A price for holding power? Ofgem consults on a Data Centre Grid Commitment Fee of up to £712,500 per MW
Power has become the critical constraint for many data centre developments. Against a backdrop of increased public scrutiny, growing AI demand, increasing pressure on the electricity network and a crowded connections queue, Ofgem has launched a consultation on proposals designed to deter speculative projects and prioritise those that are genuinely capable of being delivered.
The headline proposal is a new Data Centre Commitment Fee, which could require developers of larger schemes to provide financial security of between £237,500 and £712,500 per MW of requested capacity to retain their position in the grid connections queue.
For a sector where access to power is often one of the most valuable project assets, the consultation could have significant implications for how schemes are structured, funded and brought forward.
Why is Ofgem proposing this?
Between November 2024 and June 2025, contracted demand in the electricity connections queue increased from 41GW to 125GW. Ofgem estimates that around 73GW of this relates to data centre projects. To put that into context, peak electricity demand across Great Britain in 2025 was around 45GW.
Ofgem’s concern is that the current system makes it relatively inexpensive to secure and retain a queue position. As a result, speculative or non-viable projects may be taking up valuable network capacity, distorting network planning and delaying projects that are genuinely capable of connecting.
The consultation forms part of the wider Curate, Plan and Connect programme being developed by Ofgem, NESO and Government to improve the operation of the demand connections system.
What is the proposed Data Centre Commitment Fee?
Ofgem is proposing that certain data centre projects should provide financial security linked to the capacity they are seeking to connect.
The proposed fee is between 2.5% and 7.5% of average data centre capital expenditure, which Ofgem estimates equates to approximately £237,500 to £712,500 per MW of requested capacity. Ofgem’s calculation is based on estimated average capital expenditure of £9.5 million per MW.
Importantly, this is not proposed as a simple upfront charge.
Instead, developers would be required to secure 100% of the potential fee from the point at which a Gate 2 connection offer is accepted through to energisation. The security would be returned if the project progresses as planned and reaches energisation. However, the fee could become payable if the project terminates, reduces its contracted capacity or otherwise fails to comply with the applicable requirements.
The proposed structure is intended to ensure that developers holding scarce grid capacity have a credible route to delivery and a sufficient financial commitment to progress their projects.
What sort of sums are we talking about?
The potential financial exposure is significant.
Based on the consultation figures:
- A 50MW project could require financial security of between £11.875 million and £35.625 million.
- A 100MW project could require financial security of between £23.75 million and £71.25 million.
- A 250MW project could require financial security of between £59.375 million and £178.125 million.
These are illustrative calculations based on Ofgem’s proposed range rather than confirmed charges, but they demonstrate the scale of the financial commitment that developers may be expected to make to retain their position in the grid connections queue.
Which projects would be affected?
The consultation proposes that the commitment fee should apply to data centre projects with a capacity of 40MW or more that:
- connect directly to the transmission system; or
- connect to the distribution network and are subject to a Transmission Entry Assessment (essentially a process used where a project is connecting to the distribution network but is large enough to have an impact on the wider transmission system) or equivalent process.
The proposals are intended to apply to both existing and future projects, although Ofgem is consulting on exemptions and transitional arrangements. These include an exemption for projects due to energise within a period of six months of the fee being introduced, together with grace periods for certain existing connection agreements and offers.
The proposed 40MW threshold and the level of the fee remain open for consultation. They should not be treated as settled policy.
More than just a fee
The consultation is not solely about financial commitments.
Alongside the commitment fee, Ofgem is proposing new data centre queue management milestones aimed at ensuring projects are making genuine progress towards delivery.
Developers may be required to demonstrate matters such as:
- a credible compute customer or end user;
- procurement of long-lead electrical equipment;
- financial capability; and
- technical readiness.
Separate pathways are proposed for self-operated facilities and projects intended for lease or sale, reflecting the different ways in which data centres are developed and brought to market. Projects that fail to meet the requirements could lose their queue position.
What does this mean for developers?
The consultation reflects a broader shift in the market.
Historically, obtaining a grid position was often viewed as a key milestone in making a project viable. Going forward, developers may need to demonstrate much more than site control and planning potential. Power strategy, funding arrangements, procurement planning and end-user demand could increasingly come under scrutiny before a project is permitted to retain valuable grid capacity.
For developers, funders and landowners involved in the data centre sector, the proposals are therefore about far more than connection mechanics. They raise fundamental questions about project deliverability, funding structures and the value of powered land.
At a time when AI Growth Zones, digital infrastructure and data sovereignty remain high on the Government’s agenda, access to power continues to be one of the defining issues for the UK data centre market.
The concept works, but does the proposed structure?
I have spoken to contacts across the data centre sector who broadly agree with Ofgem’s underlying objective.
There is a legitimate need to address speculative applications and ensure that grid capacity is reserved for projects with a genuine prospect of being delivered. In principle, a meaningful financial commitment could improve the health of the queue and help credible developments secure access to power more quickly.
The concern is that the proposed structure may not always distinguish between a speculative project and a feasible development that simply needs time to come together.
Data centre developments are complex. Land rights, planning, funding, customer demand, procurement and power arrangements do not necessarily fall into place at the same time. A project can be credible and commercially viable without having every element tied down when its connection offer is accepted.
Requiring a developer to lock up tens of millions of pounds from offer acceptance until energisation could therefore price out, or materially delay, projects that have a realistic route to delivery. It could also place particular pressure on developers bringing forward powered land before an operator, funder or end user has been secured.
Should the security be released in stages?
One possible answer would be to align the financial commitment more closely with the proposed queue management milestones.
If Ofgem is going to require developers to demonstrate that their projects have reached particular stages, there is a strong argument that a percentage of the original security should be released as those stages are achieved.
The precise triggers and release percentages would need careful consideration. The principle, however, is relatively straightforward. A developer that has provided clear evidence of continuing project maturity presents less of a speculative risk than it did at the point of offer acceptance.
A staged release would retain a meaningful financial incentive to progress the project, while reducing the burden of locking up potentially tens of millions of pounds throughout the entire connection period.
It may also create a better alignment between the two limbs of Ofgem’s proposal. If the milestones are intended to provide continuing evidence of deliverability, the level of security could reduce as that evidence becomes stronger.
This could strike a more proportionate balance between clearing speculative capacity from the queue and allowing credible developments the time and financial flexibility they need to reach energisation.
Ofgem will no doubt be concerned that any release mechanism could be open to manipulation and reduce the deterrent effect of the policy. There may be a middle ground, however, between releasing no security until energisation and returning all security only at the end of the project lifecycle.
Key dates
- 29 July 2026: Ofgem published the consultation.
- 16 September 2026: The consultation closes.
- Later in 2026: Ofgem intends to take decisions on the proposals after considering consultation responses. No fixed implementation date has been published.
What should developers be doing now?
Developers should use the consultation period to consider how the proposals would affect both individual schemes and their wider development pipelines.
In particular, they should consider:
- whether the proposed 40MW threshold is the right trigger for the commitment fee;
- whether the proposed £237,500 to £712,500 per MW range is proportionate;
- how the security requirement could affect funding, investment and land promotion structures;
- whether the proposed milestones reflect how data centre projects are brought forward in practice;
- whether a staged release of security would provide a fairer balance between deterrence and deliverability;
- whether the proposed exemptions and transitional arrangements adequately protect existing projects; and
- how the proposals could affect the value and marketability of powered land.
Developers should also model the potential exposure across their existing pipelines. A 100MW project could require security of between £23.75 million and £71.25 million, which may materially influence project economics, funding strategies and transaction structures.
That analysis should then inform the evidence submitted to Ofgem. Worked examples showing how the fee would affect viable schemes, funding costs and delivery timetables are likely to be more useful than a general objection to the principle of reform.
Those active in the sector should review the proposals carefully, stress-test the impact on their development pipelines and engage with Ofgem before the consultation closes on 16 September 2026. The concept may work, but the detail will determine whether the reforms remove speculative capacity without also shutting out feasible projects that need time to mature.
This is the industry’s opportunity to help shape a framework that removes speculative projects from the queue without discouraging the very developments the UK is seeking to attract.
Disclaimer
The proposals discussed in this article remain under consultation and may change before implementation. The potential impact will vary depending on the nature, scale and connection arrangements of each project. Specific legal, regulatory and commercial advice should be sought in relation to individual circumstances.
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