Your electricity bill might be subsidizing the AI arms race, and a group of US senators wants to know exactly how much.

Senators Elizabeth Warren, Chris Van Hollen, and Richard Blumenthal launched a formal investigation on December 16, 2025, into whether the explosive growth of AI data centers is driving up residential utility costs across the country. The probe targets some of the biggest names in tech, including Google, Microsoft, Amazon, Meta, CoreWeave, Digital Realty, and Equinix, demanding transparency around their energy agreements and how the costs of massive infrastructure upgrades are being allocated.

A single AI data center consumes as much electricity as 100,000 households. And when utilities need to build out grid capacity to feed these facilities, the cost of those upgrades doesn’t always land on the company ordering the extra megawatts. It often lands on you.

The numbers paint an ugly picture

In regions with high concentrations of data centers, residential electricity bills have jumped by as much as 267% over five years, according to a Bloomberg analysis from September 2025.