The Trump administration directed grid operators to require data centers to use backup power as triple-digit temperatures across much of the United States pushed the electric grid to its limits. The move aims to prevent blackouts as extreme heat drives up air conditioning demand while data centers consume massive amounts of electricity.
Grid managers issued emergency alerts as the heat wave stretched power systems to capacity. Data centers, which typically maintain backup generators for their own use during outages, were told to activate this reserve power to reduce strain on the main grid. The directive represents an unusual step to tap into privately held backup capacity during peak demand periods.
The power crisis highlights growing tensions between the rapid expansion of electricity-hungry data centers and grid reliability. Data centers have proliferated across the country to support cloud computing, artificial intelligence, and other digital services, but their power consumption has raised serious concerns about grid capacity and consumer costs.
Three Democratic senators have now launched an investigation into whether major tech companies are passing the soaring electricity costs of data centers on to ordinary Americans. Elizabeth Warren, Chris Van Hollen, and Richard Blumenthal sent letters to Google, Microsoft, Amazon, Meta, and several data center operators demanding greater transparency and accountability. In some regions with significant data center activity, residential electricity bills have increased by as much as 267 percent over the past five years, according to the lawmakers.
"Through these utility price increases, American families bankroll the electricity costs of trillion-dollar tech companies," the senators wrote. They are demanding that data centers and tech companies "pay their fair share of their electricity rates" and cover a greater share of costs upfront for future energy usage.
According to the US Department of Energy, data centers could account for 12 percent of the country's power consumption by 2028. About one-third of the nation's more than 4,000 data centers are located in just three states: Virginia, Texas, and California.
A Cornell study published recently in Nature Sustainability found that data centers could annually consume as much water as 6 million to 10 million Americans and emit as much carbon dioxide as 5 million to 10 million cars.
Opposition to data centers is growing across the country. Local efforts have blocked or delayed roughly 64 billion dollars in data center projects, according to a report published earlier this year by Data Center Watch. The lawmakers noted that contracts between data centers and utility companies are almost always confidential, leaving the public unaware of why their electricity bills continue rising.
One recent Lawrence Berkeley National Laboratory study questioned the link between data centers and increasing electricity prices, finding that data centers may have actually helped reduce average retail electricity prices by allowing utility companies to spread fixed infrastructure costs among more power customers.