PJM to curtail data center power as grid capacity reaches breaking point

The mandate targets data centers consuming 50 megawatts or more, forcing them to participate in demand response programs that compensate users for temporary outages. With data center electricity usage projected to quadruple by 2035, operators are scrambling to balance the grid. Companies affected by these cuts will likely receive warnings ranging from thirty minutes to several days, depending on forecasted load conditions.

Faced with these interruptions, many facilities will likely pivot toward on-site power generation. While this provides a buffer, it creates new environmental friction. Most firms rely on diesel backup generators, which are currently restricted by federal regulations to 100 hours of use annually for emergencies. Controversy has already flared in Northern Virginia, where Vantage Data Centers faced scrutiny over reports suggesting their diesel backups could inflict millions of dollars in local health damages.

PJM, which serves 67 million customers across a territory stretching from Virginia to Illinois, has struggled to manage the rapid influx of high-demand users. Wholesale electricity prices have nearly doubled over the past year, a spike the grid’s independent market monitor directly attributes to the proliferation of data centers. As capacity auctions fall short, the tension between infrastructure stability and the growth of the digital economy continues to intensify.