Why Tomorrow's Engineers Need Systems Thinking

The UK's engineering ambitions are increasingly dependent on how well different parts of its critical infrastructure work together. The challenge is becoming apparent across the energy sector, where investment in new generation must be matched by the electricity networks needed to carry it.

In September 2026, the National Audit Office (NAO) warned that delays to the UK's £70 billion programme for upgrading electricity transmission could leave new renewable generation waiting for network capacity. Electricity network constraints already cost consumers £1.9 billion in 2025–26, with the NAO warning that these costs could rise substantially without coordinated action.

The engineering expertise needed to expand the network exists across different organisations, but successful delivery depends on far more than the completion of individual projects.

How do we prepare the next generation of engineers to look beyond their immediate specialisms and understand the wider infrastructure systems their work will support?

The challenge of engineering across connected systems

In Rullion's Hot Off The Grid podcast, Abbie Badcock-Broe, former Head of Corporate UK and Decarbonisation Strategy at National Grid, discussed the importance of whole-systems thinking. Drawing on her experience in energy strategy and policy development, Abbie explained how breaking complicated problems into individual components can obscure the relationships between them.

"For a lot of the time with whole systems, it's not just about breaking it into very small bite-sized chunks, because then you actually lose what the relationships are between them."

The challenges surrounding electricity connections reform demonstrate how those relationships influence infrastructure delivery. Renewable energy developers need certainty about when their projects can connect to the grid, while network operators must plan infrastructure around expected generation and demand.

In its October 2026 update, the National Energy System Operator (NESO) acknowledged that issuing a connection offer is only one stage of bringing a project online. Planning consent and the completion of necessary network construction must align with the project's own readiness. Progress on an individual project can therefore depend on decisions and delivery milestones outside the immediate engineering team's control.

Abbie described how strategy development at National Grid brought together market analysts and teams from different business areas to assess future investment options. That collaborative approach reflects the difficulty of making decisions when responsibility is shared across organisations.

Engineering decisions don't end when construction is complete

The whole-systems challenge extends into rail programmes, where rolling stock must operate within the wider network's capabilities. Infrastructure delivery relies on specialist teams, yet the decisions made between them can determine whether the completed system performs as intended.

At Hitachi Rail, the business has expanded beyond rolling stock manufacturing into maintenance services and digital technologies. Speaking on Hot Off The Grid, Rachel Evans, HR Director, described the organisation's growing investment in analytics and diagnostic capabilities.

The rail industry involves considerably more than the trains themselves. The ability to monitor asset performance increasingly connects engineering teams responsible for physical equipment with specialists working in data and digital systems.

Network Rail's insight platform demonstrates how operational information can support different maintenance approaches. Using track inspection data and remote condition monitoring, the platform helps predict potential failures so that teams can intervene before disruption occurs.

Access to better operational information also has implications for future engineering decisions. Understanding how equipment performs throughout its service life can inform the development of replacement assets.

The relationship between specialist technologies and operational requirements is equally important in nuclear decommissioning. Phoebe Lynch, Head of Innovation at Nuclear Restoration Services, described how the UK's nuclear estate is exploring robotics and artificial intelligence. At Oldbury, an active demonstrator is investigating automated approaches to sorting and segregating nuclear waste.

Developing those capabilities involves working across established engineering disciplines and bringing new perspectives into a highly regulated environment.

Phoebe recalled an earlier project where a risk practitioner, without the same detailed technical knowledge as the engineering team, challenged established thinking by asking questions that others had overlooked. The experience reinforced the value of bringing different perspectives into engineering discussions, especially when established approaches might be limiting the solutions being considered.

"But it always felt like at the back end of those sessions, we suddenly had so many more ideas and solutions of ways of doing things.”… “Innovation culture is all about making sure everyone feels comfortable, empowered, in a psychologically safe environment and team, so they can put their ideas forward, and they're going to be listened to, heard and taken seriously."

Technical expertise remains essential to safe decommissioning, but the ability to draw on different perspectives can help teams recognise opportunities that established approaches may have missed.

Planning beyond the next five years

Critical infrastructure programmes often operate across planning horizons that bear little resemblance to the lifespans of the assets being developed.

Electricity networks are expected to accommodate changing energy requirements over several decades, despite investment being governed by shorter regulatory and financial planning periods. Engineering teams must make decisions using the information available today, while accounting for demand and technology that will continue to evolve.

Short-term funding pressures can make these decisions difficult. Delaying investment may reduce immediate expenditure, although the underlying infrastructure requirement can remain unresolved.

When asked what she would change about critical infrastructure during her Hot Off The Grid interview, Abbie returned to the problem of short-termism and the tendency to assess essential investment against immediate affordability pressures. Her concern is that delaying infrastructure programmes can create consequences that extend well beyond the current investment cycle, especially when the underlying need for new capacity remains.

"The unnecessary short-term noise of saying we can or we can't actually do these investments, as though the affordability topic of today prevents us from thinking about the long-term investment that's really important for our children and beyond."

Nuclear new build programmes show the magnitude of the timescales involved. The NAO's May 2026 assessment of Sizewell C describes a power station expected to generate electricity for at least 60 years, with construction and financing decisions that will affect consumers and taxpayers over an extended period.

The long-term implications also extend beyond electricity generation. Julia Pyke, who played a leading role in developing Sizewell C, discussed the relationship between major infrastructure programmes and the communities surrounding them.

Construction can place considerable pressure on local areas over many years. Julia argued that successful development should account for the opportunities these projects can create, rather than concentrating solely on mitigating the disruption they cause.

"I think we need to think harder about creating benefit and about some of these rural coastal communities where [...] jobs have been lost, whether in fishing or in fossil fuel industries or in manufacturing. And how are we going to replace them?"

A major energy development can create opportunities for people to build long-term careers, provided those benefits are considered early enough in the programme. Choices like this made during project development establish the conditions in which infrastructure will operate and determine some of the opportunities available to the people who inherit it.

Developing engineers for the whole programme

Technical expertise remains fundamental across critical infrastructure, but engineers also benefit from understanding how their work connects with other disciplines and stages of delivery.

Exposure to wider project planning and collaboration with operational teams can help engineers recognise dependencies beyond their immediate responsibilities. Structured early careers programmes can provide a starting point, while employers need to ensure those opportunities continue throughout people's careers.

The gap between engineering education and workplace readiness can be particularly challenging within nuclear. The same consideration applies to workforce planning across major infrastructure programmes, where early careers strategies must respond to changing requirements and the transfer of specialist knowledge should be anticipated well before individual work packages begin.

Preparing engineers to shape our future

The infrastructure that future generations will inherit is already being shaped by decisions made across organisations and engineering disciplines. The next generation will need both the technical confidence to solve difficult engineering problems and the judgement to understand how their solutions affect the wider programme.

Today's engineers are already making decisions that will define the infrastructure available decades from now. The opportunity is to prepare those who follow them to make those decisions with a fuller understanding of everything they affect.

Planning for the engineering challenges ahead?

Building the right engineering workforce requires an understanding of how programme requirements will change over time. Rullion helps critical infrastructure organisations plan for these demands and access the specialist talent needed throughout delivery through strategic workforce solutions.

Get in touch with our team to discuss your workforce requirements.