The Register reports that American datacenters are becoming more efficient at turning electricity into useful compute, especially those equipped with Nvidia hardware. The same report notes that US power emissions restrictions are being wiped out, meaning the grid supplying those datacenters could get dirtier even as the hardware does more per watt.
The tension is straightforward: better efficiency per megawatt is a genuine technical advance, but it can be offset if the electricity itself carries a higher emissions burden. The Register frames this as a mixed outcome — cleaner compute per unit of energy, but potentially dirtier overall operations once the regulatory rollback takes effect.
Because this is a single source, there is no competing view to compare. The report does not claim the efficiency gains are trivial, only that they arrive alongside a policy shift that could undermine their environmental benefit.