Electric grid operators across the United States are warning of tighter conditions as data center demand outpaces new generation in several regions. The North American Electric Reliability Corporation has flagged an elevated risk of summer electricity shortfalls in 2026 and beyond across the PJM, MISO, and ERCOT regions, which together serve much of the country's data center growth.
The PJM region, which covers the mid-Atlantic and parts of the Midwest, illustrates the strain. PJM alone could add 31 gigawatts of data center load over the next five years, about 3 gigawatts more than the expected capacity additions from new power generation in the same period. That imbalance leaves little margin to absorb demand spikes during peak summer and winter conditions.
Geography is shifting in response. Northern Virginia, within PJM, remains the global epicenter of data center activity, but high power costs and long interconnection queues are pushing developers toward Texas, served by ERCOT, and the Midwest, served by MISO. Developers are clustering in places where fiber connectivity, available land, and tax incentives line up with access to power.
The buildout is reshaping utility planning. Power providers are weighing new generation, transmission upgrades, and direct contracts with data center operators to meet the load. Some utilities are pursuing nuclear and renewable supply agreements tied specifically to data center campuses, while regulators examine how the cost of new infrastructure should be allocated among large computing customers and the broader ratepayer base.
Source: nZero - https://nzero.com/blog/u-s-power-demand-hits-new-highs-driven-by-data-centers-ai-and-grid-constraints/