In only one hour the Sun scatters upon the Earth a
volume of energy higher than the global consumption of a whole year.
It is a free, renewable and non polluting energy.
So, why not harness it?!
That's what the photovoltaic technology does! Different
from the solar water heaters, currently so common, the photoelectric
effect converts the energy of light provided by the Sun into electric
power, to feed lamps, TVs, water pumps and desalinators, computers,
refrigerators or any other electric equipment.
The increasing global demand for energy and the impact
of the energy policies on the community and the environment create
the need to look for an energy source capable of purvey humanity
in an inexhaustible way and serve as basis to a sustainable development.
Photovoltaic solar energy is being appreciated
more and more, since the environment problems grow worse and the
raw materials begin to exhaust, the continuous exploitation of fossil
and nuclear fuels becomes intolerable to sustain the "power
orgy" that our society is habituated to.
Solar Energy shows several advantages, mainly in countries
like Brazil, that shows high insolation in quite all regions:
- It is a clean energy that doesn´t generate any
kind of polution.
- Doesn't burn any fuel.
- Easy to install. You can do it by yourself without
- Minimum maintenance. There are no moving parts.
- Modules have a proven usefull life of 25 years.
- Allows your energy self-sufficiency.
- No electric bills. Sun is for free!
PV is the solution to supply power to sites where
the grid doesn´t reach or when the supply is precarious.
It is more and more used for rural lightning and communications,
water pumping and electrification of cattle fences.
Remote health stations are also benefited by Solar
Energy. By using solar modules it is possible to power refrigerators
to preserve vaccines, to supply lightning and communication.
In the USA as in Europe the subsidized development
of Solar Energy is giving to an increasing number of people the
assurance that there is an economical and conscious answer for the
electric power issue through the self-sufficiency and independence
provided by this technology.
Thanks to the explosion of the demand experienced
within the last years, there are a growing number of organizations,
user groups and magazines focus on independent power generation
Put simply, photovoltaic cells utilise sunlight to
provide electricity. With no moving parts or chemical emissions,
it's an effective way to reduce the damaging carbon dioxide emissions
pumped into the atmosphere at the power station.
Linked cells are encapsulated into modular panels
- often a rectangular shape about a metre long. These are then interconnected
to provide electrical power, which can be harmonised with grid electricity
and fed back into the network.
Providing power is used efficiently, an average south-facing
house in the UK has sufficient roof area for modules to provide
most of your electricity.
Please note that there is a distinction between solar
PV modules (which provide electricity) and solar water heating modules
(which provide active water heating).
Solar PV is a non-polluting energy source, increasingly
recognised as a major renewable technology for the future.
Installing your own solar photovoltaic (PV) system
means that you can generate your own electricity from the free and
inexhaustible energy from the sun, and reduce your electricity bills.
A photovoltaic system never needs refuelling, has
no moving parts, emits no pollution, is silent, and requires minimal
PV applications fall into two categories: standard
bolt-on systems and integrated systems. Bolt-on systems literally
bolt onto the existing envelope of the building (on top of your
roof tiles or vertical façade).
Integrated systems replace the existing envelope (replace
roof tiles with PV tiles, or PV cladding replaces existing external
PV grants are only available for equipment and work
directly related to the PV system. This includes the cost of the
modules, inverter(s), installation, grid connection and warranty.
Unrelated building works are not eligible.
Only modules and inverters that are approved can be
Thanks to its portability and ease of installation,
Solar Energy may easily be applied to several other activity fields:
- Remote radio and TV stations.
- Camping, motor-homes and boats.
- Water desalination.
- Public lightning.
- Marine and aviation signal lights.
- Supplying of military and scientific bases.
- Even robots in Mars!