Most of the energy that we pay for comes from power plants
that run on coal or oil. Not only are these energy-sources expensive
and limited (it’s only a matter of time before all the wells are
empty), but these power plants are big polluters, and the carbon dioxide
they release into our atmosphere is a major cause of global warming.
To better our planet, we must invest in clean, renewable
energy. By utilizing natural processes – wind, sun, and water
– we can power our homes and offices, thereby curbing our dependency
on oil. Other large-scale, green energy sources include biomass and
geothermal. While wind and hydro electricity are limited by geographical
location, one clean electricity source gains popularity every day: solar
power.
As the name implies, solar power comes from the sun. Even
before humans inhabited the Earth, the sun supported all life on our
planet and it only makes sense that we utilize it power our homes and
offices. Through a (somewhat) basic process, we can convert the sun’s
rays into usable energy.
Solar products rely on
solar panels
to transfer energy, which are common on small electronics like watches
and calculators. These panels are made from silicon – a material
with a unique quality that allows electrons to become delocalized and
move around freely. However, electrons do not have any direction, which
means their movements are random. Other materials (junctions) must be
built in to either excite or repel these random electrons, forming them
into a steady stream, or current. Currents supply the energy we need
to power solar products.
Besides curbing pollution, there are many health benefits
in using clean electricity. Using solar lamps curbs our need for kerosene
lamps and other flammables. There is very little chance of power surges,
fires and other mishaps. Also, using solar power improves the indoor
air-quality of your home. Electric companies are now beginning to give
financial incentives to people who utilize solar power in their home.
The US Department of Energy recognizes our need for clean
electricity and they have taken admirable steps toward providing green
energy. At least 50% of energy users are now able to purchase renewable
energy from their power supplier, and nearly all customers have the
option of purchasing renewable energy certificates, which covers the
high costs of producing power from renewable energy sources. These certificates
also increase revenue that encourages additional green energy projects.