Innovative lightbulb made from a coke bottle filled with water and bleach! Water and bleach in bottle of coke was fitted on the roof. It absorbs and reflects sunlight and is equal to a 55 watt lightbulb.
Stupid-Easy Portable Solar Panels for RV, Off Grid, Boondocking & Camping
USA common spider identification chart - we've got widows & wolf spiders. Widows are beautiful spiders
By using standard 2Watt Polycrystalline cells, available on sites like eBay, you'll enable yourself to build a 100 Watt panel for around $125. Some people even opt for chipped, or B-Grade cells, that produce the same amount of power but are defective by the manufacturer's standards (ie chipped corners, etc). With this choice of solar cells a completed 100 Watt panel may cost less than $70.
Get Off the Grid Now #1: Build Your Own Expandable Solar Power System
Did you know, you can use common bubble wrap as insulation for windows? I had heard of this bubble wrap trick to save energy before, but had never actually gotten around to trying it. Not for every window, but just an idea to consider.
Solar Panel-In-a-Tube Generates Power and Hot Water At the Same Time Solar photovoltaic cells and solar thermal collectors both capture the sun's rays. The first one turns the light into electricity, while the other turns it into hot water for heating.