Home by Numbers

Solar

Solar — understand the numbers before you buy

Start wherever makes sense for you. Understand the basics, run your own numbers, compare solar with a battery, or make sense of a quote.

  • Free.
  • Independent.
  • No contact details required.

Understand solar

A plain-English guide to the five questions that matter before you buy.

Read the Solar Guide

Run the numbers

Estimate generation, bill savings, export income and simple payback using your own figures.

Open the Solar Calculator

Solar + battery

Compare solar alone with solar plus a battery and see what the battery itself adds.

Compare solar and battery

Already have a quote?

Turn the assumptions into a free Decision Pack so you can sense-check the proposal before committing.

Build a Decision Pack

Are Solar Panels Worth It in the UK? — See how to judge a solar quote's cost against its realistic annual benefit before you buy.

  1. Understand
  2. Calculate
  3. Decide
  4. Take the next step

Home by Numbers keeps the explanation, calculation and decision support connected — without requiring a sales conversation.