The United States' largest power grid operator, PJM Interconnection, is facing an unprecedented supply crisis. This power network, which covers 13 states and serves 67 million people, is nearing its load limit. The near "bottomless" electricity demand from AI data centers in the tech industry has far outpaced the grid's capacity, pushing PJM to the brink of supply and demand imbalance. Mark Christie, former chairman of the Federal Energy Regulatory Commission, pointed out that a few years ago, such reliability risks were still in the suburbs, but now "the risk is right around the corner."

Mismatch Between Demand and Supply

PJM expects an average annual increase of 4.8% in electricity demand over the next decade, a significant challenge for a system that has seen stagnant demand growth for years. Meanwhile, the closure of old power plants is outpacing the construction of new ones, leading to a risk of power shortages. According to data from Dominion Energy, the company has received data center electricity requests exceeding 40 gigawatts, enough to power at least 10 million households, which is twice the total capacity of its Virginia network at the end of 2024. It is projected that by 2039, the peak demand of the system will double.

Market and Policy Tensions

As data centers grow exponentially, PJM is struggling to cope with the surge in demand. Particularly in "Data Center Alley" in Northern Virginia, where companies like Amazon have a significant presence, local electricity demand has reached unprecedented levels. The market has reacted sharply to this trend, with consumers expressing outrage over rate increases and governors from states like Pennsylvania appealing to regulators to cap prices. Meanwhile, tech giants like Amazon, Alphabet, and Microsoft have strongly opposed proposed rules that would mandate data centers to build their own power sources or be cut off during peak hours.

PJM proposed a plan last September to cut off power to data centers when the grid is under extreme pressure, but the proposal faced strong opposition from the tech industry. The tech giants argued that such proposals are discriminatory and expressed concerns about the business risks associated with power outages. Since no consensus could be reached among the parties, the rule-making process stalled in November last year.

Political and Management Challenges

The challenges faced by PJM are not only technical but also political. Its service area spans 13 states, each with different policy orientations regarding power generation types, construction permits, and price regulation. Pennsylvania Governor Josh Shapiro has already complained to federal regulators in 2024, seeking to control price increases. Moreover, dissatisfied with PJM's market mechanisms, governors from Pennsylvania, Virginia, and Maryland have even threatened to withdraw from the organization.

Future Outlook

Faced with such a severe situation, PJM needs to coordinate policies and investments to keep power generation in line with the increasing demand. Interim CEO David Mills emphasized that although the reliability challenges are not insurmountable, they require concerted efforts from all parties. Meanwhile, independent grid monitor Joseph Bowring has filed a complaint with the Federal Energy Regulatory Commission, warning that unless data centers can bring their own power sources, the future challenge for PJM will not be how to ensure reliability, but how to "allocate blackouts."

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