21st July 2026
Every day brings another announcement of a new AI data centre, a vast offshore wind farm, a solar installation or a proposal for a new nuclear power station. Governments proudly speak of energy security, net zero and making their countries global leaders in artificial intelligence.
Yet amid this unprecedented investment, one uncomfortable question is rarely asked.
Who is going to build the infrastructure that actually delivers all this electricity?
Power generation captures the headlines. The electricity grid does not.
Without high-voltage cables, substations, transformers, switchgear and thousands of miles of transmission and distribution networks, every new power station is little more than an isolated source of energy. Electricity only has value when it can reach homes, businesses, factories and the new generation of AI data centres.
The United States is already discovering this reality. Technology companies are investing billions in AI infrastructure, only to find that many locations simply cannot provide the electrical capacity required. In some cases, new facilities are being told they may have to wait years for a grid connection.
The problem isn't necessarily a shortage of electricity.
It's a shortage of the infrastructure needed to move it.
Britain faces many of the same challenges.
As offshore wind expands around our coastline, electric vehicles become more common and heating moves towards electricity through heat pumps, demand for a stronger and more flexible grid will continue to rise. Add the enormous energy requirements of AI data centres, and the pressure on the electricity network becomes even greater.
But there is another issue that deserves far more attention.
Do We Actually Build What We Need?
The United Kingdom still has world-class engineering companies and specialist manufacturers, but many of the critical components that underpin the electricity network are sourced from overseas.
High-voltage cables, large power transformers, switchgear and specialist electrical equipment increasingly come from complex international supply chains stretching across Europe and Asia.
Large transformers are a particular concern. These are not mass-produced items sitting in warehouses waiting to be shipped. Each unit is individually designed and manufactured for its intended location. As countries around the world modernise their electricity networks, demand has surged dramatically, extending delivery times from around a year to three years or more.
That creates an obvious vulnerability.
If every developed nation is expanding its electricity infrastructure at the same time, competition for manufacturing capacity becomes intense. Delays in obtaining a single transformer can postpone the commissioning of an entire substation or transmission project.
The same applies to high-voltage cables, specialist switchgear and the skilled workforce needed to install and commission them.
The Skills Challenge
Infrastructure is not built by machines alone.
Britain also needs power system engineers, cable jointers, substation technicians, commissioning specialists and protection engineers. Many experienced workers are approaching retirement while demand for their skills is increasing rapidly.
Training the next generation takes years, not months.
Without sustained investment in people, the equipment itself cannot be installed quickly enough.
A Strategic Industry
Perhaps it is time to view electricity infrastructure in the same way we view defence, aerospace or semiconductor manufacturing.
No government would announce an ambitious defence strategy without ensuring there were factories capable of building the equipment.
Yet that is, to some extent, what risks happening in energy policy.
We celebrate announcements of new generating capacity while paying far less attention to whether we possess the industrial capability to manufacture and install the equipment needed to connect it to the grid.
Energy security is about far more than producing electricity.
It is about ensuring that every link in the supply chain is resilient—from copper and aluminium to transformers, substations, cables, skilled engineers and the manufacturing capacity behind them.
Looking Beyond the Headlines
Artificial intelligence is often described as the new Industrial Revolution.
If that proves true, then the electricity grid will become one of the defining pieces of national infrastructure of the twenty-first century.
The race is not simply to generate more power.
It is to build the networks capable of transporting it reliably, efficiently and securely.
That means investing not only in wind farms, solar arrays and nuclear stations, but also in the less glamorous infrastructure that makes the whole system work.
The irony is striking.
We are building some of the world's most advanced artificial intelligence systems, yet they all depend upon technologies that have existed for over a century: cables, transformers, substations and engineers.
Ignore those, and all the new generating capacity in the world will never reach the people and businesses that need it.
Perhaps the real question governments should be asking is not "How do we generate more electricity?"
It is "Do we still have the capability to deliver it?"