PJM Warns of Power Shortages as Data Center Demand Skyrockets

PJM Interconnection, which manages electricity for 67 million people, is facing unprecedented challenges as demand from data centres surges. The grid operator has warned of a power reserve shortage in the coming years—its first ever—and is now considering capping electricity prices to stabilise costs.

State governments and industry stakeholders are pushing for urgent action to prevent supply shortages and rising expenses for consumers.

The rapid growth of data centre demand has caught the energy sector off guard. With supply chains strained, delays in building new power plants have worsened the mismatch between planned capacity and actual construction. Experts highlight that these bottlenecks could lead to further tightening of supply and higher costs for consumers.

In late 2024, the governments of Illinois, Maryland, New Jersey, and Pennsylvania sent a joint letter to PJM. They urged the operator to extend its price cap by two years, arguing that new power plants need more time to come online. While power generators typically oppose such caps, many stakeholders now support the extension to shield consumers from rising prices.

PJM's board has responded with a series of measures to address the crisis. These include improving power load forecasting, speeding up construction timelines, and repurposing existing plants. The operator also plans to submit formal proposals to the Federal Energy Regulatory Commission (FERC), introducing 'expedited interconnection' paths to bring new power plants online faster.

PJM's Chief Operating Officer, Stu Bresler, has stressed the need for bold action. He warned that without significant changes, the region—and the nation—could face serious reliability and affordability issues in the near future.

PJM is now working to balance the surge in data centre demand with the need to keep electricity reliable and affordable. Formal proposals to FERC aim to fast-track new power sources, while state officials and stakeholders continue pushing for extended price protections. The outcome will determine whether consumers face higher costs or whether the grid can adapt in time to meet growing needs.