Power, Cable Size and Fuses

This post shows how to use power to work out the current and then the cable size. It also shows appropriate fuses for the size of the cable used.

DIY Solar Box Cooker - Build Instructions

This article outlines the design of a simple solar cooker for use in the tropics. It is relatively simple to build with readily available materials. It is based on the ‘Heaven’s Flame’ design by Maria Telkes. The design will have to be adopted to have a sloping glass front depending on the latitude of the place of use.

How to run a fridge with off-grid power

One of the challenges of off-grid living is how to power a fridge. This blog post looks at our experiment on hacking a freezer to work as a fridge that uses very little energy.

720 Watt Solar Power System for an shed / summer house /outbuilding

Here are some photos of a DIY 720-watt hour solar power system. This provides LED lighting, charges phones, e-bike batteries, drills, runs power tools, and boils a small travel kettle. 

120 Watt hour Solar Power Pack - for LED lights, charge phones, laptops and cordless power tools

This blog post provides a brief description of a 120 Watt Hour Solar Power Pack. This provides a bright LED, USB charge points, and a 12 V lighter socket for a power inverter. The power inverter produces 230V for low-powered appliances.

Looking after the Lead Acid Batteries in your Solar Power System

Many people rage against Lead Acid batteries and claim that they don't last more than a year or two. This post is about looking after your batteries and get 5 to 10 years of service out of them.

Watts, Volts, Amperes, Ampere hours and Watt hours - what does it all mean?

When planning your off-grid Solar Power system it helps to understand the numbers and terminology. This post explains in simple terms the meaning of these and how they relate to each other.