References behind this guide
Each fact on this site rests on one of these. The table says what each reference supports and when we last read it.
How we use them
Rules come from the body that sets them: BSI for PAS 63100, legislation.gov.uk for the safety regulations, MCS for network notification. Energy figures come from Ofgem, PVGIS and DESNZ. Which? and Easy PV are marked as secondary.
When a reference changes, we update the pages that rely on it. PAS 63100 is under review, the Ofgem consumption values were revised in 2026, and DESNZ updates its battery statistics each year, so those three are the ones we watch most closely. If you find something here that a newer source contradicts, tell us through the contact page; the about page explains who publishes this guide.
Questions about storage in your own home?
Tell us a little about your home and what you want a battery to do. Your message reaches SEO-DONS LTD, which publishes this guide, and we answer by email. It costs nothing to ask and commits you to nothing.
What happens next
- SEO-DONS LTD, the publisher of this storage guide, reads your message.
- We answer by email, using the same sources as the guide.
- What you do next, if anything, is up to you.