Terms, in plain English.

Solar.day is run by Mat Moakes, trading as Green But Not Heard. Postal address: 4th Floor, 18 St. Cross Street, London EC1N 8UN. mat@greenbutnotheard.com.

ICO registration: ZC252862

Solar.day is a free check of which solar and battery routes might suit your home. It is not a survey, and it is not financial, technical or professional advice. It works from your answers and published data, not from a visit.

Gains, costs, payback and returns are modelled for a typical version of your home from sourced, dated figures. Prices, tariffs, VAT and rules change, and so does the weather. Comparisons with savings rates are illustrations, not investment advice. Get an installer quote before money moves, and check anything electrical with a qualified electrician.

Don't put other people's personal details into the site without their permission. Don't scrape, spam or do anything unlawful.

The site is provided as is and may change or stop without notice. I don't exclude anything the law won't let me exclude, and your statutory rights as a consumer are unaffected, but beyond that I'm not liable for decisions you make based on what you read here.

No installer, manufacturer, retailer or energy company pays Solar.day. Products and tariffs are named because they're relevant, not because anyone asked. Statements about named companies are accurate to the date shown and may go out of date.

The words, design and engine are mine unless credited otherwise. Quote and share with attribution.

England and Wales. Last updated: 25 September 2026.