Alternative energy is energy that does not come from fossil fuels and thus produces little to no greenhouse gases like carbon dioxide co 2this means that energy produced from alternative sources does not contribute to the greenhouse effect that causes climate changeyou can explore co 2 emissions using the mapmaker interactive here these energy sources are referred to as alternative . This results in you having to use your ac and cooling units less thus reducing your overall power consumption and energy bills get remodeling today 2 gone with the wind one of the alternative energy sources is that of wind energy another form of solar energy excessive heating of our earth due to the burning of fossil fuels has spurred . Geothermal energy finally geothermal energy is energy that people collect from the earth if we think about that for a second we will realize that geothermal energy is yet another great example of alternative sources of energy that is because the earth will always produce heat which means that geothermal energy is renewable. The alternative energy sources known today will evolve in the future by becoming more efficient and using a wider range of renewable resources space solar solar energy is much more intense in space where the earths atmosphere is not present and that area will become the new place for harvesting solar power