Worldwide,
solar energy is considered as one of the most promising sources of green energy
around the houses. It is a prime source of renewable energy due to its constant
availability (except at night, and even then, it can be stored in batteries)
and ease of use (photovoltaic cells are solid-state, with no moving parts). Solar
energy increased 83% in number of installations worldwide in 2009. Once found
only in water-heating systems and in less-energy-hungry devices such as watches
and calculators, solar power has now found its way into vehicles such as cars,
buses and even airplanes, and can now be configured to suit almost any
household electrical need.
Solar energy is widely understood as
any form of energy that comes from the sun. In the power-generation industry,
solar energy is divided into two major kinds: photovoltaic cells and CSP or
concentrating solar thermal power. Photovoltaic cells convert solar radiation
into electricity through the use of semiconductors, while CSPs use lenses and
mirrors to focus sunlight onto water pipes, generating electricity via the
conventional steam turbine. A third category combines the preceding two, and is
known as concentrated photovoltaics (CPV). Of the three, the photovoltaic
technology (PV) is deemed most practical in producing small-scale green energy
around the houses of people.
Currently, building-integrated
photovoltaics (BIPVs) are favored additions to newer infrastructures, either as
principal or auxiliary sources of electric power. Most of these devices produce
from 1 to 10 kilowatts (at $1.80 per watt in 2010, and expected to decline to
about $1.50 per watt by the end of 2011). A significant obstacle in the use of
BIPVs is the capital installation cost, which is speedily decreasing. Overall,
domestic applications of solar power generation are replacing some of the other
existing sources, especially in the developing world, bringing green energy
around the houses of those who have them.
Green and renewable energy sources include solar power, wind power and ... Of course, the very best thing you can do is to conserve energy in the first place
ReplyDeleteSolar power provides the energy you need to cool your home with clean electricity generated by the sun. It is the best green energy sources available,
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