PJM does not maintain a formal data-center or large-load interconnection queue. PJM evaluates proposed data-center demand through its annual Long-Term Load Forecast: Load Serving Entities (LSEs) submit adjustments for expected large loads, and PJM uses those requests to assess the generation and transmission needed to serve future demand.
The generator interconnection queue is different. It is a formal application and study process for proposed generating resources. A data-center forecast request is therefore not the load-side equivalent of a generator’s queue position, and a generation-queue statistic must not be presented as a count of data-center projects.
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What people mean by “PJM’s data center queue”
“Data center queue” is convenient shorthand for the process of evaluating very large new electricity loads, but it is not PJM’s formal name for a queue. In a September 29, 2026 article, PJM stated plainly: “PJM does not have a load interconnection queue and relies on Load Serving Entities to submit Large Load adjustments to the Long-Term Load Forecast.”
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1Scan for outdated or missing drivers - takes under a minute2Repair Windows errors before they cause bigger problems3Fix the driver behind crashes, sound loss and screen glitchesThat distinction matters because the word queue suggests a numbered line in which projects apply, receive positions, complete studies and eventually obtain an interconnection agreement. PJM describes the data-center pathway as load forecasting and system planning instead. Proposed demand enters PJM’s planning process through the LSE that serves the site, rather than through a standalone PJM application queue for data-center loads.
PJM began reviewing proposed large-load adjustments for its 2027 Long-Term Load Forecast in September 2026. The review is an annual planning activity, so its purpose is to improve PJM’s picture of future demand and identify the generation and transmission capability that may be required. It is not, by itself, an approval to energize a building or a guarantee that a proposed facility will be served.
How the large-load forecasting process works
1. The serving Load Serving Entity submits the proposal
PJM relies on LSEs to submit “Large Load” adjustments to the Long-Term Load Forecast. An LSE is the entity responsible for representing load-serving needs in PJM’s planning and market framework. For a proposed data center, the first essential relationship is therefore with the serving LSE and the relevant transmission or distribution utility, not with a numbered PJM load queue.
The available evidence does not establish a universal PJM form, fee, deadline or project-count format for every data-center proposal. Those details can depend on the LSE, the service territory and the applicable tariff. What is established is the routing: the LSE provides PJM with a forecast adjustment for the expected large load.
2. PJM reviews the adjustment in its annual forecast
PJM incorporates submitted adjustments into its Long-Term Load Forecast review. The 2027 review that PJM announced on September 29, 2026 illustrates the cycle: proposals are reviewed as part of the forecast rather than processed as individual load-interconnection applications.
A forecast adjustment represents an expectation about future demand. It can help PJM model where and when additional electricity may be needed, but it does not carry the legal or procedural meaning of a completed interconnection study. Readers should treat “included in the forecast” and “approved to connect” as different statements.
3. The forecast informs generation and transmission planning
PJM says it reviews large-load requests to assess the generation and transmission needed to serve expected demand. That planning function can reveal that the system needs additional supply, network upgrades or other changes before a proposed load can be accommodated reliably. The forecast is therefore a system-planning input, not a construction schedule for a particular data center.
Because the process is forecast-based, the public information cited here does not establish a single PJM-wide milestone sequence for every load proposal. It also does not provide a comparable public count of data-center requests. PJM’s own statement that it has no load interconnection queue explains why such a count should not be inferred.
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A generator interconnection queue handles proposed supply resources: power plants and other generating facilities that seek to connect to the PJM-controlled grid. PJM lists generation interconnection among the requests handled through its application portals. Applicants submit formal requests, and projects proceed through interconnection studies that evaluate the proposed connection and any required network work.
The generator process is application-driven. A developer asks to interconnect a defined generating resource at a proposed point of interconnection, and PJM’s study process examines the electrical effects of that request. A queue position or study result has a procedural meaning within that generator process; it does not mean that a plant has been built, energized or is operating.
This is the key contrast with a data-center proposal. Generation is a source of supply seeking a physical grid connection through a formal interconnection pathway. A data center is a large demand forecast that PJM receives through an LSE’s load-forecast adjustment. The two processes may affect the same transmission system, but they answer different planning and approval questions.
Data-center load planning versus generator interconnection
| Comparison | Large-load planning for a data center | Generator interconnection queue |
|---|---|---|
| What is being connected | Demand: a proposed large electricity load | Supply: a proposed generating resource |
| Who submits to PJM | Load Serving Entities submit Large Load adjustments | Generation applicants submit formal interconnection requests through PJM’s application process |
| Primary purpose | Reflect expected demand in the annual Long-Term Load Forecast and plan the generation and transmission needed to serve it | Validate an interconnection request and conduct formal interconnection studies |
| Queue status | PJM says it does not have a load interconnection queue | A formal generation interconnection queue and application process exists |
| What a submission means | A forecast input; it is not an interconnection approval | A step in a study and application pathway; it is not proof that the plant is built or operating |
| Public count cited in the available material | No comparable PJM data-center queue count is established | 715 projects totaling more than 200 GW qualified for the first Cycle of PJM’s reformed process, reported August 3, 2026 |
How a proposed data center should be understood in PJM’s process
A developer evaluating a PJM-region site should think in terms of coordinated load planning rather than waiting for a PJM load-queue number. The following sequence describes the established roles without implying that every utility uses identical paperwork.
- Identify the serving LSE and utility. The LSE is the channel PJM identifies for submitting a Large Load adjustment. Confirm which entity will represent the proposed facility’s expected demand.
- Provide a defensible load forecast to the LSE. The proposal must be expressed as an expected electricity requirement that the LSE can evaluate for inclusion in its forecast submission. The available PJM material does not prescribe one universal data template or acceptance threshold.
- Track the applicable annual Long-Term Load Forecast review. PJM reviews proposed large-load adjustments in its annual forecasting process. The 2027 review was underway when PJM reported on September 29, 2026.
- Use the forecast result as a planning signal. PJM uses expected demand to assess the generation and transmission needed to serve it. A forecast entry can therefore affect regional planning assumptions without constituting a permission to energize the site.
- Handle site-specific service and construction decisions separately. The cited PJM description does not turn the forecast process into a single load-interconnection approval. Developers and their LSE or utility must address the separate commercial, engineering, tariff and construction requirements that apply to the actual service arrangement.
This sequence also explains why a facility can be discussed publicly as being “in PJM’s queue” even though PJM does not recognize a formal load queue. The phrase may describe a proposal being evaluated by an LSE and PJM for planning purposes, not a numbered interconnection position.
What Queue Scope can and cannot tell you
PJM’s Queue Scope tool can help a prospective interconnection customer screen possible points of interconnection. That makes it useful for preliminary orientation: a user can examine possible locations and understand that nearby queued generation may affect a screening question.
PJM explicitly characterizes Queue Scope as informational and says it is not a substitute for formal interconnection studies. A screening result should therefore not be treated as a study outcome, an available-capacity guarantee or an approval. The limitation is especially important when someone tries to use a generation-oriented tool to answer a data-center load question.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.How co-location changes the question
Some proposals place a large load next to, or otherwise co-locate it with, generation. Co-location can make the physical and tariff relationship more complicated, but it does not create evidence of a separate PJM data-center queue.
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On December 18, 2025, the Federal Energy Regulatory Commission directed PJM to establish transparent tariff rules for large loads co-located with generation. That action concerns how such arrangements are governed and priced under PJM’s tariff framework. It is a related regulatory and service issue, not a declaration that PJM maintains a load queue comparable to its generator interconnection queue.
For a co-located proposal, keep the questions separate: how the generating resource enters the formal generation interconnection process; how the associated large load is represented in the Long-Term Load Forecast; and what tariff rules govern the combined arrangement. Treating all three as one queue can obscure the approvals and studies that actually apply.
Why generation-queue numbers are often misreported
PJM reported on August 3, 2026 that 715 generation projects totaling more than 200 GW qualified for the first Cycle of its reformed interconnection process. Those figures describe generation projects. They are not a tally of data centers, large-load requests or facilities awaiting load interconnection.
The error usually comes from collapsing two different measurements into one headline. A generation queue counts supply projects that entered a formal application and study pathway. PJM’s large-load process records forecast adjustments submitted by LSEs, and PJM says it does not maintain a corresponding load queue. Without a published load-queue count, it is not accurate to subtract, compare or combine the 715-project figure with supposed data-center entries.
Even within the generation process, a qualified project is not the same as a completed plant. Queue status and study results describe procedural progress; they do not establish that the resource has been constructed and is operating. The same discipline applies on the load side: a forecast request is not proof that a data center will be built or energized.
Common mistakes when comparing the two processes
- Calling the forecast process a formal load queue. PJM’s September 29, 2026 statement says the opposite: it has no load interconnection queue.
- Assuming a forecast adjustment is an approval. The adjustment informs planning; it does not replace project-specific service, tariff or engineering decisions.
- Using generation-queue totals as data-center totals. The 715 projects and more than 200 GW reported in August 2026 are generation statistics only.
- Treating Queue Scope as a completed study. PJM says the tool is informational and not a substitute for formal interconnection studies.
- Assuming co-location creates a new queue. FERC’s December 2025 action addressed transparent tariff rules for large loads co-located with generation, not a separate PJM load queue.
- Assuming every procedural detail is permanent. PJM’s rules, tariffs and process pages can change, so current requirements and deadlines should be checked before a filing or investment decision.
What to verify before relying on a PJM process description
Use the date and the process name when evaluating any claim. The central no-load-queue statement comes from PJM’s September 29, 2026 account. The generation application and Queue Scope descriptions were available from PJM’s application and tool information accessed October 13, 2026. FERC’s co-location action is dated December 18, 2025.
For a live project, confirm the current PJM tariff, the applicable generation-interconnection materials if generation is involved, and the serving LSE’s requirements for submitting a large-load forecast adjustment. Those checks matter because an annual forecast review, an interconnection study and a tariff approval are distinct processes with different purposes and potentially different schedules.
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