Article
Basics
What wears out, and when
Panels, inverters, heat pumps, batteries and cylinders all have different lifespans. Knowing which is which stops a normal replacement feeling like a failure.
5 min read
Basics
The vocabulary, the units and the bills. The things everything else on the site assumes you already know.
Reading
Article
Basics
Reading your electricity bill
Three numbers on your bill do all the work, and finding them takes about five minutes. They are also the numbers every calculator here asks for.
4 min read
Article
Basics
What a kilowatt-hour is
Bills, quotations and savings on this site are all counted in kilowatt-hours. What one is, and how to find out how many your house gets through.
4 min read