Grid access is becoming a critical data centre development risk

For years, the data centre development process focused heavily on location, planning permission, connectivity and construction capacity. Power was clearly important, but it was often treated as one workstream among many.

That is changing rapidly.

In Ireland, data centres grew from approximately 5% of national electricity demand in 2015 to 22% in 2024. Following several years of constrained new connections, a revised framework introduced in late 2025 and developed further during the first half of 2026 has created a new route for data centre projects seeking grid access.

However, access now comes with significant conditions. Under the new Irish framework, larger facilities may need sufficient dispatchable generation or storage to cover their full electricity requirement when necessary. This generation must also meet operational and market-participation requirements.

Britain is confronting a similar challenge. In July 2026, Ofgem proposed a refundable “data centre commitment fee” designed to remove speculative projects from the connection queue. Ofgem reported that 315 proposed data centres were seeking connections representing 73GW of demand, far more than Britain’s current peak electricity demand. Projects could also be required to meet firm development milestones or lose their connection position.

What this means for developers

Grid readiness is no longer a technical matter that can be resolved late in the design process. It is becoming a core commercial and investment consideration.

Before committing significant capital, developers increasingly need to understand:

• Whether the local network can accommodate the proposed load.

• What generation, storage or flexibility capabilities may be required.

• Whether connection assumptions align with the construction programme.

• How power-related obligations affect operating costs and project financing.

• Whether a project can meet regulatory milestones without creating unnecessary delay.

A site may have suitable land, planning potential and fibre connectivity, but that does not automatically make it deliverable.

The most successful projects will be those that bring energy strategy, grid engagement, planning, procurement and commercial modelling together from the beginning.

At ARCO Management & Consultants, we support organisations operating across the data centre ecosystem with project assessment, supplier engagement, operational planning and delivery strategy. Contact us to discuss how regulatory and infrastructure changes could affect your next project.