News tagged with renewable energy
Scotland passes turbine test to harness tidal power
(Phys.org) -- An underwater turbine being used for harnessing tidal power to generate electricity for homes and businesses has successfully completed its testing period in the island of Eday, one of Orkneys ...
Liquid batteries could level the load
The biggest drawback to many real or proposed sources of clean, renewable energy is their intermittency: The wind doesnt always blow, the sun doesnt always shine, and so the power they produce ...
Feb 14, 2012 |
5 / 5 (9) |
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New method to examine batteries -- MRI from the inside
There is an ever-increasing need for advanced batteries for portable electronics, such as phones, cameras, and music players, but also to power electric vehicles and to facilitate the distribution and storage of energy derived ...
Chemistry / Analytical Chemistry
Feb 12, 2012 |
4.5 / 5 (10) |
0
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Solar start-ups set new efficiency records
(PhysOrg.com) -- Although Alta Devices and Semprius make different types of solar panels, both start-ups have been breaking records in the past few days. Santa Clara, Calif.-based Alta Devices announced that ...
Novel alloy could produce hydrogen fuel from sunlight
Scientists from the University of Kentucky and the University of Louisville have determined that an inexpensive semiconductor material can be "tweaked" to generate hydrogen from water using sunlight.
Aug 30, 2011 |
4.9 / 5 (15) |
16
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REN21 renewable energy report shows healthy growth
An annual report published by the Renewable Energy Policy Network for the 21st Century (REN21) shows that despite a troublesome worldwide economy over the past year, international investment in renewable energy sources continues ...
'Cling-film' solar cells could lead to advance in renewable energy
(PhysOrg.com) -- A scientific advance in renewable energy which promises a revolution in the ease and cost of using solar cells, has been announced today. A new study shows that even when using very simple ...
Nanotechnology / Nanomaterials
Jul 04, 2011 |
4.5 / 5 (10) |
11
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Teaching algae to make fuel
Many kinds of algae and cyanobacteria, common water-dwelling microorganisms, are capable of using energy from sunlight to split water molecules and release hydrogen, which holds promise as a clean and carbon-free ...
May 24, 2011 |
4.3 / 5 (10) |
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Voice-based phone recharging
(PhysOrg.com) -- The noise that we produce can be a lot of things. It can be a valid means of communication. It can be an annoyance when you are trying to get to bed at night. It can be a migraine waiting ...
Study claims 100 percent renewable energy possible by 2030
(PhysOrg.com) -- New research has shown that it is possible and affordable for the world to achieve 100 percent renewable energy by 2030, if there is the political will to strive for this goal.
Great balls of evolution: Microbiologists evolve microorganisms to cooperate in new way
University of Massachusetts Amherst microbiologists Derek Lovley, Zarath Summers and colleagues report in the Dec. 2 issue of Science that they have discovered a new cooperative behavior in anaerobic bacteria, known as int ...
Dec 02, 2010 |
4.4 / 5 (5) |
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Bright future for solar power in space
Solar power gathered in space could be set to provide the renewable energy of the future thanks to innovative research being carried out by engineers at the University of Strathclyde, Glasgow.
Technology / Energy & Green Tech
May 30, 2012 |
3.3 / 5 (9) |
17
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Engineers aim to boost the future of renewable energy by collecting solar power in space
Solar power gathered in space could be set to provide the renewable energy of the future thanks to innovative research being carried out by engineers at the University of Strathclyde, Glasgow.
Technology / Energy & Green Tech
May 16, 2012 |
3 / 5 (6) |
9
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America's clean energy policies need a reality check
America's approach to clean energy needs to be reformed if it is to meaningfully affect energy security or the environment, according to two new articles by Stanford writers.
Technology / Energy & Green Tech
May 01, 2012 |
3.7 / 5 (10) |
89
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UN calls for doubling renewable energy by 2030
UN chief Ban Ki-moon made a call to double global consumption of renewable energy over the next two decades in order to ensure sustainable economic development.
Technology / Energy & Green Tech
Apr 21, 2012 |
3.5 / 5 (13) |
110
Renewable energy
Renewable energy is energy generated from natural resources—such as sunlight, wind, rain, tides, and geothermal heat—which are renewable (naturally replenished). In 2006, about 18% of global final energy consumption came from renewables, with 13% coming from traditional biomass, such as wood-burning. Hydroelectricity was the next largest renewable source, providing 3% of global energy consumption and 15% of global electricity generation.
Wind power is growing at the rate of 30 percent annually, with a worldwide installed capacity of 121,000 megawatts (MW) in 2008, and is widely used in European countries and the United States. The annual manufacturing output of the photovoltaics industry reached 6,900 MW in 2008, and photovoltaic (PV) power stations are popular in Germany and Spain. Solar thermal power stations operate in the USA and Spain, and the largest of these is the 354 MW SEGS power plant in the Mojave Desert. The world's largest geothermal power installation is The Geysers in California, with a rated capacity of 750 MW. Brazil has one of the largest renewable energy programs in the world, involving production of ethanol fuel from sugar cane, and ethanol now provides 18 percent of the country's automotive fuel. Ethanol fuel is also widely available in the USA. While most renewable energy projects and production is large-scale, renewable technologies are also suited to small off-grid applications, sometimes in rural and remote areas, where energy is often crucial in human development. Kenya has the world's highest household solar ownership rate with roughly 30,000 small (20–100 watt) solar power systems sold per year.
Some renewable energy technologies are criticised for being intermittent or unsightly, yet the renewable energy market continues to grow. Climate change concerns coupled with high oil prices, peak oil and increasing government support are driving increasing renewable energy legislation, incentives and commercialization. New government spending, regulation, and policies should help the industry weather the 2009 economic crisis better than many other sectors.
For more information about Renewable energy, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.