Green energy includes natural energetic
processes that can be harnessed with little pollution.
Anaerobic digestion, geothermal power, wind power, small-scale
hydropower, solar power, biomass power, tidal power and
wave power fall under such a category. Some versions may
also include power derived from the incineration of waste.
More controversial is nuclear energy's
claim to be green. It is not sustainable, nor renewable[1].
However nuclear waste is a pollutant if released into
the biosphere, and there are carbon dioxide and other
greenhouse gases generated by the large amount of energy
required by transport, mining and pre- and post-production.
Hence, nuclear power is rarely included in official green
energy schemes[citation needed]. Proponents of Nuclear
Power tend to argue that the Nuclear waste is not released
into the biosphere during normal operation and that the
carbon dioxide emissions per kilowatt hour of generated
electricity is comparable to those of other green energy
sources, such as wind power[citation needed].
Likewise, medium or large-scale hydroelectric
power or sources of air pollution such as burning biomatter
or petroleum, consume water and are often excluded from
the label 'green energy'
