Data centers and their growth by region
March 29, 2026
Today the US has over 50 GW of data centers in-service, a figure that has
tripled since 2020. For context, that amount of power is approximately equal to the
entire state of California running at its peak electrical demand 24x7. From an emissions
perspective, powering these data centers emits roughly as much carbon dioxide as 30 million
gasoline cars in a typical year. Data centers cluster in locations with strong connections
to the internet backbone. Major hotspots include Northern Virginia, Dallas, Silicon Valley,
Chicago, Phoenix, and Atlanta. When a data center seeks to connect to the grid, the
interconnecting utility and grid operator need to study how it will impact the system and
what kinds of substation or transmission upgrades it may require. This study and
interconnection process is a major bottleneck for data center developers. The Mid-Atlantic grid,
PJM, currently has the most installed data center capacity at 15.9 GW. The Midwestern grid,
MISO, has seen the fastest growth in data centers over the past six years, with a compound
annual growth rate of 43%. Source: FERC.