# Grid Synchronicity Explained

> Researchers solved why global power grids drop frequency every 60 seconds.
- Title: Grid Synchronicity Explained · TechCrunch | Shortify
- Summary: Researchers solved why global power grids drop frequency every 60 seconds. Batteries and data centers cause minute power sags as they sync clocks, leading to…
- Keywords: electrical grid, data centers, ups, battery energy storage, frequency drop, resonant frequency, state-of-charge, TechCrunch
- Source: TechCrunch — https://techcrunch.com/2026/11/08/coordinated-disturbances-haunt-grids-worldwide-heres-how-researchers-solved-the-mystery
- Author: Tim De Chant
- Published: 2026-11-08T20:30:00+00:00
- Read time: 1 min
- Topics: electrical grid, data centers, ups, battery energy storage, frequency drop, resonant frequency, state-of-charge, technology, startups
## Global Grid Anomaly
Mysterious electrical sags occur every 60 seconds across power grids worldwide.
## Frequency Drop Mystery
Grid operators faced regular frequency drops that happened at the same time on grids across continents.
## Resonant Frequency Risk
Hydropower plants can cause dangerous ultra-low frequency oscillations through mechanical resonance.
## Initial Investigation
Researchers tested hydropower systems but couldn't explain why the resonance persisted for years.
## Clockwork Clue
The team realized the precise timing required a clock, as disturbances occurred every 60 seconds.
## Jülich Campus Test
Over 80 smart power meters detected minute frequency drops on campus battery systems.
## Ireland Data Center Impact
Data centers caused frequency drops to quadruple from 3 mHz in 2016 to 12 mHz in 2021.
## Grid Stability Risk
Current drops could push grids toward blackouts if other loads also cause sagging.
## Solution Proposed
Add randomization to state-of-charge checks to prevent synchronized disturbances.
## Key takeaway

Batteries and data centers cause minute power sags as they sync clocks, leading to grid instability.