Data centers can crash the grid in seconds. Four companies pitch a fix
After a Virginia power fault wiped out 3,100 MW of demand in an instant, AI infrastructure firms propose rules to make data centers steady the grid instead of shocking it.
What happened: On July 22, a routine transmission fault in Northern Virginia triggered data centers to switch to backup power, instantly erasing about 3,100 MW of demand, a voltage jolt felt from Washington to Chicago. It echoed a 2023 incident where roughly 60 data centers in the same region dropped off the grid at once. Alarmed, NERC issued its highest-level grid alert in May. Now executives from NVIDIA, Invenergy, Emerald AI and Heron Power have jointly proposed three rules for AI facilities to stop being a grid liability.
Why it matters: AI data centers are being built faster than the grid can safely absorb them, and the risk is not hypothetical anymore, it has already knocked out gigawatts of demand in seconds and drawn federal regulatory alarm. How this gets resolved affects everyone on the same wires: reliability of power at home, and potentially the size of electricity bills, since data center growth is already a factor in rising rates in several regions.
How it works, plainly: The proposal has three tiers. First, do no harm: batteries at a data center should absorb voltage dips and keep the facility running instead of yanking huge load off the grid instantly. Second, flex when needed: facilities should trim power use during rare peak-stress hours, which Duke University research suggests could let the existing grid absorb roughly 100 GW of new demand without waiting years for upgrades. Third, add to the grid: temporary on-site power built to get an AI facility running fast should eventually connect to and strengthen the shared grid, not sit walled off as a private plant forever.
The rollout: This is a proposal, not a settled standard. FERC's June 18 orders now require all six U.S. regional grid operators to justify or rewrite their rules for connecting large loads like data centers, putting pressure on a national timeline. Silicon Valley Power and Texas's ERCOT have started sketching performance-based frameworks that reward this behavior, though Texas's rules are still being finalized. Nothing here is mandatory yet, it depends on regulators actually writing it into law.
