PJM's capacity backstop plan reflects a new reality for power markets

The rapid expansion of data centers and other large energy users is changing how electricity demand is forecast, supplied, and managed across the United States. PJM Interconnection’s proposed Reliability Backstop Procurement is the latest indication that the market is entering a period in which load growth may outpace the development of new generation and transmission infrastructure.

For brokers and customers, this is not simply a policy development. It could influence capacity costs, contracting decisions, product structures, and long-term energy strategies throughout the PJM region. At SmartestEnergy, we are closely considering these market changes as we help our partners and customers evaluate their energy needs and manage future risk.

Demand growth is reshaping power markets

PJM recently filed a proposal with the Federal Energy Regulatory Commission seeking approval for a one-time Reliability Backstop Procurement. The proposal is intended to address a 6.8 GW capacity shortfall for the 2028/2029 delivery year following PJM’s most recent capacity auction.

At the center of the issue is rising demand from data centers, artificial intelligence infrastructure, and other large-load customers. PJM projects that data center and large-load demand could increase by as much as 70 GW by 2038. Meanwhile, new generation, transmission infrastructure, and interconnection capacity can take years to develop.

From my perspective, the concern is not demand growth alone. It is the speed at which major new loads can come online compared with the time required to build the resources needed to serve them reliably.

Recent grid events underscore reliability challenges

During an extreme heat wave in early July, PJM served the highest peak load in its history, reaching approximately 168 GW while deploying numerous operational measures to maintain reliability. The event demonstrated the increasingly narrow margin between available supply and growing demand, particularly during periods of severe weather.

Later in the month, a transmission disturbance in Northern Virginia triggered the temporary transfer of approximately 3,800 MW of data center load to backup generation systems. While service reliability was maintained and no customer load was shed, the event highlighted both the scale of modern data center electricity consumption and the growing role these facilities play in grid operations.

Taken together, these developments demonstrate that the challenges PJM is preparing for are not simply future concerns. Grid operators are already managing the impacts of significant demand growth in real time.

What this means for brokers and customers

PJM’s proposal could have implications beyond the immediate procurement of additional capacity. If supply continues to lag demand, customers may face continued capacity price pressure and greater uncertainty when evaluating future energy costs.

For brokers, these developments make it increasingly important to discuss capacity exposure and long-term market risk with customers rather than focusing only on current commodity prices. Customers planning expansions, opening new facilities, or adding energy-intensive operations may also need to engage suppliers earlier and provide more detailed information about their expected load, timing, flexibility, and reliability requirements.

This is especially important for large users. PJM is exploring approaches that could require certain future loads to bring dedicated supply resources or accept curtailment during system emergencies. Large customers may therefore need to consider whether load flexibility, demand response, backup generation, storage, or direct supply arrangements can become part of their broader energy strategy.

Bringing new supply to the grid

PJM is also working to accelerate the development of new generation. The grid operator recently announced that 715 projects representing more than 200 GW of potential capacity qualified for study under its reformed interconnection process.

The new “first-ready, first-served” framework is intended to prioritize viable projects and reduce delays caused by speculative applications. Proposed resources include natural gas, energy storage, nuclear, and renewable generation.

Not every project will be completed, however. The market must look beyond the size of the queue and consider how much capacity can realistically be financed, permitted, interconnected, and operational when needed.

Looking Ahead

PJM's Reliability Backstop Procurement proposal is about more than addressing a near-term capacity gap. It reflects recognition that the power sector has entered a new phase of sustained demand growth driven by data centers, electrification, and emerging technologies.

While PJM may be at the center of today's discussion, utilities and grid operators across the country are confronting many of the same challenges. The industry's ability to align new load with new supply will play a critical role in maintaining reliability, affordability, and resilience in the years ahead.

The challenge is no longer determining whether electricity demand will grow. The challenge now is ensuring the infrastructure needed to support that growth arrives in time.