward structured thinking, documentation quality, and delivery discipline as much as technical capability.

This is increasingly relevant as SMR conversations mature. While the delivery model differs from large-scale builds, the fundamentals remain consistent: nuclear-grade quality mixed with engineering rigour and configuration control.

Construction & Commissioning

Nuclear workforce growth becomes most visible and most pressured here. In 2026, what becomes most challenging has more to do with readiness than availability. Projects don’t simply need people who can do the work. They need people who can deliver at pace to nuclear standards, within nuclear governance. Early workforce planning here is what can prevent project bottlenecks later.

Construction and commissioning typically demand:

High-volume site delivery capability
Strong quality culture (inspection, welding, fabrication, assurance)
Commissioning expertise aligned to safety and compliance expectations
Logistics, HSE leadership, and interface management

Operations & Maintenance (O&M)

Operations is where nuclear becomes long-term. This is also where nuclear life extension activity becomes a real workforce driver in its own right. Extending the operating life of existing stations relies on retained knowledge and stable capability, and not just recruitment volume.

These roles depend on:

Reliability and asset performance expertise
Maintenance planning and outage delivery
Compliance, governance, and leadership maturity
Deep site knowledge and consistency

Decommissioning & Waste Management

Decommissioning is sometimes underweighted in workforce conversations, despite being one of the most sustained drivers of UK nuclear employment.

The Nuclear Decommissioning Authority’s (NDA) Draft Business Plan 2026–29 (published December 2025) reinforces decommissioning as a long-duration national programme, with ongoing workforce requirements across dismantling, waste handling, remediation, and programme leadership.

This work is often less visible than new builds, but it remains essential to the credibility and delivery of the UK’s wider nuclear programme.

Check out our interview with Deep Fission’s CEO, Liz Muller, on rethinking nuclear waste management.

The skills shaping nuclear hiring in 2026

Demand in nuclear workforce planning isn’t only about headcount. It’s about the right capability, in the right place, at the right time, delivered to the right nuclear standards.

As we move through 2026, pressure remains high in areas such as:

Electrical engineering and C&I
Systems integration and commissioning
Quality, inspection, and assurance
Safety case and regulatory-aligned delivery roles
Project controls (planning, cost engineering, scheduling)
Construction management and interface coordination
Digital capability (safety, configuration control, performance)

What’s notable in 2026 is that these skills are needed across multiple programme types at once. Across the lifecycle, one theme remains consistent: technical skill matters, but so does the ability to operate inside nuclear governance, with process discipline, documentation quality, and assurance expectations playing a key part of the job.

Where nuclear workforce planning breaks down

Even with all this nuclear sector growth, one of the biggest friction points is the gap between nuclear talent having the right technical background and being fully ready for nuclear delivery environments.

That “missing middle” tends to show up in areas like:

Project-readiness and site-readiness
Compliance and assurance expectations
Safety culture alignment
Documentation standards and quality processes

Geography adds another layer. Large programmes require both regional workforce development and national mobilisation. Without both, pressure builds quickly in local markets. This is why early workforce activity matters. Early shaping of pipelines leads to early team stabilisation and less reactive delivery, especially when multiple programmes are driving demand simultaneously.

This is where an abundance mindset matters most. The constraint isn’t that talent doesn’t exist. It’s that readiness is uneven and pathways into nuclear delivery remain too narrow. When organisations invest early in conversion, onboarding and nuclear-grade standards, capacity expands quickly. When they don’t, scarcity feels permanent.

“The challenge in nuclear isn’t a lack of people. It’s that capability is arriving at different levels of readiness, at different times, across different programmes. Workforce planning is about aligning that, not just filling roles.”
— James Chamberlain, Nuclear, Sector Director, Rullion

What better nuclear workforce planning looks like

The most effective workforce strategies in 2026 share a few key traits:

Plan by lifecycle phase, not just job titles

Nuclear delivery depends on sequencing. Workforce planning needs to follow the demand curve across the lifecycle and not just the current open vacancy list.

This forward planning can noticeably start to reduce risk:

Clearer lead times
Better mobilisation
Fewer last-minute compromises on quality or readiness

Build structured routes for scarce and transferable capability

The sector can’t rely only on nuclear-experienced talent. But “transferable” doesn’t mean instant. Transitions work best when there is clear structure around:

Expectations and standards
Onboarding and compliance readiness
Progression pathways once inside the sector

Where skills are transferable but nuclear readiness takes time, Train to Deploy helps build job-ready nuclear talent by combining targeted training with your delivery standards, so people arrive ready to contribute from day one.

Invest in early careers with conversion in mind

The National Nuclear Strategic Plan for Skills includes commitments to scale early career routes, including the ambition to double apprentices entering the nuclear workforce by academic year 2025/26, with 2,500+ apprentices joining the nuclear workforce in 2024/25.

The differentiator is what happens after entry: development pathways, retention, and long-term capability building.

Treat workforce as delivery risk management

In critical infrastructure, workforce constraints don’t only slow hiring. They affect commissioning timelines, quality performance, and programme confidence.

This becomes even more important when the sector is balancing large-scale builds, fleet operations, life extensions, decommissioning delivery, and next-generation programme development such as SMRs.

“You can’t separate workforce planning from mobilisation. If screening, onboarding, and readiness aren’t designed for scale, the workforce exists on paper but not on site.” — Jayne Lee, Head of Candidate Services, Rullion

What major programmes are signalling in 2026

Sizewell C is a strong example of early workforce momentum, and it sits within a wider landscape that includes major delivery demand at Hinkley Point C and sustained activity across operational and decommissioning sites.

In the last month, Sizewell C has reported:

Around 2,000 workers onsite
More than 100 apprentices appointed
Around £3bn in contracts awarded to 400+ UK suppliers
Continued regional supply chain mobilisation

Early pipeline activity is already shaping workforce readiness, long before peak construction demand. This is the direction the wider market is moving in: earlier engagement, clearer forecasting, and more structured talent strategies across delivery phases.

The nuclear hiring landscape in 2026

2026 will continue to be a strong year for the UK nuclear sector, but it will also be a demanding one.

The organisations that deliver best will be those that approach nuclear workforce planning as a core part of programme execution:

Anticipating scarcity early
Building structured pipelines
Protecting delivery confidence through quality and readiness
Creating workforce models that can scale across multiple sites and phases

Get ahead of nuclear hiring pressures in 2026

Nuclear workforce specialist support is available to secure scarce skills, strengthen mobilisation, and build site-ready pipelines without compromising quality or compliance.

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How is MHHS impacting the energy workforce?

For several years, industry planning has included the Market-wide Half-Hourly Settlement (MHHS) as part of the larger UK energy market reform. The deadline for May 2027 remains in place, and with central systems achieving readiness in 2025, meters are now being integrated into the new settlement model. To continue operating under the current settlement arrangements, organisations are currently figuring out how to integrate their current platforms into the MHHS infrastructure. Jump to: MHHS reaches far beyond settlement Where programmes are feeling the strain How hiring conversations are evolving Broadening where capability comes from Preparing for MHHS workforce demand MHHS reaches far beyond settlement The majority of the definitions surrounding MHHS emphasise the transition from estimated usage to precise, half-hourly readings. That description merely reflects the result. The underlying shift is how this change in settlement is supported. Electricity consumption is measured every 30 minutes based on actual data, not on profiles or estimates. Systems designed for periodic updates now need to handle continuous streams of information, with far less tolerance for delay or discrepancies. Data flows between organisations and needs to stay consistent at every stage to prevent errors in settlement. This is where energy system integration becomes essential. As information no longer sits within a single platform or team, effective coordination is required across independently managed systems, each presenting unique constraints around data formats, settlement timings, and the validation processes prior to submission. The act of consumption itself evolves into a more dynamic experience. Metrics like average household electricity consumption or average UK home electricity consumption are no longer fixed reference points. Data collected every half hour reveals how usage varies throughout the day, directly influencing forecasting models and operative decisions. Where programmes are feeling the strain MHHS programme teams are scaling while still working through the intricacies that only emerge as systems begin interacting. Dependencies between internal platforms and central MHHS infrastructure are becoming clearer during testing, where data needs to be exchanged, validated, and accepted within defined time windows. Data handling stands out as a significant pressure point. Half-hourly settlement depends on precise, high-frequency data streams, which existing systems are not always designed to support. In many cases, such pressure leads to projects for reworking parts of the architecture instead of simply building upon existing infrastructure. Especially relevant where data infrastructure and quality have been identified as potential risks within the transition to MHHS. The settlement and billing processes still need to function smoothly, even as new strategics are introduced and tested alongside them. This means operational teams are working within both models at once, adding to the existing workload for processes that already depend on a small pool of specialists. How hiring conversations are evolving With the rise in delivery activity, demand for specific skillsets is becoming easier to pinpoint. There has been a noticeable uptick in hiring for programme leadership, data engineering, and settlement expertise. Roles focused on data governance and system integrations are also gaining traction as organisations move further into managing migrations and various phases. How those roles are defined is starting to influence how quickly they can be filled. Some roles heavily rely on hiring criteria based on prior experience in the energy market, which can unexpectedly limit the candidate pool. As a result, roles frequently stay open for extended periods or fill at a slower pace than programme timelines permit. This places additional pressure on existing teams and slows progress in areas where specialist expertise is already stretched Many of the required capabilities are not exclusive to the energy sector, although they are frequently presented that way during hiring processes. Some organisations are already adjusting how they approach these challenges. Rather than focusing only on direct sector experience, they are bringing in people who have delivered comparable programmes in other environments. Broadening where expertise comes from Financial services platforms handle high volumes of transactional data, making accuracy, reconciliation, and auditability essential. Telecoms programmes oversee infrastructure transformation throughout distributed networks, often coordinating system upgrades while minimising interruptions to live services. In large technology environments, integration teams routinely connect platforms with different data structures, handling mismatches in format, latency and validation rules. These examples align closely to the types of challenges encountered in MHHS delivery: Data engineers who have honed their skills with high-volume transactional systems can apply that expertise to half-hourly data flows. Data governance specialists bring experience in managing data quality and resolving validation exceptions where information does not meet required standards. Programme managers who are used to coordinating complex infrastructure or digital programmes are well-versed in managing dependencies across multiple teams and timelines. Integration specialists often move between sectors, applying their expertise to connect systems that were not originally intended to work together. Transitioning into the energy sector still requires onboarding and familiarity with the operating environment. However, they allow organisations to access capabilities that would otherwise fall outside conventional hiring standards without causing additional delivery delays. There is also increasing interest in structured development routes. Training programmes are being used to build skills in areas experiencing increased demand during phases like testing and migration and the transition into live systems. Preparing for MHHS workforce demand Workforce planning needs to adapt and evolve with the MHHS programme rather than sit alongside it. Each phase presents its own unique set of requirements. Mapping these changes in advance helps reduce reliance on reactive hiring, especially in areas where onboarding takes time. This also allows for different ways of structuring delivery. Some roles are better suited to permanent teams. Others can be delivered through specialist contractors or outcome-based models depending on the nature of the work. Align workforce planning to delivery phases MHHS delivery doesn’t place consistent pressure on the same roles throughout. Workforce demand shifts as programmes move forward, and planning needs to reflect that progression rather than treating hiring as a single, static requirement. In the early stages, work tends to centre around architecture and settlement design. Solution architects define how systems will connect and business analysts translate regulatory requirements into process and system changes. Settlement specialists are also closely involved here, reworking existing processes and identifying where adjustments are needed. As programmes move to system integration testing (SIT), demand shifts. The emphasis moves from design to validation, with data engineers and integration specialists becoming more central as data moves between systems and needs to hold up under settlement conditions. Bringing these systems together safely requires the expertise of both the test managers and environment leads to ensure seamless coordination. The later stages bring different pressures. The rise in migration activity drives a greater need for professionals skilled in data alignment and reconciliation to make sure records match across systems. Operational teams tasked with billing and settlement processes are gearing up to implement innovative strategies while maintaining existing processes. Some roles require continuity where knowledge of settlement processes needs to be retained. Others are more concentrated within specific phases. By structuring workforce delivery around these stages, organisations can bring in support where needed, without the need to expand teams across the entire programme. Delays tend to surface once systems interact at scale Successful integration hinges on coordination across teams working within defined settlement timelines. Delays in one area can quickly affect others. Migration then adds further pressure. Transferring meters and associated data into the new model demands both continuity and accuracy. When additional support is not in place early enough, existing teams absorb the extra workload, which can hinder progress and raise the chances of errors in settlement outputs. MHHS delivery depends on how teams are built MHHS sits within a wider energy market reform, with multiple organisations in the sector progressing through delivery at the same time and often drawing on the same types of experience. The overlap is already influencing the speed of team construction and the onset of progress slowdowns. Identifying these overlaps earlier allows organisations to bring in the right experience before timelines are affected. Once programs reach the integration or migration stages, there is less flexibility to resolve gaps without slowing delivery. This is why workforce delivery is starting to shift. Delivery is less about the technology itself and more about the teams having the right capacity and expertise in place to carry programmes through. Broadening the methods of talent assessment and exploring new avenues for sourcing talent, including bringing in transferable skills from adjacent sectors, can enhance MHHS delivery. The organisations that move with more certainty here tend to be the ones that have built teams to be able to handle the complexity and scale of the change required.

By Rullion on 15 April 2026

NEWS

Rullion joins Energy & Utility Skills to support workforce planning

The UK’s energy and utilities sectors are preparing for a level of infrastructure investment that will require more than 300,000 new workers over the next five years. That challenge is not just about attracting more people into the sector. It is also about how organisations understand the workforce they need, how they access it, and how workforce planning connects to delivery in practice. As investment accelerates, workforce pressure is building across multiple fronts at once. Skills shortages remain well documented, but the challenge extends beyond supply. It also includes visibility, coordination, and the ability to plan across increasingly complex delivery models. Across infrastructure programmes, delivery relies on a mix of permanent teams, contingent labour, specialist contractors, consultancies and supply chain partners, often operating across different stages of the same programme. Workforce planning needs to reflect that reality, rather than focusing solely on traditional headcount. Rullion has joined Energy & Utility Skills  as part of this wider industry focus, contributing a distinct perspective as the only workforce solutions provider in the membership, with insight into how workforce strategies can better reflect the realities of delivery. Why Rullion has joined Energy & Utility Skills Energy & Utility Skills plays a central role in supporting workforce development across the energy, water and waste sectors. Through industry collaboration, workforce research and skills strategy, it brings together employers, partners and policymakers to address long-term capability challenges across critical infrastructure. Rullion has joined as part of that wider effort, contributing practical insight from across the extended workforce. While much of the industry focus is on attracting new entrants and developing skills pipelines, a significant proportion of delivery continues to rely on contingent labour, specialist contractors and external delivery partners. Bringing greater visibility to that part of the workforce, and how it interacts with permanent teams, is an important part of building a more complete view of workforce capability. James Saoulli, CEO at Rullion shared: “We’re proud to join Energy & Utility Skills and to be part of a community focused on addressing one of the sector’s biggest challenges - building a skilled, resilient workforce for the future. As investment accelerates across the energy, water and waste sectors, we believe there is a real opportunity to take a more integrated approach to workforce planning, bringing together both permanent and extended workforce models. We look forward to working with Energy & Utility Skills and its members to support the delivery of the UK’s net zero ambitions.” Workforce planning needs a broader view Much of the workforce challenge sits in the gap between the workforce organisations plan for and the workforce they actually rely on to deliver projects. These programmes are delivered through a combination of permanent teams, contingent workers, specialist contractors and wider delivery partners. Not all of that workforce is equally visible in planning discussions, despite playing a critical role in delivery. This is already becoming more visible across the sector, as organisations respond to growing pressure around hiring, skills access and delivery timelines. While the industry has spent years focused on decarbonisation targets, energy security and affordability are now accelerating investment and infrastructure upgrades. We explored this further in our recent piece on UK utilities hiring challenges employers cannot ignore in 2026. A more complete view of workforce demand allows organisations to plan with greater accuracy, particularly where delivery models are layered, timelines are long, and competition for skills is increasing across the market. Bringing insight from delivery environments Rullion brings more than 45 years’ experience supporting organisations across energy and utilities, working alongside companies including EDF Energy, E.ON and Northumbrian Water. That perspective comes from the delivery environment itself. Across major infrastructure programmes, workforce challenges rarely sit neatly within one hiring channel. They tend to emerge across the interaction between permanent teams, contingent labour and external delivery partners. This is where greater workforce visibility becomes important. Understanding where capability sits, how it is being deployed, and how different workforce models support delivery gives organisations a stronger basis for workforce planning. It also helps widen the conversation around skills. Not just in terms of how many people are needed, but how workforce capability is built, accessed and coordinated over time. A more joined-up approach to workforce capability Energy & Utility Skills plays a central role in helping the sector respond to long-term skills and workforce pressures across energy, water and waste. This includes connecting skills strategy more closely to infrastructure delivery, labour market access and future resilience. Rullion’s contribution will focus on practical insight from delivery environments, particularly around the role of the extended workforce and how organisations can take a more integrated view of capability. As the sector works to meet investment, decarbonisation and resilience goals at the same time, collaboration across employers, partners and industry bodies will remain essential. The workforce challenge is already clear. The next step is building strategies that reflect how delivery happens in practice.

By Rullion on 08 April 2026