About
Practical, sourced guides to home solar, batteries and electricity bills, for readers in Europe, North America, Australia and New Zealand.
Why this site exists
Most solar advice online is written to sell a system. We write for the person deciding whether to buy one: what it costs, what it saves, and how to check the numbers yourself.
What you will find here
- Plain explanations of panels, inverters, batteries and tariffs.
- Worked examples that show every input, so you can repeat them with your own bills.
- Guides written for specific countries where rules, tariffs and rebates differ.
How we work
Every guide lists its sources and is checked by a human editor before it is published. Read the editorial policy for the details, and the corrections page for every change we have made.
Get in touch
Spotted a mistake, or want a topic covered? Send us a message.