 Wind Power Sience Kit is a great tool to learn about renewable energy. You can build a wind turbine to generate electricity, and conduct more than 20 experiments with your wind turbine. $49.95 Sale! $44.96 |  Fuel Cell X7 Hydrogen Powered Car runs on water. With this science kit, you can build a model car that runs on hydrogen gas using a unique reversible fuel cell. $119.95 Sale! $107.96 |  Physics Solar Workshop is Solar Power Technology in Action. It explores the topic of solar energy, focusing on photovoltaic cells. $64.95 Sale! $58.46 |