A 3 GW data-center load drop briefly stressed the PJM grid in Northern Virginia
Annual_Judge_7272 · reddit · 2026-07-24
- A Reuters-linked Reddit thread says a transmission-line outage in northern Virginia triggered a sudden disconnect of data centers from the grid.
- More than 3 GW of demand reportedly dropped almost instantly, about 3% of PJM’s load at the time.
- The disturbance was large enough to cause voltage issues and flickering lights for consumers across a wide area, though the grid ultimately stayed up.
- The post argues hyperscale data centers can behave like giant on/off switches, creating a new grid-stability risk as AI and cloud demand keep growing.
- It also notes that regulators are already looking at rules to manage abrupt demand drops from these facilities.
Related event: Power Line Fault Causes 3GW Data Center Load Drop in Northern Virginia(2 posts)→
More from Infra
- LLM Serving Metrics Thread: Why TPOT and Uptime Make or Break User Experience — abhijithneil · 2026-09-11
- PlanetScale launches sharded Postgres: 768 servers acting as one, 1PB scale — dhruv2038 · 2026-09-11
- Can a 7900 XTX 24GB run Qwen locally? Reddit seeks ROCm tok/s benchmarks — thenomadexplorerlife · 2026-09-11
- RTK Terminal Compression Cuts Tokens but Leaves Your AI Coding Bill Unchanged — Bartaseth · 2026-09-11
- SF Compute founder: buying compute is 'an absolutely awful experience' right now — IgorCarron · 2026-09-11
- SmolVM open-sources persistent computer infrastructure for agents that outlive chat sessions — aniketmaurya · 2026-09-11