Alternative energy is an alternative to fossil fuel. Wind and hydroelectric power are the direct result of differential heating of the Earth's surface which leads to air moving about and as the air is a lifted precipitation form. Some alternative energy such as solar energy is the conversion of sunlight into electricity using panels or collectors. Biomass energy is stored sunlight contained in plants. Geothermal energy, which is a result of radioactive decay in the crust combined with the original heat of accreting the Earth, and tidal energy is the conversion of gravitational energy. Some modern alternative energy devices have been invented such as Ortarkey chair Solar Boats, Sun Stash Portable Solar Power Charger, The Walk Car and Solar powered fan baseball cap, Solar Fire Starter.

Related Societies: European Wind Energy Association, Global Wind Energy Council, World Wind Energy Association, World Council for Renewable Energy, American Wind Energy Association, Citizen Partnerships for Offshore Wind (CPOW)