Old power stations don't vanish easily. They sit on massive grids, bleed history, and leave behind concrete footprints that demand a second life. Now, an enormous £16.5 billion plan aims to turn the former Chapelcross nuclear power station near Annan into one of the largest data hubs on earth. CX Tech Ltd has officially lodged plans for an eight-building technology campus boasting a staggering 1-gigawatt (1GW) capacity.
If it clears planning hurdles, construction could run from next year through 2035. But this massive digital infrastructure bet is already triggering intense friction between economic ambitions and environmental reality.
What the Chapelcross Project Actually Involves
You aren't looking at a standard server farm tucked inside an industrial estate. This proposal spans a massive footprint in Dumfries and Galloway, designed to house eight distinct data facilities alongside an integrated training center.
Developers claim the campus will deliver around 450 to 500 permanent operational jobs, plus roughly 750 roles during the peak construction window. The scale here is immense. With a 1GW potential capacity, the site would rival or exceed the largest operating data installations anywhere on the planet.
And because power infrastructure is the primary bottleneck for modern technology hubs, old nuclear sites offer a built-in advantage. They are already connected to heavy-duty transmission lines originally built to push atomic energy out to the national grid.
The Power Hungry Elephant in the Room
Let's address the energy question directly, because it's the main reason people are arguing over this project. Modern artificial intelligence and cloud computing workloads demand relentless amounts of electricity. Critics, including the Scottish Greens and Action to Protect Rural Scotland (APRS), argue that a 1000MW facility will place an unprecedented burden on the grid.
Some environmental campaigners point out that supplying this level of continuous power could consume a massive fraction of Scotland's available renewable energy surplus. When you're paying wind farms to turn off turbines during peak generation, channeling that power into computing infrastructure sounds smart on paper. Yet, local critics worry it starves other regional decarbonization efforts and drives up consumer pricing pressure.
On the flip side, proponents argue that reusing decommissioned industrial land keeps developments off pristine greenfield areas where possible, utilizing brownfield assets that already have heavy grid ties.
Tackling the Water and Cooling Dilemma
Water consumption is another flashpoint for hyperscale facilities globally. Massive servers generate intense heat, and traditional cooling setups often evaporate millions of gallons of water daily.
CX Tech has attempted to head off these criticisms in their planning submission. The proposal specifies a closed-loop, non-evaporative air cooling design. According to the developers, operational water usage across the entire eight-building campus will equal the annual consumption of just 32 households—roughly four houses per data centre each year.
If those figures hold up under independent scrutiny, it solves one of the most stubborn environmental complaints associated with modern mega-servers.
Jobs Versus Industrialization
Local opinion is sharply divided. Annan has lived through the slow, decades-long decline and decommissioning of Chapelcross. For many residents, the promise of hundreds of high-value digital, engineering, and low-carbon careers sounds like a lifeline. A dedicated training center is baked into the proposal to create direct pathways for local youth into tech fields.
Conversely, conservation groups argue that transforming rural south Scotland into a massive digital industrial zone damages local landscapes and threatens biodiversity. NATS, the UK air traffic controller, reviewed the plans and raised no technical objections regarding aviation safety, but local planning authorities still face a fierce political battle. The Scottish government has been weighing new national guidelines for large-scale data centres, adding high-stakes political timing to the mix.
If you're tracking where the next generation of digital infrastructure will land, watch how this planning battle unfolds over the coming months. The outcome will set a major precedent for how the UK balances regional jobs against massive grid demands.
Review the local consultation events scheduled in Annan and Creca this October if you want to understand the community friction firsthand, or check the local planning portal to read the full Environmental Impact Assessment yourself.
