Source: https://www.neso.energy/data-portal/system-frequency-data
Tools: Python, matplotlib
Posted by PhysPhD
![2025 UK National Grid Frequency [OC]](https://www.byteseu.com/wp-content/uploads/2026/03/ujwbq6u4w1og1-1536x719.png "2025 UK National Grid Frequency [OC]")
Source: https://www.neso.energy/data-portal/system-frequency-data
Tools: Python, matplotlib
Posted by PhysPhD
2 Comments
So it’s a distribution centered around 50 Hz, but with a ***notch*** at 50 Hz? How does *that* happen? 🤔
Fun fact – the grid frequency fluctuating is such a distinct fingerprint it can be used to accurately match an audio recording to a very specific date and time as the slight hum gets picked up – learned thanks to (of course) [Tom Scott](https://youtu.be/e0elNU0iOMY)