Large Load Forecast to 2035 by ISO and Zone

The PJM large load forecast, ERCOT large load forecast, and NYISO outlook run to 2035. Annual megawatts are weighted by energization probability and expected timing, by ISO, zone, utility, and substation.

Related large load interconnection pages

• Data center interconnection queue
• PJM and ERCOT large load map
• Flexible data center load
• Substation capacity
• ISO load zones
• Energization probability model
• Monthly market reports
• Sources and methods

Frequently asked questions

What is a large load interconnection request?

A request by a large electricity customer, such as a data center, semiconductor fab or hydrogen plant, to connect new demand to the transmission grid, usually 20 MW or more.

Which grids does the Large Load Monitor cover?

PJM, ERCOT and NYISO today, covering 1,100+ requests and 260+ GW, with MISO, ISO-NE, CAISO and SPP planned.

How is energization probability estimated?

An interpretable model scores each request on study stage, substation headroom, site control and regulatory signals, then weights MW by probability and expected timing.