Solar & home battery storage
Battery storage is where solar starts paying for itself after dark. A battery stores the power your panels make by day. It then gives that power back in the evening peak, so you buy far less from the grid.
It is our largest and fastest-moving category. We stock storage from small 5kWh units up to stacked systems of many batteries. Both AC-coupled (retrofit) and DC-coupled (hybrid) types are on offer, and sizing follows your evening use.
What this category covers
Home battery storage
Solar battery storage (retrofit)
Hybrid / DC-coupled systems
Stackable / expandable batteries
Off-grid battery banks
Brands we stock & compare
UK buyers ask about the Tesla Powerwall, GivEnergy and FoxESS most. The Powerwall is a large all-in-one AC battery. GivEnergy is UK-built and easy to expand, while FoxESS offers keenly priced stackable storage.
How to choose battery storage
Size the battery to your evening and overnight use, not to your roof. Your bills show how much power you use after dark. Many UK homes land around 5–10kWh, but your own figure counts most.
Next, choose between AC-coupled and DC-coupled storage. An AC-coupled battery adds to an array you already have, so your inverter stays. In contrast, a DC-coupled system uses a hybrid inverter and needs fewer parts.
Finally, check how the battery will earn its keep. A time-of-use tariff lets you charge at a low price and use the power at peak times. Similarly, the Smart Export Guarantee can pay you for spare power sent to the grid, although rates differ.
Our home battery storage cost guide compares the cost per kWh of the popular options. Because most batteries need a compatible inverter, the solar inverter comparison is worth reading too, and the solar panel kits buying guide shows how a kit can be ready for storage later. To plan the whole system, see solar inverters and solar panels and kits.
How Much Does Home Battery Storage Cost in the UK? (2026 Price Guide)
Buying battery storage for a project?
Battery Storage — common questions
Can I add a battery to my existing solar panels?
Yes. An AC-coupled (retrofit) battery adds storage to an existing array without replacing your inverter. However, for a new install, a hybrid inverter with a DC-coupled battery is usually more efficient.
How many kWh of battery storage do I need?
Size the battery to your evening and overnight usage rather than your roof. Many UK homes land around 5–10kWh. Our 2026 battery price guide explains how capacity, cost per kWh and tariffs interact.