Several large Texas data centers and crypto facilities have failed key grid reliability tests ahead of summer peaks, according to ERCOT and recent reporting, raising concerns about potential destabilizing events on the Texas power grid.
In a power grid, supply must meet demand for electricity to prevent overcapacity or overvoltage. However, data centers are generally designed to disconnect from grids during voltage disturbances, unlike many traditional energy consumers. This prevents damage to data center equipment, but can lead to an oversupply of power to other consumers, worsening the effects of voltage disturbances.
During a recent test of routine voltage disturbance resistance, the Electric Reliability Council of Texas (ERCOT) reported that four clusters of large electricity consumers, including data centers, abruptly disconnected from the grid. According to ERCOT, each of these clusters could trigger more than 5,000 megawatts of demand tripping—roughly the load of a large city such as El Paso.
Since 2023, ERCOT has identified 26 events of data centers and crypto mining facilities abruptly disconnecting from the power grid during voltage disturbances. In 2022, a failed transformer caused many crypto facilities and data centers, among other consumers, to disconnect, yielding a surplus of 1,700 megawatts of power—about 5 percent of the Texas grid’s total demand.
ERCOT is reportedly tightening requirements, reviewing failures, and planning ahead of the Texas summer demands, to protect the grid from disruptions.
