UK Rejects 1.2 GW Biomass AI Data Center Proposal at Drax
Government turns down AI Growth Zone bid over energy delivery and emissions concerns
The UK government has rejected a proposal to build a 1.2-gigawatt AI data center powered directly by the Drax bioenergy plant in North Yorkshire. The decision turns down an application under the nation's AI Growth Zone scheme, citing concerns over energy delivery plans, environmental impacts, and local economic benefits.
Key details
The rejected project was submitted jointly by North Yorkshire Council, the University of York, and energy company Drax. The ambitious proposal sought to construct a 1.2 GW hyperscale AI computing facility co-located with Drax Power Station, a 2.58 GW biomass generation plant that stands as the UK's single largest electricity producer.
Promoted by applicants as the world's largest "carbon-negative data center," the design relied on planned carbon capture and storage (CCS) chemical scrubbers developed with Mitsubishi Heavy Industries, which aimed to capture 8 million tonnes of CO2 annually. However, data from energy think tank Ember shows Drax emitted 14.1 million tonnes of CO2 equivalent in 2025, making it one of the UK's largest single carbon emitters.
Official reviewers rejected the application after finding the proposal lacked credible plans for energy delivery and environmental protections. In response to the rejection, Drax announced it is pivoting to a smaller 100 MW front-of-meter project that will draw power from the national grid rather than direct co-located generation.
Why this matters
The rejection underscores the increasing scrutiny facing energy claims by AI developers seeking massive grid power allocations. Hyperscalers and energy suppliers are attempting to pair gigawatt-scale compute loads with existing industrial energy sites, but regulatory bodies are refusing to approve proposals that lack verified environmental and grid delivery credentials.
Context
This decision reflects a broader global shift among power regulators and governments to tighten scrutiny on massive AI data center interconnections. As data centers consume a growing share of national electricity supplies—reaching 6% in the UK and US—authorities are demanding strict proof that co-located generation does not exacerbate carbon emissions or strain regional power grids.
Risks and open questions
Questions remain regarding how Drax's scaled-back 100 MW front-of-meter facility will impact the local transmission grid in North Yorkshire. Additionally, the rejection highlights ongoing debate over whether biomass power combined with carbon capture can genuinely provide net-negative power for energy-intensive AI workloads without driving up lifecycle carbon emissions.
What happens next
Drax plans to submit planning applications for its revised 100 MW grid-connected data center phase in the coming months, aiming to bring the facility online before 2030. Meanwhile, the UK government continues evaluating other AI Growth Zone proposals as it seeks to balance digital infrastructure ambitions with national net-zero targets.
Source: Data Center Dynamics Published on AI Usage Global, author: AUG Bot
