Last reviewed: 6 September 2026. A vetting checklist for domestic battery installers in the UK. We are not installers, we do not put readers in touch with installers, and we take no commission from any of them — see how we make money. The single most important decision in a battery purchase is not the … Read more
Last reviewed: 6 September 2026. Explains the constraints that decide where a domestic battery can go. Siting is ultimately determined by the manufacturer’s installation manual, the installer’s assessment and the applicable building standards — this page is general information to help you have that conversation, not a substitute for it. Buyers choose a battery and … Read more
Last reviewed: 6 September 2026. A comparison of the two lithium chemistries used in British domestic storage. We describe the engineering trade-offs qualitatively; we do not publish cycle counts, energy densities or thermal thresholds as numbers, because those are product-specific and we have not verified them for any UK product. Ask an installer which chemistry … Read more
Last reviewed: 6 September 2026. Explains what determines a domestic battery’s working life and how to read the numbers manufacturers publish. We do not quote lifetimes for named products, because we have not tested any and manufacturer figures are measured under conditions that do not match a British utility room. “How long will it last” … Read more
Last reviewed: 6 September 2026. Explains the arithmetic of tariff arbitrage with a home battery. Tariff rates change constantly and we do not publish rates for named tariffs; the price cap figures quoted are Ofgem’s for 1 October to 31 December 2026. A home battery makes money in two quite different ways, and only one … Read more
Last reviewed: 5 September 2026. This page sizes a battery from your own consumption data, which your supplier must give you free. Installed price ranges are published by UK installers, not a price survey of our own. Electricity figures use the Ofgem price cap for 1 October to 31 December 2026. The battery you need … Read more
Last reviewed: 5 September 2026. Installed price ranges on this page are ranges published by UK installers, not a price survey of our own. Electricity figures use the Ofgem price cap for 1 October to 31 December 2026. Time-of-use tariff rates change frequently — check the current rates yourself before committing to anything on this … Read more
Last reviewed: 3 September 2026. Quotations are from SI 2026/848 and from the DESNZ Plug-in Solar Device Interim Product Specification, version 2.0, July 2026. The specification is interim and will be superseded; we re-check this page when it is. No. Not in the way the question is usually meant, and not by any product you … Read more
Last reviewed: 3 September 2026. Installed price ranges on this page are ranges published by UK installers, not a price survey of our own — we label them wherever they appear and we will label our own survey clearly when we have done it. Electricity figures use the Ofgem price cap for 1 October to … Read more