Warehouse projects: Temporary power rarely fails, confidence does

16th February 2026
Wernick Power Solutions warehousing campaign

Temporary power on warehouse projects rarely fails in the way most people expect. It’s not usually a sudden outage or a piece of equipment reaching its limits. More often, operations continue uninterrupted, but confidence begins to waver.


It usually starts quietly: a question at a commissioning meeting about how long the temporary arrangement is expected to remain in place, a follow-up about fuel usage or a request for reassurance that the system will cope once the next phase of automation comes online. None of these questions are unreasonable, but together, they signal a shift in how temporary power is being perceived.

In many cases, the equipment is performing broadly as expected. Power is there, systems are running, but what’s harder to answer are those day-to-day questions. How stable is performance as loads build? What will happen if grid dates move again? How easy is it to explain what the temporary system is doing, and why it’s still there?

This tends to happen as projects move out of construction and into commissioning and early operation. Temporary power that was brought in to bridge a gap is suddenly supporting live systems, increasing demand and activity that matters operationally. At that point, it stops being judged on whether power is available and starts being judged on whether people trust it to keep doing its job as conditions evolve.

In many cases, the equipment is performing broadly as expected. Power is there, systems are running, but what’s harder to answer are those day-to-day questions. How stable is performance as loads build? What will happen if grid dates move again? How easy is it to explain what the temporary system is doing, and why it’s still there?

That uncertainty matters now more than ever, because permanent power is taking longer to arrive. Across the UK, grid connection delays and phased capacity releases mean projects can be physically complete long before full power is available. As a result, temporary arrangements are increasingly expected to operate for longer periods and under greater scrutiny than they were ever intended to.

Wernick Power Solutions generator, EV charging and fuel tank

When temporary power remains in place longer than planned, confidence becomes the issue. Operational teams want reassurance they can rely on the system. Sustainability teams need clarity on fuel use and emissions. Project teams are trying to protect the project delivery programme at a point when tolerance for disruption is low. If those questions are hard to answer, confidence drops, even if nothing has technically gone wrong.

That’s why many temporary power challenges on warehouse projects aren’t really technical at their core. They’re about how arrangements are planned, how much change is anticipated and how well decisions made earlier stand up once sites go live. The difference between temporary power that settles into the background and temporary power that becomes a constant topic of discussion is often less about capacity, and more about confidence.

If this feels familiar, it’s explored in more detail in our latest report on how temporary power is experienced on warehouse projects once it becomes central to delivery. It brings together situations teams recognise in practice, and the considerations that tend to make arrangements easier to live with over time.

Wernick Power Solutions at Allendale Sewage Treatment Works
Wernick Power Solutions Bridging the warehouse power gap report