Editorial policy
How our guides are researched, written, checked and corrected.
How we research
Every guide starts from primary sources: government energy agencies, network operators, regulators, standards bodies and manufacturer specification sheets. We list them at the end of each guide so you can check them yourself.
Worked numbers
When a guide includes a calculation, we show the inputs and the method, so you can repeat it with your own figures.
Countries and languages
Rules, tariffs and rebates differ between countries. Guides written for a specific country say so, and translations are checked against that country’s own sources rather than translated word for word.
AI assistance and human review
Some articles are drafted or translated with AI assistance. A human editor checks every claim against its source, rewrites where needed and approves the final text. Illustrations made with AI are labelled “AI-generated illustration” in their credit line.
Corrections
If we get something wrong, we fix it and note the change at the end of the guide. You can report an error through the contact page, and every change is listed on our corrections page.
Independence
No installer, retailer or manufacturer pays for coverage. The site will carry display advertising, which is always labelled and kept separate from the guides.