The rapid growth of artificial intelligence (AI) is casting a long shadow over the climate goals of some of the world's biggest tech companies, including Google, Amazon, and Microsoft. According to recent sustainability reports from these giants, their efforts to meet net-zero emissions targets are being severely hampered by the enormous energy demands of AI. The figures make for grim reading: Google's carbon footprint has risen by a staggering 25% year-on-year, while Amazon's has increased by 16%.
The primary culprit behind this surge in emissions is the construction and operation of new AI data centres, which require vast amounts of electricity to power their computations. This 'dual challenge', as Google describes it, involves not only managing the environmental impact of these centres but also meeting the growing demand for AI infrastructure. Amazon, meanwhile, has acknowledged that its path to sustainability is far from straightforward.
Just a decade ago, companies like Google, Amazon, and Microsoft were leading the charge in corporate sustainability, setting ambitious net-zero targets and investing heavily in renewable energy projects such as wind and solar power. However, the intense competition in the AI sector has seemingly taken precedence over environmental concerns, with stock valuations increasingly tied to AI integration.
Microsoft's own sustainability report is expected soon, but its previous documentation showed a 23% increase in emissions compared to a 2020 baseline – a trend that may be mirrored by its expanded investment in AI infrastructure. Meta's 2025 sustainability report was even more alarming, with a 64% year-on-year jump in emissions despite its pledge for net-zero emissions by 2030.
Alarmingly, all four major tech companies are now turning to fossil fuels to meet the power requirements of their AI data centres, signing contracts for large volumes of gas-generated electricity. This shift away from renewables has significant implications for the UK's climate targets and energy security, with some estimates suggesting that planned gas-fired power plants in the US could emit greenhouse gases equivalent to Australia's entire annual output.