Many energy companies are now offering consumers
the opportunity to purchase electricity from green energy
sources. These green energy sources include, wind energy,
hydro energy, biomass, solar energy and will begin to include
marine energy sources such as wave power, tidal stream and
tidal impoundments and tidal barrages.
This separation of renewable energy from oil,
gas, coal and nuclear is possible due to the Renewable Energy
certificate schemes now being developed worldwide, these certificates
enable units of electricity, such as KWh to be identified
as soon as they are produced and fed into the national grid.
All units must be accounted for both in terms of how and when
they were produced and who sold them to whom. Theoretically
this means consumers can “buy” units from specific
turbines, in reality the actual electrons running through
a consumers meter will not have be generated by any source
in particular, as generally all electricity, however it has
been generated is fed into the national grid. Buying green
electricity in the manner means that you are buying up a certain
tokens that acknowledge that every unit you have used has
been made up for from a renewable source.
Energy Trading companies can only sell an exact
and finite amount of green electricity- that which they have
generated themselves or bought in from other producers. In
some countries such as the UK, schemes are being enforced
which require energy generators to sell a certain percentage
of energy generated from green power sources.
Renewable Obligation Certificates