MONDAY 01 DECEMBER, 2008 |

UK And Australia Progress On Feed In Tariffs
With royal assent last week granted to Britain's controversial Energy Bill,
Britain is now committed to dramatically reduce its greenhouse gas
emissions.
The
Energy
Bill will oblige the UK to cut gas emissions by 80 per cent by 2050 and
additionally see the introduction of a feed in tariff, paying owners of small
grid connected
wind
energy and
solar
power systems a premium rate on all electricity they produce.
Feed
in tariff programs, when implemented properly, have been demonstrated to
significantly boost the uptake of
grid
connected renewable energy systems in homes and businesses. However, for a
feed in tariff program to achieve its full potential, it must be based on a
gross model.
Under a gross model, payments are made on all energy produced, whereas a net
program pays only on surplus electricity exported to the grid. A feed in tariff
rate must also be high enough in terms of premium rate paid per kilowatt hour.
The rate that householders and businesses in the UK will receive on electricity
generated is yet to be determined.
Australia meanwhile is still thrashing out a nationalised, uniform gross feed in
tariff program
as
proposed in a bill by
Senator
Christine Milne of the Australian Greens earlier this year. While
most
states offer feed in tariffs, prices and conditions vary widely and most are
based on a net model that provides little incentive for home owners to install
solar power systems.
It was expected by many in the renewable energy industry that that recent
Council Of Australian Governments (COAG) meeting held over the weekend in
Canberra would see a formal major announcement on the implementation of a
national feed in tariff program, but according to the
COAG
communique:
"COAG agreed to a set of national principles to apply to new Feed-in Tariff
schemes and to inform the reviews of existing schemes. These principles
will promote national consistency of schemes across Australia."
Timelines, details of the national principles and more in-depth information
regarding the agreement between governments as discussed at the COAG meeting is
not yet available; but no announcements were made regarding any federal funding
of related programs.
Polymer Solar Cell Breakthrough
Imagine having your car or even house covered in colour coded solar cells, or a
solar
panel as thin and as flexible as a piece of paper - yet much stronger. Researchers
at the UCLA Henry Samueli School of Engineering and Applied Science are working
towards such versatility in solar power solutions.
The team have designed a new polymer with solar cell applications that
improves on the sunlight absorption and conversion attributes of other
polymers. The research team discovered that by substituting a silicon atom for a
carbon atom significantly enhanced the material's photovoltaic properties.
A polymer is a type of low cost plastic, used most commonly in packaging and
pipes.
Polymer solar cells have been around for quite some time, but their
efficiency has been quite low and they also suffer from environmental
degradation. The new polymer developed by the UCLA team has reached 5.1 percent efficiency in
the study published in the Journal of the American Chemical Society; but
according
to researcher Professor Yang Yang, has improved to 5.6 percent in the
lab.
While traditional solar cells on the market such as those used in
monocrystalline
and
polycrystalline
solar panels have an efficiency of anywhere from 12% - 18% and
amorphous
thin film solar panels achieve efficiencies of up to 8%; the advantage
of the new polymer cells aside from their flexible properties is they are far
cheaper to produce than monocrystalline, polycrystalline or thin film. Yang
also believes that with further development, the polymer solar cell can achieve
a 10 percent efficiency.
Given the nature of solar product development, don't expect to see the new
polymer solar cells on the general market for quite some time, however it's
encouraging to see new technologies and efficiency breakthroughs announced
nearly daily now, which bodes well for a cleaner and greener energy future
courtesy of
solar
power
News for Friday 28 November, 2008
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