A former chemical plant in North Wales, UK, could be turned into a data center under plans put forward by AI infrastructure firm Carbon3.ai.

The data center would be built on the site of the former Octel factory at Amlwch Port, located on the island of Anglesey, North Wales.

Carbon3.ai has submitted a planning application to Anglesey County Council, requesting a change of use for the site to enable the data center to be built.

In its application, the company said it would adapt and “reuse existing buildings within the industrial complex, enabling the delivery of a modern, energy-efficient AI center that will provide secure, sustainable and high-capacity computing infrastructure in support of the UK’s digital and AI sectors.”

Target capacity and a proposed opening date for the facility are not included in the application, but the site plan appears to show a single data hall.

The application said the development would fit with the UK government’s designation of Wales as an AI Growth Zone. The Growth Zone initiative aims to identify areas where data center developments will be encouraged, through priority access to power and favourable business rates.

The Octel factory produced bromine using seawater, but closed in 2004 after operating for more than 50 years. Local media reported that it was sold to an unnamed buyer last year.

Carbon3.ai launched a UK-based sovereign AI platform in September 2025, claiming at the time that it would eventually comprise 100,000 GPUs, aiming to reach more than 30 locations. In December, it revealed it had signed a deal with Nvidia to deploy the GPU firm’s Blackwell Ultra AI infrastructure.

The company revealed plans for a modular AI data center in Derbyshire in November 2025.

On its website, the firm claims to have 50MW of available capacity, and a pipeline of 4.5GW. It appears to be planning four hyperscale data centers around the UK, as well as a network of 30 “rapid deployment sites.”

Little information about the company and how it is funded is available, though it appears to be a subsidiary of Valencia Energy, which operates power plants around the country. Two of Carbon3.ai’s co-founders also hold senior roles with Valencia.