NIE Networks has begun using drones to install new real-time sensors on Northern Ireland’s electricity transmission network, the first time this has been done on live power lines anywhere in the UK.
As more renewable generators seek to connect, parts of the electricity network are becoming constrained. Traditionally increasing capacity requires significant investment to rebuild overhead lines. This can be time consuming and disruptive.
The new approach uses Dynamic Line Rating (DLR) technology. In partnership with Heimdall Power, NIE Networks is installing small sensors on overhead lines that measure temperature, wind and sunlight. This live data shows how much electricity each line can safely carry at any moment.
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By using real conditions rather than fixed assumptions, DLR could unlock up to 30% more capacity on existing circuits without physically upgrading them.
Caron Malone Network Development Manager NIE Networks:
“Dynamic Line Rating and live‑line drone installation represent a major step forward in how we manage and future‑proof Northern Ireland’s electricity network. By combining real‑time data with innovative installation techniques, we can unlock significant capacity on existing lines. Using drones makes installation faster, cheaper and safer. Now, we have demonstrated we could do this while lines stay energised, so there is no impact on customers, fewer staff are required on site which means we can roll these sensors out at pace.
This technology makes our network safer, smarter and more sustainable, while supporting SONI and the wider renewables industry to bring more clean, locally generated energy onto the system. We’re proud to be leading the way in the UK with this approach and demonstrating what innovation can achieve for customers and for the energy transition.”
The project is being delivered with SONI, the Transmission System Operator, supporting their work to reduce renewable constraint and make better use of clean, locally generated energy. Together, drones and DLR technology are helping deliver a safer, smarter and more sustainable electricity network for Northern Ireland.
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