Elliott Meighan, energy solutions consultant, Equity Energies, explores the impact of the Ofgem connection fee on the construction industry and why it favours readiness over finance
Ofgem has announced it’s consulting on a “commitment fee” for data centres seeking a grid connection, as a means of reducing the number of projects that join the queue but end up being unready or unviable.
It’s not an insignificant amount: a refundable charge of between £237,500 and £712,500 per megawatt, which, on a 500MW development, means somewhere between £120m and £356m could be tied up before a single server is switched on. The obvious conclusion is that a fee of this scale could reward deep-pocketed hyperscalers while shutting out smaller and mid-tier operators that lack the funds.
I understand that suggestion. A fee-based gate-to-grid connection like this may present a barrier to developers who don’t have unlimited funds. But I also think the attention to the fee mechanism overshadows what Ofgem is proposing and avoids the more useful conversation the sector should be having. If your pipeline of work depends on data centre construction, this is important, because the scheme is designed to effectively clear the queue of those projects that won’t come to fruition.
These proposals remain subject to consultation; therefore, the final design and implementation may differ from the current draft.
Is the fee proposal a useful place to start?
It helps to be clear about the problem Ofgem is trying to solve. According to the regulator, the demand connection queue has gone from 41GW to 125GW in a matter of months, and data centres account for the bulk of that; somewhere in the region of 73GW of applications. To put that in perspective, Britain’s peak electricity demand sits at around 45GW, which means the queue for data centres alone is larger than everything the country draws during the busiest peak periods.
Ofgem believes some developers are lining up multiple sites and reserving capacity across all of them, without necessarily intending to build them, raising concerns that not all projects in the queue are sufficiently mature or likely to proceed.
Asking developers to put real money behind their applications appears to be a rational response; less about pricing any projects out, and more about identifying which are serious.
Why the fee is only part of the reform
The application fee isn’t the only mechanism on the table. Alongside it, Ofgem is proposing data centre-specific queue milestones, for which developers will have to continue to evidence financial capability, commercial maturity and procurement progress to hold their place.
This approach significantly changes the picture. A fee on its own could favour those developers with the biggest balance sheet. The consultation proposes that the fee would be refundable, tied to actually connecting a site to the grid, and would sit alongside the ongoing requirement to prove a project is real and viable. Therefore, a large construction company with appropriate funds but a flimsy project behind it shouldn’t sail through either.
Read that way, the reform could work in favour of smaller developers that have genuine projects, and the ongoing proof to back them up. And if the speculative applications are cleared out the connection queue would get shorter and new applications more honest. That means a well-prepared mid-tier operator with a real site, making real progress, supported by robust funding, stands to benefit from that clarity. A shorter, more honest queue would also give the construction pipeline something it currently lacks: a clearer view of which developments will genuinely proceed, and more accurate timing on when. For the contractors, engineers and suppliers planning around specific projects, that kind of forward visibility is vital.
Making readiness the core consideration for data centre projects
The significant shift here is in what the queue will reward: readiness. And readiness is something any developer can build regardless of their size.
It’s also worth being clear that readiness isn’t only about the energy strategy. A data centre is only deliverable if the whole project stands up, and that includes the mechanical detail like cooling, ventilation and water systems, which too often get treated as a later-stage concern. These are among the most space- and service-intensive elements of any build, and they must be coordinated with the structural and architectural design. Where that detail is resolved early, it reduces the risk of clashes, redesign and rework once construction is underway. For a reform that intends to reward deliverability, designing the mechanical and construction elements together from the outset is exactly the kind of discipline that shows a project is ready to be built.
What should the construction industry be doing now?
If readiness does become the differentiator, then the practical response is to build the evidence of it early. That means having the site feasibility work in place, a documented history of engagement with your Distribution Network Operator (DNO) and NESO, offtake commitments where available, and demonstrable procurement progress. This is essentially the paperwork for a serious developer and will reinforce the view that the project is viable.
Much of this will be construction-side work brought forward, including early design, site investigations and feasibility studies that are robust enough to survive regulatory scrutiny. This means involvement from project and engineering teams far earlier than the usual sequence would suggest.
Procurement progress is a good example of this. Some of the longest lead times on a data centre sit with mechanical plant: the chillers, cooling units and pumps that keep a site operable. Evidencing that this equipment is specified and moving would be part of proving a project is real. It’s relevant for the build programme as much as the queue, because a site can’t be commissioned or handed over if the plant that cools it’s on site and installed.
Secondly, developers need to carefully determine how much capacity they request. When it comes to grid connection, there’s a long-standing habit of over-reserving, almost as a ‘just in case’ consideration. Under the new proposals, that could be an expensive move, because you’ll be posting a fee against every megawatt while being required to provide evidence of your need for it. Right-sizing, or phasing capacity through a flexible connection agreement, is not only less expensive but easier to justify. Smaller, well-evidenced requests are simpler to defend than expansive ones, which again plays to the strengths of leaner operators over hyperscalers that may intend to reserve more than they need.
Lastly, it’s worth questioning whether all your capacity needs to come from the grid connection. I was at a session at Solar & Storage Live in London recently where the discussion turned to pairing a flexible connection agreement with on-site battery storage; securing a connection faster, albeit at a reduced level, and using storage to give the site the flexibility it needs. On-site or private-wire generation combined with storage won’t be the right solution for every development, but for some it could ease the pressure on the connection itself while also strengthening the readiness case. For construction and MEP teams, it also means designing generation and storage from the outset.
A better conclusion than winners and losers
It’s easy to read the “commitment fee” as the headline and assume that this favours the bigger players. I think the more accurate, and more practical, reading is that Ofgem is trying to sort the serious from the speculative. In the fee element, it may have chosen a blunt instrument to begin that process, but that could be sharpened significantly by a set of milestones that do the proper due diligence.
Treating readiness as something to build deliberately, early and in full is a discipline available to any operator, of any size, if they’re willing to do the work. That has the potential to be an encouraging, market-changing philosophy.
Plus, a development pipeline sorted by deliverability rather than speculation should, in time, be a healthier one for everyone who designs and builds it.
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