So you wanna build your own solar hot water system, perhaps you've been thinking the cost of buying solar panels is too much, think again. I've found a tutorial on a South African company's website, Agama Energy, that shows you how to build your own, and best of all, the parts needed aren't all that expensive, and you could use a lot of recycled materials. This is a really cheap way to start converting your home to cleaner renewable energy.
You still need to purchase the solar/electric geyser, which in my part of the world we call the hot water cylinder, and is the tank that stores and heats your hot water. The article mentions a price in Namibian dollars but for the vast majority of readers you will need to check out the pricing in your local plumbing store. Readers in the US or Europe will probably find they can even obtain a second hand geyser in reasonable condition. If you're interested in making one of these, Agama have also provided a .pdf of the tutorial, and please, let me know how you go, I'd love to post pictures of a reader's system being constructed.
With a little imagination I believe a system like this could easily save any home on water heating costs. Project forward a few years when every third world house or village has one of these and you start to see a different world emerging. Frankly I think the major charities should be funding these systems in every disconnected village, I mean food parcels are great, but reliable hot water in poverty stricken regions could go a long way to improving the health of our brothers and sisters in the third world.



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