North America’s power grid watchdog warns data centers are putting pressure on power supply

The North American Electric Reliability Corporation (NERC), the organization responsible for monitoring the reliability of the power grid across the United States, Canada and parts of Mexico, has warned that rapidly growing large power users such as data centers are creating new risks for electricity systems. In an official press release, NERC said the power grid is facing “unprecedented challenges” because of the surge in large electricity-consuming facilities. The organization has now issued a Level 3 Essential Action Alert that asks registered power companies and grid operators to take immediate steps to reduce risks to the bulk power system.According to NERC, some large power users have caused sudden reductions in electricity demand and major power oscillations that happen within seconds. The watchdog warned that these events leave little or no time for grid operators to respond in real time, creating a possible threat to grid reliability.The organization also released new voluntary guidelines called “Risk Mitigation for Emerging Large Loads.” The guidelines are aimed at utilities, transmission operators, equipment manufacturers and companies running large facilities such as data centers.As the grid faces unprecedented challenges from a surge in large power consumers, NERC is taking significant steps to ensure the reliability of the bulk power system (BPS). NERC released a Level 3 Essential Action Alert, Computational Load Modeling, Studies, Instrumentation, Commissioning, Operations, Protection, and Control, outlining seven actions registered entities must implement to address immediate risks posed by computational loads interfacing with the BPS. The Level 3 Alert was issued as NERC observed customer-initiated large load reductions and significant oscillations that occur in seconds, leaving little or no room for real-time responses, threatening BPS reliability. The deadline for registered entities to submit their responses is August 3, 2026.In another move to address emerging large loads, NERC released new voluntary guidelines to safeguard grid reliability. The Reliability Guideline: Risk Mitigation for Emerging Large Loads, recommends actions for traditional utilities and grid operators, and the companies behind these large loads including equipment manufacturers. The goal is to ensure that as more industrial-scale consumers connect to the grid, they actively participate in practices that protect grid stability. These steps highlight that proactive planning and participation can enable even more of these facilities to come online reliably and quickly. The guideline also acts as a reliability bridge while NERC updates its formal Reliability Standards to address these new challenges.Registered entities subject to the Level 3 Alert are encouraged to act now by reading the alert and submitting responses by the August deadline. And, although non-binding, NERC strongly urges all relevant entities, from transmission operators to equipment makers, to adopt the recommended risk mitigation strategies outlined in the Reliability Guideline.