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Installing a sodium-ion home battery in the UK
Treat a sodium-ion installation as an electrical energy-storage project, not a chemistry experiment. Use the maker’s approved system design and a competent installer.
Survey and design
The installer should assess loads, solar generation, earthing, cable routes, fire separation, ventilation, access, flood exposure and the structure supporting the battery. A cold-tolerant battery is not automatically weatherproof; the enclosure rating controls outdoor use.
Grid connection
Grid-connected storage may need notification or approval from the local Distribution Network Operator. UK Government guidance distinguishes “connect and notify” from “apply to connect” routes and points installers to G98, G99 and G100 processes.
Handover
Keep the single-line diagram, settings, serial numbers, commissioning record, warranty, emergency isolation instructions and installer contact. Ask for a demonstration of backup mode and safe shutdown. Make sure another qualified engineer could understand the system if the original installer disappears.
Questions answered
Do I need planning permission?
It is not generally required for a normal domestic battery, but location and property constraints vary; check with the local planning authority when in doubt.
Can it use my existing inverter?
Only if both manufacturers support the exact combination and firmware. A shared nominal voltage is not enough.
Sources
- Register energy devices in homes or small businesses — UK Government, checked 10 November 2026.
- Domestic battery energy storage systems — UK Government, 2 October 2020.
- Galvani stackable sodium-ion battery — Eleven Energy, checked 10 November 2026.
Sources last checked 10 November 2026. Product availability can change.