AI's Climate Pledges Are Quietly Losing to Its Power Bill

Global data center electricity demand grew 17% in 2025, with AI-focused facilities growing 50%, according to the International Energy Agency. Total consumption is projected to nearly double from 485 terawatt-hours in 2025 to 950 by 2030, with the AI-specific slice tripling. Data centers accounted for roughly half of all US electricity demand growth over the past year, more than residential, industrial, and transport combined.

Google's 2025 emissions rose 18% year over year, cumulatively up 80% against the baseline for its own 2030 net-zero pledge. Electricity demand jumped 37%, the largest annual increase in the company's history. Microsoft's emissions sit 23.4% above its 2020 baseline. Neither company has abandoned its climate targets publicly. Both are missing them by a widening margin.

The grid can't move at capex speed, so gas fills the gap

The mechanism behind that gap is becoming visible in permitting filings rather than corporate sustainability reports. Texas's GW Ranch received an air permit for 7.7 gigawatts of natural gas turbines, the largest such approval ever granted, explicitly to power data centers. Gas plant capacity in development nearly tripled in 2025, with more than a third of it earmarked specifically for on-site AI power. Meta has separately requested low-methane gas certificates to offset emissions from gas generation it's building on its own sites.

None of that is what "net zero by 2030" was supposed to look like. But renewable buildout and grid interconnection take years, and AI capex is moving on a timeline measured in quarters. Gas turbines can be permitted and built faster than transmission lines or utility-scale solar and wind can be connected to a strained grid, so companies racing to bring capacity online are choosing gas by default, then trying to offset the emissions after the fact rather than avoid them upfront.

Local opposition is the one force actually slowing this down. More than 75 data center projects worth roughly $130 billion were blocked or delayed in the first four months of 2026 alone, per Data Center Watch, which separately tracks $64 billion in blocked projects overall. More than 300 related bills moved through over 30 state legislatures this year, and at least 69 local bans have been enacted, including a one-year pause in Seattle. Public opposition to a nearby data center jumped from about 50% to 70% within months, according to Ipsos polling, and one resident's monthly electricity bill went from roughly $100 to $281.

Federal climate policy isn't the brake on this trajectory right now. City councils and zoning boards are. That's an unusual place for the actual constraint on a trillion-dollar industry's environmental footprint to end up, and it means the pace of the AI buildout over the next few years may be set less by chip supply or capital availability than by how many more communities decide to say no.

Sources: IEA · Fortune · Axios · Tom's Hardware · NPR · Harvard Gazette · Consumer Reports