Applications
Sodium-ion batteries for solar storage
A sodium-ion battery stores solar electricity in the same practical way as an LFP system. The differences sit inside the battery and its controls; your design still begins with household loads, solar yield and inverter capability.
Size from energy, not chemistry
Use interval consumption data to estimate the energy you can shift from daylight or a cheap tariff period. Oversizing leaves capacity idle; undersizing clips useful solar. Usable kWh, inverter kW and backup circuit design are separate decisions.
Winter considerations
Low-temperature charging can help in an unheated garage, but British winter solar production is also low. A wide temperature range does not create energy. Time-of-use charging may provide more winter value than solar self-consumption.
System questions
Confirm export limiting, DNO approval, solar MPPT inputs, backup changeover, black-start behaviour and monitoring. A sodium battery tied to one inverter family can limit later expansion, so ask how replacement modules and firmware will be supported.
Questions answered
Do I need solar panels?
No. A grid-connected battery can charge on a time-of-use tariff, subject to the tariff and system settings.
Will it work in a power cut?
Only if the inverter and installation provide an approved backup output; ordinary grid-tied operation must shut down safely.
Sources
- Register energy devices in homes or small businesses — UK Government, checked 10 November 2026.
- Galvani stackable sodium-ion battery — Eleven Energy, checked 10 November 2026.
Sources last checked 10 November 2026. Product availability can change.