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.

Average US household electricity costs rose 7% year-over-year as of September 2025, based on data from the Energy Information Administration.

The US Department of Energy projects that data centers will account for 12% of total US power consumption by 2028.

The senators gave the targeted companies until January 12, 2026, to respond with details about their energy contracts, cost-sharing arrangements with utilities, and any agreements that might result in residential ratepayers picking up the tab for industrial-scale power consumption.

Bipartisan momentum building

In March 2026, Warren teamed up with Republican Senator Josh Hawley on a bipartisan letter urging the EIA to implement mandatory annual energy-use reporting for data centers.

The bipartisan push aims to close a significant transparency gap. Right now, there’s no standardized requirement for data centers to disclose how much energy they consume. Mandatory reporting would, at minimum, create a baseline for accountability.

Tech companies have started offering responses of varying substance. Some have pointed to renewable energy commitments and power purchase agreements. Others have highlighted efficiency improvements in their cooling and computing infrastructure. Warren, however, has criticized these pledges as lacking sufficient detail or accountability.

What this means for investors

If mandatory energy reporting becomes law, it creates a new compliance cost for data center operators. More importantly, it creates a public record that regulators, journalists, and activists can use to build cases for further intervention.

For companies like CoreWeave, Digital Realty, and Equinix, whose entire business model revolves around data center operations, any regulation that forces these companies to internalize more of their energy infrastructure costs could compress margins in an industry that investors have been pricing for aggressive growth.

For crypto-adjacent investors, this matters because many of the same companies building AI infrastructure are also hosting blockchain-related workloads. CoreWeave has deep roots in GPU computing that span both AI and crypto mining. A reporting mandate covers the facility, not the application running inside it.