Datacenter Sites by ISO / RTO Region

PJM coordinates the grid across 13 mid-Atlantic and Midwest states. It contains the world's densest datacenter cluster (Northern Virginia's 'Data Center Alley'), and its interconnection queue is the most closely watched speed-to-power constraint in the country.

MISO runs the grid across 15 central US states. Deep industrial land inventory and competitive power pricing make it an emerging datacenter frontier, though queue timelines have lengthened.

WECC spans the entire western interconnection outside California's ISO, from the Rockies to the Pacific Northwest. Abundant hydro and renewables pair with rapidly growing load and long transmission distances.

SERC covers much of the Southeast, a region of vertically integrated utilities, aggressive economic-development incentives, and accelerating datacenter recruitment in Georgia, the Carolinas, and Tennessee.

SPP coordinates the central plains. Among the windiest grids in North America, it offers some of the lowest energy prices and shortest queues — attractive for power-hungry, latency-tolerant workloads.

CAISO runs most of California's grid. Silicon Valley demand and aggressive clean-energy goals collide with high power prices and constrained transmission — a premium but challenging market.

ISO New England coordinates the six-state Northeast. Winter peaking, constrained gas supply, and limited land keep it a niche datacenter market, but proximity to Boston drives latency-sensitive demand.

ERCOT is the standalone Texas grid, and its connect-and-manage model for generation has made it one of the quicker US markets to connect. Datacenter demand is now testing it: in June 2026 ERCOT reported more than 438,000 MW of large-load requests, nearly 89% of them datacenters, and since August 3, 2026 it has paused approvals to energize new datacenter and crypto-mining loads of 75 MW or more until a verification audit and community impact review, due to the PUCT by December 10, 2026, are complete.

NYISO operates the New York State grid. Upstate hydro and nuclear power pair with downstate latency demand, while transmission congestion between zones shapes where new load can connect.