Home by Numbers

Battery

Battery — 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 batteries

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

Read the Battery Guide

Run the numbers

Estimate what a home battery could save, how different sizes compare and whether the extra capacity earns its cost.

Open the Battery Calculator

Solar + battery

Compare no solar, solar alone and solar plus a battery on one consistent model.

Compare solar and battery

Already have a quote?

Bring the quoted costs and assumptions together in a free Decision Pack before you commit.

Build a Decision Pack

Are Home Batteries Worth It in the UK? — Compare solar storage, cheap overnight charging and realistic annual savings 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.