Largest US Grid Misses Power Supply Target Amid AI Surge

PJM Interconnection LLC, the largest US electric grid serving 13 states and Washington, DC, reported that power-hungry data centers have driven supply costs up more than 60%, according to the system's watchdog. The surge reflects the strain AI infrastructure is placing on regional power capacity as tech companies race to build computing facilities.

The cost spike comes as PJM missed its power supply target, raising concerns about grid reliability amid accelerating data center construction. The 60% increase in supply costs signals potential margin pressure for utilities operating within the PJM footprint and higher electricity expenses for industrial users competing with AI facilities for capacity.

The shortfall highlights the infrastructure bottleneck facing the AI buildout. Data centers require massive baseload power, and the PJM territory—stretching from Illinois to New Jersey—has become a key hub for cloud and AI infrastructure investment from hyperscalers including Amazon, Microsoft, and Google.

Power generators serving the region may benefit from tighter supply-demand dynamics, while utilities face the dual challenge of meeting surging demand and absorbing higher procurement costs without immediate rate relief.