Very cheap solar power
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From: habshi on 10 Mar 2010 18:43 Ten years from now when we are all generating surplus power, we will marvel at these feed in tarriffs which will make the west energy independent. Note there is profit from day 1 , no need to wait ten years. Also in the news are electrified roadways costing just $400k a km which will transfer power to electric car batteries as the car drives , giving an unlimited range. Roadside wind turbines and solar panels and even the panels built into the road itself will supply fossil free energy http://www.businessgreen.com/business-green/news/2259235/electrified-roads-power Researchers in South Korea have developed a way to charge electric vehicles on the move by embedding magnetic components in the road that can inductively charge vehicles passing over them. The system, developed by scientists at the Korea Advanced Institute of Science and Technology, is designed to increase the range of zero-emission electric vehicles including buses and cars, while cutting down on battery size. It uses the same kind of electric charging technology sometimes found in electric toothbrushes, which allows a device to charge without requiring direct contact between metal elements. They suggested that batteries could be a fifth of their conventional size when used in conjunction with the technology, helping to make electric vehicles lighter while significantly increasing their range. The university already has four prototype buses using the technology on its campus, according to reports from news agency Reuters, and hopes to have the technology embedded in roads in Seoul, the South Korean capital. However, at a cost of $353,500 (�237,000) per kilometre of road, the technology does not come cheap. .... excerpt independent.co.uk They took the plunge last autumn when their 2.2kWp (kilowatt peak) PV arrived on site. The cost of installation was �10,500, but almost immediately, they started to see their bills decrease, and now the solar panels generate most of the electricity used in the farmhouse. Along with these savings, the new FITs will see them receive between 29.3p/kWh and 41.3p/kWh, which could deliver a tax-free annual income of nearly �1,000, regardless of whether the energy is used or exported back to the grid. Any energy they do export will gain them a further 3p/kWh. Government figures show that in practice, a household using 4,500kWh of electricity a year could see an income of �750 from energy generated (at a tariff of 30p) and a top-up of �50 for unused electricity exported to the grid. They also quote a saving of �150 on power drawn from the grid as a result of owning a renewable energy source. This gives an annual saving of �950. The utility company and solar energy specialists Npower � who helped the Jordans realise their PV project � estimate that an average domestic PV (between 1kWp and 3 kWp) would start at around �7,500, meaning your investment would have paid for itself after eight years. And it's not just PVs that will benefit from April. In all, there are five types of green energies that are eligible, all offering at least 10 years of fixed tariffs for their owners. And if you have more than one system � solar and wind, say � you'll be metered separately and gain on both. But many potential customers will still find the upfront costs beyond their budget. Help is in the pipeline, though, as the Government backs up its figures with a parallel scheme of "green loans" that will be attached to the house rather than the person who took it out. Pay-as-you-save green finance has yet to become legislation, but once in place, home owners will see another common barrier to installing a renewable energy source removed. It appears the Clean Energy Cash Back scheme has ambitions to stimulate a huge uptake on self-generated energy. Recently, the Energy and Climate Change Secretary, Ed Miliband, announced that 10 per cent of UK homes could be fitted with low-carbon-energy technology by the end of the decade, with hopes of 700,000 solar PV units being installed. One such urbanite gre who's already signed up is Ismail Patel, who owns a house in Yorkshire. He has 10 panels on his roof, which generate more than two-thirds of his annual electricity. "The panels have been a fantastic investment," Ismail says. "The system works as easily as it did when we were using mains electricity." Donnachadh McCarthy, who runs the environmental consultancy 3 Acorns Eco-Audits, has been campaigning for more than a decade for the government to introduce feed-in tariffs into the UK. He installed a solar electric system into his London home 13 years ago and has some tips for people wanting to benefit from the new tariffs. "When installing a system, really try and get every extra panel you can, as a major part of the cost is the actual installation," says McCarthy. ....
From: jimp on 10 Mar 2010 19:07 In sci.physics habshi(a)anony.net wrote: > Ten years from now when we are all generating surplus power And pigs grow wings... > Researchers in South Korea have developed a way to charge electric > vehicles on the move by embedding magnetic components in the road that > can inductively charge vehicles passing over them. Old news as this was done years ago. The bottom line is it is too expensive to be usefull for much other than charging stations at bus stops. > The university already has four prototype buses using the technology Yep, and that's all it is good for. > They took the plunge last autumn when their 2.2kWp (kilowatt > peak) PV arrived on site. The cost of installation was ?10,500, but > almost immediately, they started to see their bills decrease, and now > the solar panels generate most of the electricity used in the > farmhouse. Farmhouse? For the civilized world, peak electrical demand starts just before sundown and peaks in the middle of the night. You are still an idiot. -- Jim Pennino Remove .spam.sux to reply.
From: habshi on 19 Mar 2010 20:22 Why not combine solar electric and solar thermal? The front panel would have electrons knocked out by energetic photons generating electricity while the rest of the photons would heat a panel of liquid below this which would heat the house. A similar thing could work on solar roofs on cars , where the heat energy would run an air conditioning system. So the total energy extraction would rise from 10% to 80% excerpt You can see Alcoa�s take on a parabolic trough in the image above. The trough design is pretty typical in solar thermal; its advantage is that the curved design focuses a lot of sunlight to one point. What you can�t see are the parts behind the mirror. Alcoa�s money-saving idea is not only to eliminate the glass in mirrors, but also to fabricate the the trough as a single piece � the support structure is built into the mirror. But if the cost reductions are anything on the order of what�s claimed, it will be great news for the solar thermal industry � so much so that cheap mirrors could potentially put solar power on an even footing with traditional sources of energy, like natural gas.
From: habshi on 19 Mar 2010 20:38 At this rate of exponential growth all of Germany's electricity (100,000MW or so) will be solar or wind powered and in ten years all energy. excerpt Germany will add more than 5,000 megawatts of photovoltaic capacity this year -- or nearly double the previous record of 3,000 megawatts that was installed in 2009, a senior German government official said on Thursday. Karin Freier, head of the Environment Ministry's solar energy department, said planned cuts of 16 percent in state subsidies that will take effect in July were fuelling the boom as investors rush to beat the deadline. "This year we'll definitely have 5,000 megawatts or maybe even more," she told a Euroforum conference. Germany is the world's photovoltaics leader with about 9,000 megawatts installed at the end of 2009 and some 58,000 jobs created in the last decade .... This could include 38 London Arrays, almost 10,000 onshore wind turbines, 1,000 miles of wave generation, completion of the Severn Barrage and around 25 million solar panels - as well as nuclear and carbon capture and storage (CCS The government target of installing 25GW of offshore wind by 2020 seemed "remarkably optimistic" to the Academy. It considered a rate of around 1GW capacity installed per year for offshore wind out to 2050 and slightly more than half that for onshore wind a more realistic figure - but still at the limit of what might be plausible in engineering terms. This equates to 24GW of installed capacity for onshore wind and 38GW for offshore wind. ... "They've used every measure you could possibly think of to enhance production of renewable energy equipment in China," said report author Alan Wolff of the trade law firm Dewey & LeBoeuf LLP. China replaced the U.S. as the biggest investor in renewable energy for the first time in five years as the Asian nation raced to meet rising demand for power and reduce carbon emissions. China invested $34.5 billion in wind turbines, solar panels and other low-carbon energy technologies in 2009, Bloomberg New Energy Finance said Wednesday in London. The U.S. spent about half as much last year, or $18.6 billion, slipping to second.
From: jimp on 19 Mar 2010 23:53
In sci.physics habshi(a)anony.net wrote: > Why not combine solar electric and solar thermal? Because of the different temperature requirments for operation. You are still an idiot. -- Jim Pennino Remove .spam.sux to reply. |