What is greenenergy? There are many people who still don't fully understand what
this type of energy is and why we need it. Alternative energy is any
type of energy that is sustainable and is fully renewable. Examples
of these are solar, wind, water (hydro), biomass and geo-thermal.
Alternative energy will
eventually take over from the mainstream sources such as coal and gas
which are non-renewable and are fast becoming too hard to extract,
not to mention too expensive. For now, however, they remain on the
fringe due to the fact that many of them are still in the
experimental stage, or they are expensive to set up.
Solar power is one
alternative energy that is probably most used in domestic homes. In
sunny climates solar panels can generate quite a lot of energy which
can be stored in batteries if unused. Excess solar energy can also be
sold back to the electricity grid. Solar panels are expensive to
install, despite government grants, so should be viewed as a long
term investment.
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