So Energy Customers and Free Home Batteries

So Energy and home battery storage

Checked 30 September 2026. Tariffs and products change — check with So Energy before deciding.

So Energy installs solar and batteries through So Solar, using Duracell-branded batteries through a partnership Duracell confirms on its own site. Prices are by quote, with finance available.

So Energy doesn’t have a battery-specific import tariff. Its So EV tariff has a cheap window from midnight to 5am for EV and plug-in hybrid owners with a half-hourly smart meter; its page doesn’t mention home batteries.

Exporting with So Energy

Checked 30 September 2026. Tariffs and products change — check with So Energy before deciding.

So Export Flex is open to anyone, even if you don’t buy your electricity from So. So Bright Export pays a much higher rate, but only for solar-and-battery systems So installed — a clear reason So Solar customers keep their battery exporting through So. Read how tariffs affect what a battery can save.

So Energy’s possible sale

Checked 30 September 2026. Tariffs and products change — check with So Energy before deciding.

So Energy’s majority owner, ESB, began a sale process in July 2026, and press reports in September 2026 named EDF among the bidders for So’s customers. No deal had been announced when we checked. If So’s customers move to another supplier, So EV, So Bright Export and So Solar could change — we’ll update this page when the outcome is known.

If you’re thinking about a So Solar battery

Checked 30 September 2026. Tariffs and products change — check with So Energy before deciding.

So Solar installs its systems in around two days and lists MCS, RECC, TrustMark and NAPIT accreditations, with a 10-year battery warranty. Bought batteries are yours — and so are the maintenance, insurance and eventual replacement once warranties end.

The Free Home Battery Scheme works the other way round: the scheme owner owns, maintains, services and insures the battery and handles replacement and recycling where required — see who owns and maintains the battery. Which suits you depends on whether you’d rather own the equipment outright or avoid the upfront cost and responsibility.

So Energy tariffs and a battery

Checked 30 September 2026. Tariffs and products change — check with So Energy before deciding.

So Energy’s main tariffs — So Fixed, So Green Tracker and So Flex — are single-rate, which gives a battery less to work with than a time-of-use tariff. So EV has a cheap window from midnight to 5am for EV owners, and So has trialled a personalised two-rate tariff, So Unique, which had a waiting list when we checked. See electricity bill savings with a battery.