Solar blog
Practical guides for going solar, written to go with the calculators. Each guide works through the maths with real numbers, so you can check a quote before you sign anything.
System Sizing • How-To
How many solar panels do I need?
Work out how many solar panels your home needs from your electricity bills, peak sun hours and panel wattage, with a worked example and full roof space checks.
Battery Storage • How-To
What size battery do I need for overnight backup?
Work out what size battery you need for overnight backup by adding up the loads you must keep running, then allow for usable capacity and round trip losses.
More guides are on the way. If there is a topic you want covered, tell us through the contact page.
Last updated: 15 November 2026.