British energy regulator Ofgem on Wednesday proposed fees and stricter rules for AI data center developers to cull “unviable, stalled or speculative projects” that are taking up scarce grid capacity amid skyrocketing electricity demand.

It comes as the UK moves to grow its cloud computing and artificial intelligence industries but grapples with a sharp spike in grid connection requests – which Ofgem says have more than tripled in less than a year.

The amount of electricity capacity being sought by firms wanting to plug into the UK’s grid spiked from 41 gigawatts to 125 gigawatts between November 2024 and June 2025, driven largely by demand from data center projects, the regulator said in a press release on Wednesday.

The figure is nearly triple the UK’s 2025 peak electricity demand of around 46 gigawatts.

Under the proposed rules, developers would have to pay a refundable fee of between £237,500 and £712,500 ($316,000 to $947,000) per megawatt of electricity, Ofgem said. The fee would be forfeited if a project exits the grid connection queue before reaching energization.

The measure is expected to “tackle unviable, stalled and speculative projects,” according to the regulator.

In March, the UK government announced reforms aimed at clearing speculative grid connection requests, which it said more than quadrupled in the six months prior.

The reforms come as Brits face an ongoing energy price crunch; electricity and gas prices more than doubled in the UK in 2022 following the escalation of the Ukraine conflict, when most European nations imposed sanctions on Russia and began phasing out cheap Russian gas supplies for more expensive alternatives. According to Ofgem, this year’s average household energy bill is expected to be around £1,862, almost 50% higher than in 2021.

While the Western restrictions had a detrimental impact on the Russian economy, it has adapted to them and learned to “minimize their effects,” according to Moscow. Kremlin spokesman Dmitry Peskov has warned that “sanctions are a double-edged sword” and hurt both Russia and the countries that impose them.