tech
January 22, 2026
From pylons to plug sockets: what makes up the UK’s electricity grid?
For nearly a century, a system of turbines, substations, wires and more has powered everything from your kettle to entire cities. We take a look at 11 of its most essential elements …
TL;DR
- The electricity grid comprises interconnected infrastructure for power transport.
- Power generation includes traditional sources as well as renewables like wind and solar.
- Transmission grids use high voltages for efficient long-distance transport.
- Distribution systems deliver electricity to consumers at lower voltages.
- Substations connect transmission and distribution grids, transforming voltages.
- Transformers adjust electricity voltage levels for transmission and distribution.
- Pylons support overhead transmission lines, with new designs being introduced.
- Transmission lines carry electricity over long distances with minimal loss.
- Ground wires protect transmission lines from lightning.
- Insulators prevent electricity leakage to supporting structures.
- Distribution lines carry lower voltage electricity to homes and businesses.
- Interconnectors link national electricity systems to share energy.
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