The Financial Times recently highlighted one of the defining infrastructure challenges of the AI era: a growing shortage of transformers and grid equipment that is slowing the delivery of new data centres. It’s an important story because access to power has become one of the biggest constraints on digital infrastructure.
But for the engineers responsible for delivering these facilities, securing a grid connection is only the first milestone.
The real work starts after the power has been secured, because every megawatt must be transformed into a resilient, reliable electrical infrastructure that can support continuous operation from the moment a facility is energised. That process involves thousands of engineering decisions, months of manufacturing, rigorous testing and careful project execution long before the first server is installed.
The next bottleneck isn’t the grid
The conversation around AI infrastructure understandably focuses on power availability. Without access to electricity, nothing else matters.
However, once power has been allocated, developers face a different challenge: delivering the electrical infrastructure required to distribute that power safely, efficiently and reliably throughout the facility.
Which is where programme timelines can quickly come under pressure.
Switchgear, modular electrical rooms, protection systems, busbar connections, cable management, commissioning programmes and logistics all have to align with demanding construction schedules. Delays in any one of these areas can impact the overall delivery programme.
As AI facilities continue to increase in scale, electrical infrastructure has become a critical path activity rather than a supporting discipline.
Manufacturing has become a competitive advantage
The industry often discusses shortages of transformers, but much less attention is given to how electrical infrastructure is manufactured.
Increasingly, leading data centre projects are moving significant portions of electrical construction away from site and into controlled factory environments.
Factory-built modular electrical rooms allow equipment to be assembled, integrated and tested before arriving on site. Manufacturing can progress in parallel with civil works, reducing on-site installation time while improving consistency and quality.
This approach is becoming increasingly valuable as projects become larger, schedules become tighter and skilled labour remains in short supply across Europe.
Testing before the pressure is on
Perhaps the least visible stage of any project is also one of the most important.
Factory Acceptance Testing (FAT) allows complete electrical systems to be verified before they leave the manufacturing facility. Protection schemes, communications, controls and operational performance can all be tested under controlled conditions.
Finding and resolving issues during factory testing is significantly less disruptive than discovering them during commissioning on a live construction programme.
For hyperscale projects where every week carries significant commercial implications, reducing commissioning risk has become just as important as reducing manufacturing lead times.
Logistics is now an engineering discipline
Delivering fully assembled electrical infrastructure is not simply a transport exercise – large modular electrical rooms require detailed planning around lifting strategies, transport routes, crane operations and site sequencing. Dimensions, weight restrictions and installation tolerances all have to be considered well before equipment leaves the factory.
Successful projects increasingly depend on manufacturers working closely with contractors, logistics specialists and client teams to ensure equipment arrives exactly when it is needed and can be installed with minimal disruption.
Commissioning starts long before energisation
There is often a misconception that commissioning begins when equipment arrives on site. In reality, successful commissioning is built into the project from the earliest design stages.
Engineering teams develop protection philosophies, integration strategies, testing procedures and documentation throughout the design and manufacturing process. By the time equipment reaches site, much of the work required for successful energisation has already been completed. This level of preparation reduces uncertainty during one of the most critical phases of any data centre project.
Engineering certainty in an era of unprecedented demand
The FT was right to highlight that access to power is becoming one of the defining challenges of the AI economy. But securing a connection is only the beginning.
As data centres continue to grow in scale and complexity, the ability to manufacture, test, transport and commission sophisticated electrical infrastructure efficiently will increasingly determine which projects are delivered on time.
In a market defined by unprecedented demand, engineering certainty is becoming just as valuable as access to power itself.
For the organisations building the next generation of AI infrastructure, success will depend not only on finding the megawatts, but on turning those megawatts into operational capacity quickly, safely and reliably.
