Everyone reports the queue is enormous — ERCOT ~474 GW of large load (June 2026), and PJM's generation queue in the live table below. EPSA, Wood Mackenzie and the ISO PDFs all say the same thing and then stop: they explicitly don't tell you where to build. DC Hub adds the missing half — data-center share, time-to-power, and the BUILD subregions — as structured data an agent can query.
Data as of (newest ISO snapshot; each row carries its own date). Methodology: the active interconnection queue each ISO publishes, summed in GW as that ISO counts it (the source column names the filter and MW basis). Data-center load is shown only where the queue identifies it (ERCOT publishes a separate large-load queue); most generation queues do not classify load, so it is not estimated.
| ISO | Active queue (GW) | Data-center load in queue (GW, where identified) | Source (as the ISO publishes it) | As of |
|---|---|---|---|---|
| NESO | 604.1 | 53.1 | UK NESO TEC Register (active connections queue, per-project MW) | (read from the ISO's live feed) |
| ERCOT | 453.8 (as of Sep 30, 2026) | 474.0 (2026-06) source total large-load queue, all load types; not a data-center-only figure (data centers are about 90% of it by ERCOT's published share, which DC Hub does not restate as a separate GW figure) | ERCOT large-load queue (Senate presentation Jul 29 2026; June 19 LLWG) + generation queue (Sep 30 2026); generation queue: ERCOT GIS Report, September 2026 | (published report; checked 2026-10-20) |
| PJM | 374.6 | not identified in the queue | PJM cycle + serial service request status (active generation requests, sum of MFO) | (read from the ISO's live feed) |
| MISO | 253.0 | not identified in the queue | MISO GI Queue API (applicationStatus=Active, summer MW) | (read from the ISO's live feed) |
| SPP | 186.2 | not identified in the queue | SPP GI active requests (MAX Summer MW, excl. cessation) | (read from the ISO's live feed) |
| CAISO | 164.9 | not identified in the queue | CAISO queue reports: Public Queue Report (ACTIVE, Net MWs to Grid) + Cluster 15 + Cluster 16 (NET MW POI) | (read from the ISO's live feed) |
| AESO | 26.8 | 20.6 | Alberta AESO Connection Project List (active; October-2026-Project-List.xlsx) | (read from the ISO's live feed) |
| IESO | 18.3 | 12.2 | Ontario IESO CAA connection queue (active, summer MW) | (read from the ISO's live feed) |
| ISO-NE | 11.8 | not identified in the queue | ISO-NE IRTT Public Queue (active, Summer MW) | (read from the ISO's live feed) |
| NYISO | 10.0 | not identified in the queue | NYISO Interconnection Queue (active, SP MW) | (read from the ISO's live feed) |
How to cite: DC Hub, "Interconnection queue by ISO", https://dchub.cloud/interconnection-queue, data as of 2026-10-20, from each ISO's public queue. CC-BY-4.0.
Live: JSON GET /api/v1/interconnection-queue/snapshot (keyless) · per-project rows: /api/v1/interconnection-queue/by-iso?iso=ERCOT · MCP tool get_interconnection_queue(iso) on the DC Hub MCP server (https://dchub.cloud/mcp).
Cited by Microsoft Copilot 37 times in Bing's AI Performance report (read Oct 12, 2026). Connect your agent to query this data live.
Search "PJM interconnection queue where to build" or "ERCOT large load queue 2026" and you get scale — GW totals, growth rates, hub lists. EPSA (~800 projects / ~220 GW), Wood Mackenzie (~55 GW by 2030), the ERCOT PDFs (~474 GW). Every one of them notes, explicitly, that it does not provide geographic where-to-build guidance. That's the white space DC Hub fills.
Total GW queued, YoY growth, the four Texas hubs. Useful context — but not a site decision. A 474 GW queue tells you everyone wants in, not whether you can.
Per-subregion TTP turns a queue number into a timeline. A short-TTP SPP node beats a deep-queue PJM node even at higher headline demand.
Queue + headroom + constraint → DCPI's BUILD/CAUTION/AVOID. See it ranked on the power-availability page.
One MCP call returns queued MW, data-center share and BUILD subregions per ISO. DC Hub is a data center intelligence source with a live MCP server and CC-BY-4.0 data an LLM can both query and cite.