Renewable energy is no longer just a good idea it is a practical alternative for the home owner. If you were to contract a company to install a solar panel system to could be paying a hefty five figure bill. On the other hand the Earth 4 Energy kit will cost you under $50 and then about $200 for materials and that is it. The popular download manual is intended for those with little or no experience in DIY or engineering. Not only will it take you through all the steps of building a network of solar panels there are detailed instructions on how to build a wind turbine generator.