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FieldProspects publishes research built from its own database of US power projects, data centers and developers. The fall 2026 queue slip report counts 1,079 planned projects, 161,870.5 MW, that list an in-service year before 2026 and are still waiting to be built, 93% of it in MISO and PJM.

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Report, fall 2026

The queue slip report

161,870.5 MW of planned US power was due online before 2026 and still is not built.

1,079 projects in the seven ISO and RTO queues list an in-service year before 2026. By grid, year due, technology, state and developer.

Past-due MW as a share of each queue

Seven ISO and RTO queues, October 8, 2026

MISO 86,980.3 MW 28.9%
PJM 63,483 MW 24.4%
CAISO 6,145.9 MW 3.3%
ERCOT 3,099.3 MW 0.6%
SPP 2,122 MW 1.6%
ISO-NE 40 MW 0.2%
View as table
GridShare of queue past due
MISO28.9%
PJM24.4%
CAISO3.3%
ERCOT0.6%
SPP1.6%
ISO-NE0.2%
Source. ISO and RTO interconnection queues, via FieldProspects. Past due means a listed in-service year before the snapshot year.
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ReportPublishedHeadline figure
The queue slip reportOctober 8, 2026161,870.5 MW of planned US power was due online before 2026 and still is not built.

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