PJM Interconnection, the grid operator serving the largest electricity market in the United States, has reopened its interconnection queue — the formal waiting line new power plants must join before they can connect to the grid — and gas-fired generation leads the intake at 106 gigawatts (GW), according to an April 30, 2026 report by Utility Dive. The queue had been closed to new entrants for years while PJM worked through a massive backlog under reformed study rules.

Executive Summary

The reopening of PJM’s queue is one of the most consequential grid events of the decade for the data-center industry. PJM’s territory — spanning 13 states and the District of Columbia, including the Northern Virginia corridor that hosts the world’s densest concentration of data centers — has been the epicenter of the load-growth crunch. For years, developers of new generation could not even get in line, while demand forecasts climbed relentlessly on the back of AI and cloud expansion.

That 106 GW of gas-fired capacity leads the new intake is the headline signal: developers are betting that dispatchable, fuel-based generation is what the market will pay for. For context, 106 GW of proposed gas alone approaches the scale of PJM’s entire historical peak load — a striking statement of intent, even acknowledging that interconnection requests are proposals, not power plants, and that historically only a fraction of queued projects reach commercial operation.

The Queue Reopens Into a Seller’s Market

An interconnection queue is the study pipeline through which a grid operator evaluates whether a proposed generator can connect safely and what network upgrades it must fund. PJM froze new entries while it transitioned from a first-come, first-served process — which had become clogged with speculative projects — to a clustered, first-ready, first-served model. The reopening is therefore a pressure release: years of pent-up development interest arriving all at once.

The market these projects are entering is unusually favorable to generators. PJM’s recent capacity auctions have cleared at elevated prices, reflecting tightening reserve margins as older coal and gas plants retire faster than replacements arrive and as data-center load grows. High capacity prices are precisely the signal designed to attract new steel in the ground — and 106 GW of gas proposals suggests the signal is being heard.

Why Gas Leads — Economics, Not Ideology

Gas-fired turbines dominate this intake for practical reasons. They are dispatchable — able to run on demand rather than when the weather cooperates — which is what capacity markets and 24/7 data-center loads reward most. They site on relatively small footprints near existing gas pipelines and transmission. And developers can point to a revenue stack (capacity payments, energy sales, and potentially direct contracts with large loads) that pencils today.

But the gas wave faces its own bottlenecks. Turbine manufacturers are reporting multi-year order backlogs industry-wide, EPC (engineering, procurement, and construction) labor is scarce, and gas pipeline expansion in parts of PJM’s eastern footprint has historically faced permitting resistance. Proposing 106 GW is easy; procuring turbines, pipe, and crews for even a fifth of it is the hard part. The queue position is now arguably the cheapest asset in the whole development chain.

What This Means for Data-Center Developers

For hyperscalers and colocation operators stuck in multi-year utility interconnection waits, a generation-heavy queue is cautiously good news: more supply eventually means faster load interconnection and less severe capacity-price escalation. It also strengthens the case for co-location deals, in which a data center sites directly alongside a new plant and contracts for its output — a structure regulators in PJM have been actively wrestling with.

The timing mismatch remains the industry’s core problem. Data centers can be built in 18–24 months; a new combined-cycle gas plant typically takes four or more years from queue entry through studies, permitting, and construction. Even under PJM’s reformed process, the bulk of this 106 GW cannot plausibly serve load until late this decade. Buyers planning capacity for 2027–2028 should not count on this queue cycle to bail them out.

The Decarbonization Tension Nobody Should Ignore

A gas-led buildout sits uneasily beside the carbon-neutrality pledges of the very customers driving the demand. Most major cloud providers maintain public net-zero or carbon-free-energy targets, and a decade of gas additions in PJM would make those targets harder to reconcile with grid reality — unless paired with offsets, carbon capture, or an eventual nuclear and storage wave. The honest framing is that the market is prioritizing reliability and speed-to-power first and emissions second. Whether that ordering persists will depend on state policy in PJM’s footprint, federal rules, and how loudly corporate energy buyers push back through their procurement.

Background

PJM Interconnection grew out of a 1927 power pool among Pennsylvania and New Jersey utilities and today operates the largest wholesale electricity market in the United States. Its territory contains Northern Virginia’s “Data Center Alley,” which by itself consumes more data-center power than most countries. Over the past several years PJM became the poster child for the interconnection bottleneck: thousands of proposed projects — predominantly renewables in earlier cycles — languished in multi-year study backlogs, prompting a federally approved overhaul of its queue process and a temporary halt to new applications.

The reopening lands amid record demand forecasts, plant retirements, and capacity prices that have drawn political scrutiny across PJM’s member states. The resource mix of this new intake — and how much of it survives to construction — will shape the region’s reliability, emissions trajectory, and data-center growth capacity into the 2030s.

Source: At 106 GW, gas-fired generation leads PJM’s newly reopened interconnection queue — Utility Dive report, April 30, 2026, on the resource mix entering PJM’s reformed interconnection process.