Home battery price guides
The price pages answer "how much?". These guides answer the questions that come next: is it getting cheaper, what slows an installation down, what will it take off a bill, and what should you ask.
Start here
If you have a quote already, begin with the 20 questions and the quote checker. If you are still deciding on a size, begin with the year-one bill effect guide and the price calculator on the home page.
- Are home battery prices falling?Two years of official figures: small batteries up about 20% per kWh, mid-size down 2%, large up 7%, and 82% more batteries recorded.
- G98 or G99: the network stepWhy the inverter's kW, not the battery's kWh, decides whether you notify after installation or apply before it.
- What a battery takes off a bill in year oneA tool that works from your own tariff and quote, with the caps we always apply and no payback period.
- 20 questions to ask before you signCapacity, itemised lines, location, paperwork, warranty and VAT timing, grouped so quotes become comparable.
- Shop price vs installed priceWhy a box price online and an installed price are different products, starting with how VAT treats them.
- Scotland, Wales and Northern IrelandWhat is UK-wide when you price a battery, and what differs by nation: funding, electricity VAT and export payments.
- GlossaryNominal and usable kWh, G98 and G99, PAS 63100 and the other words on a battery quote.
- Battery price FAQsShort answers to the questions people ask most about what a home battery costs.
Which guide answers which question
Two guides are about the market: the price trend sets the latest official year against the one before, and the four-nations guide explains what changes if you live in Scotland, Wales or Northern Ireland. Two are about the installation: the network application guide explains why some batteries can be fitted and notified afterwards while others wait for an answer first, and the shop-price guide explains why a battery bought as a box is taxed and priced differently from one that is fitted. The last two are about deciding: the year-one bill effect tool runs your own tariff through the sums, and the twenty questions make quotes from different firms comparable.
Every guide uses the same sources as the rest of the site, led by DESNZ's battery installation statistics (published 28 May 2026, checked 3 November 2026), with the date each source was last read. The prices themselves are explained on the methodology page, and you can turn any battery size into a modelled installed price with the solar battery price calculator. If a guide leaves a question unanswered, the contact page reaches us.
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