An alternative means of energy or method of producing such that can do a work and/or stored for working at a later time without utilizing traditional methods or combustibles.
Note: Most people take for granted that nearly all energy is produced by combustible fuels, i.e. coal plants, diesel/gas generators, nuclear plants (expensive way to boil water- toxic), natural gas plant.
In order to cut down pollution & increase efficiencies alternatives need to be explored. See the categories below for specifics.
Cold Fusion Electric Car Solar Wind