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Grid Risk Assessment Overview
Comparison of power usage categories and their impact on system stability.
Primary Sources
Officials issue their highest alert yet on data centers' electricity demand
North America’s grid reliability watchdog is sounding the alarm over data centers and calling for immediate action from grid operators. This week, the North American Electric Reliability Corporation (NERC) issued a level 3 alert — its highest warning tier — over how data centers risk destabilizing the grid. The alert makes recommendations on managing how “computational loads” are integrated and managed on the power grid. That includes artificial intelligence data centers, cryptocurrency mines and cloud computing facilities. After issuing a lower-level alert in September 2025, NERC found that the groups running the grid, such as utility companies and regional operators, “did not have sufficient processes, procedures or methods to address risks associated with computational loads,” NERC said in the document. Download the SAN app today to stay up-to-date with Unbiased. Straight Facts™. Point phone camera here The alert comes as data center proposals are growing ever-larger. And if built, the electricity demand from some individual data centers will dwarf the electricity consumption of neighboring cities and entire states. NERC has found that when such large power users turn their computers on or off unexpectedly, the risk of power outages across the grid goes up. In response, NERC is asking data center companies, utilities and grid operators to immediately address the problem, while laying the groundwork for mandatory rules that could be passed by the Federal Energy Regulatory Commission (FERC). “The goal is to ensure that as more industrial-scale consumers connect to the grid, they actively participate in practices that protect grid stability,” NERC said in a statement. What is the grid reliability risk? Small disruptions to the grid occur frequently. A lightning strike can knock out a transmission line. A heat wave can push equipment to its limits. A rapid rise in demand can affect the voltage and frequency of the entire system. That frequency needs to stay steady, or else critical equipment may be damaged. “Sudden surges in electricity output that can come from generators coming online or demand going offline. That’s a problem. It can destabilize the frequency,” said Ed Hirs, an energy fellow at the University of Houston. The grid is engineered to absorb those shocks — but it relies on being able to predict how large electricity consumers will respond when they occur. In a report following its 2025 alert, NERC found that the response from data cen...
A major watchdog says data centers are wreaking havoc on North America ...
The North American Electric Reliability Corporation issued a rare alert, urging operators to address new risks posed by data centers connecting to the grid. Joe Raedle/Getty Images 2026-05-08T09:00:01.233Z NERC oversees grid reliability in the US, Canada, and parts of Mexico. The agency issued a Level 3 alert this week regarding risks posed by data centers. AI training can cause wild power swings, threatening grid stability. Data centers are increasing the risk of power outages and blackouts — and electric grid operators aren't prepared to handle it. The North American Electric Reliability Corporation — the top grid oversight agency for the US, Canada, and parts of Mexico — issued a rare alert on Monday, urging operators to address new risks posed by the deluge of data centers connecting to the grid.NERC issued the Level 3 alert for "essential action" — the agency's highest level — after issuing two previous warnings about data centers in the last nine months.The agency sends alerts to the entities that make the electric grid run smoothly, from regional transmission organizations to power plant owners.This time, the agency stressed that grid operators lack "sufficient processes, procedures, or methods to address risks associated with computational loads."NERC says that data centers — particularly ones running AI workloads — are prone to wild power swings.The constant, rapid fluctuations between extremely high and extremely low power use levels can put entire electric grids at risk of going offline.Power swings "can occur in seconds, leaving 'little or no room for real-time responses,'" the report said.It's not only AI training causing the instability. In its report, NERC said crypto mining and traditional data centers threaten the grid.NERC asked grid operators to take immediate action and file risk mitigation plans with the agency by August 3."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," the agency said in a press release on Monday.
Data Centers - Latest News and Updates - WSJ.com
Data centers provide the physical infrastructure necessary to process and store the information supporting the global financial system, cloud-computing services, and the development of artificial ...
NERC sounds the alarm that data centers risk overtaxing the grid
North America's grid reliability watchdog on Monday issued its most urgent warning about the risks data centers pose to the power system, setting the stage for greater regulation of the industry. The rare Level 3 alert by the North American Electric Reliability Corp., or NERC, comes after several incidents in 2024 and 2025, where more than a gigawatt of data center computational load ...
