Tech giants Google, Microsoft, Open AI, and Meta are pouring billions into AI data centres, driving a rapid expansion of hyperscale infrastructure. FT associate editor Pilita Clark argues these companies must be more transparent about the environmental fallout of their facilities.

Readers responded vigorously. Some, like Mjk, questioned why local communities have no say over massive data centres while small businesses face strict permitting. Others, such as LW25, warned that unrestricted technological innovation will continue unchecked because no one addresses the root problem.

Commenters debated the trade‑offs. Ao L noted data centres consume about 0.5% of global fossil fuel use versus ~2% from leisure flying, suggesting AI’s climate impact is modest. WT489 highlighted weak energy policies in the UK and Germany compared with China’s rapid renewable build‑out.

The discussion underscores a tension between national security imperatives, profit motives, and the need for sustainable development as AI infrastructure proliferates.