Presented by Daniel Toriola
Solar energy technologies offer a clean, renewable and domestic energy source. Solar energy technologies are
poised for significant growth in the 21st century. Solar energy technologies offer a clean, renewable and
domestic energy source.
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Shedding Light on Cheaper Solar Energy
By Brenda Townsend Hall
Shedding Light on Cheaper Solar Energy by Brenda Townsend Hall
Renewable sources of energy are the key to solving two of the worlds most pressing yet seemingly
irreconcilable problems. On the one hand the developing world needs vastly to increase access to
affordable energy because, at present, 1.6 billion people in the world's poorest countries do not have a
power supply. However, on the other, we cannot go on depleting the world's finite resources of fossil
fuels and contributing to the emission of harmful greenhouse gases by burning them. Thus sustainable
development is threatened by a 'double whammy': the difficulty of meeting increasing demands for
energy, without which development aims cannot be met, and the by environmentally harmful systems
most often used to provide it.
Affordable, renewable energy sources would contribute greatly to breaking this impasse. However, the
field is a complex one and nobody believes a single solution will be found that can answer all the
world's energy needs. Even renewable sources have their drawbacks - wind and solar systems, for
example, may never be able to stand alone as energy providers because they are, by their very nature,
intermittent. However, they can be used very effectively in conjunction with other systems. A judicious
mix of energy-producing systems can contribute to sustainable development by increasing the
availability of energy to the poor, while reducing harmful impacts on the environment. But an
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