In a rare show of bipartisanship, Senators Elizabeth Warren of Massachusetts and Josh Hawley of Missouri have urged federal energy officials to mandate detailed reporting on the electricity consumption of data centers, amid growing concerns over their impact on national power grids and household bills.
The senators sent a letter on Thursday to the Energy Information Administration, or EIA, calling for "comprehensive, annual energy-use disclosures" from data centers across the country. According to the letter, such data is "essential for accurate grid planning and will support policymaking to prevent large companies from increasing electricity costs for American families." The push comes as the tech industry's rapid expansion of data centers—facilities that power everything from cloud storage to artificial intelligence—has been linked to surging electricity demands in several regions.
The EIA, an independent agency within the Department of Energy, announced just a day earlier on Wednesday that it would launch a pilot program to assess data center energy use. However, that initiative is voluntary and limited to four key areas: Texas, Washington state, Northern Virginia, and the Washington, D.C., metro area. Warren and Hawley's letter appears to seek a more expansive approach, pressing for nationwide, mandatory reporting to better track the sector's footprint.
This effort builds on a wave of legislative activity addressing the hidden costs of data centers. On the same day as the EIA announcement, Senator Bernie Sanders of Vermont and Representative Alexandria Ocasio-Cortez of New York introduced a bill that would impose a moratorium on new data center construction until better safeguards are in place for energy infrastructure. "We can't let corporate greed overload our grids while families pay the price," Sanders said in a statement accompanying the bill.
Earlier this year, in February, Hawley joined forces with Senator Richard Blumenthal of Connecticut on another measure aimed at curbing electricity rate hikes driven by data center growth. That bill proposes tax incentives for energy-efficient data centers and penalties for those that exceed certain consumption thresholds without mitigation plans. Hawley, a Republican known for his skepticism toward big tech, emphasized in introducing the legislation that "these facilities are sucking up power like vampires, and it's time Silicon Valley paid its fair share."
At the state level, similar frustrations are fueling action. In New York, lawmakers are considering a bill that would halt new data center construction for three years, citing the state's already strained power supply. The proposal, sponsored by a coalition of Democrats and independents, argues that without a pause, residential rates could rise by as much as 10% in the coming decade due to the facilities' demands.
Back in December, a group of Democratic members of Congress, including Representatives from California and Virginia, fired off a letter to major tech firms like Amazon, Google, and Microsoft, as well as data center operators such as Equinix and Digital Realty. The missive demanded specifics on current power usage and future expansion plans. "Transparency is the first step toward accountability," the lawmakers wrote, noting that data centers already account for about 2% of U.S. electricity consumption, a figure projected to triple by 2030 according to some estimates from the International Energy Agency.
Industry representatives have pushed back against the regulatory tide, arguing that data centers are vital for economic growth and innovation. A spokesperson for the Data Center Coalition, an industry trade group, stated that "voluntary reporting efforts, like the EIA's pilot, are a better path forward than burdensome mandates that could stifle investment." The group pointed to ongoing commitments by tech giants to source renewable energy, with companies like Google aiming for 24/7 carbon-free power by 2030.
Yet critics, including environmental advocates, contend that these pledges fall short amid the sector's explosive growth. Data centers in Northern Virginia alone, often called "Data Center Alley," consume more electricity than some small countries, according to a 2023 report from the Electric Power Research Institute. Residents in the area have reported frequent brownouts and rate increases, with Dominion Energy, the local utility, seeking approval for new gas-fired plants partly to meet data center needs.
The bipartisan nature of the current push underscores the issue's cross-aisle appeal. Warren, a progressive Democrat, and Hawley, a conservative Republican, have occasionally aligned on tech accountability, from antitrust measures to privacy concerns. Their letter to the EIA highlights shared worries about grid reliability, especially as extreme weather events strain infrastructure. "American families shouldn't subsidize the AI boom," the senators wrote, referencing how data centers' uninterrupted power needs often take priority over residential users during peak times.
Broader context reveals why this matters now. The U.S. electricity grid faces unprecedented pressure from electrification trends—electric vehicles, heat pumps, and industrial reshoring—compounded by data centers' voracious appetite. A recent study by the Lawrence Berkeley National Laboratory estimated that data centers could drive up to 8% of U.S. power demand by 2030, potentially requiring $50 billion in new transmission investments. Without better data, planners say, it's impossible to forecast and mitigate risks like blackouts or price spikes.
States like Georgia and Arizona are also grappling with the issue. In Georgia, where Microsoft and Google have poured billions into new facilities, utilities have warned of capacity shortfalls. Arizona's regulators recently approved rate hikes for residential customers to fund data center expansions, sparking protests from consumer groups. "This is a transfer of wealth from everyday people to tech behemoths," said one advocate from the Southern Environmental Law Center.
As the EIA reviews the senators' request, responses from the agency could come within weeks. EIA Administrator Joe DeCarolis has previously acknowledged the data gaps, telling a congressional hearing last month that "improved surveying is crucial for our forecasting models." Whether the pilot expands or new rules emerge remains to be seen, but the momentum suggests data centers' energy secrecy may soon end.
Looking ahead, the implications extend beyond electricity bills. Policymakers are eyeing incentives for greener data centers, such as advanced cooling tech or co-location with renewables. International parallels abound, with the European Union already mandating energy reporting for large facilities under its Green Deal. In the U.S., failure to act could exacerbate energy inequities, particularly in underserved communities bearing the brunt of industrial growth.
For now, the Warren-Hawley letter stands as a clarion call for accountability in an era of digital transformation. As one energy policy expert at the Rocky Mountain Institute put it, "The grid isn't infinite—knowing the full picture is the only way to power the future sustainably." With bills pending and pilots underway, the coming months will test whether Washington can bridge partisan divides to address this pressing challenge.