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Source: video.msn.com --- 33 minutes ago
May 16: A Solar powered bra was developed in Tokyo, Japan. It charges when the bra is worn without other clothing, but if worn in the rain could result in an electrocution. ... Source: www.nytimes.com --- 15 minutes ago
Thanks to its aggressive push into renewable energies, cloud-wreathed Germany has become an unlikely leader in the race to harness the sun’s energy. ... Source: www.nytimes.com --- 1 day ago
Thanks to its aggressive push into renewable energies, cloud-wreathed Germany has become an unlikely leader in the race to harness the sun’s energy. ... Source: www.technologyowl.com.com --- 1 day ago
This is one of the coolest future products I have heard about in a while: A spray-on OLED display that is self-powered through Solar energy. Japanese Mitsubishi Chemicals and Sumitomo Chemical work on spreadable electronics. The molecular soup would h... ... Source: networks.feedburner.com --- 1 day ago
San Francisco Mayor Newsom’s Solar Incentive Program (which we’ve covered here, here and here) is on the skids again this week following a budget committee meeting. The original legislation, which is entirely separate from the newly announced 5 MW installations, proposed using $3 million for a pilot program whereby San Franciscans could receive rebates up [...] ... Source: smallbusiness.theage.com.au --- 1 day ago
The Solar industry is bracing for massive losses, after rebates became harder to claim. ... Source: news.zdnet.co.uk --- 48 minutes ago
The company's tech increases the power of the sun's rays by a factor of 10, using liquid metal to transfer the resulting heat from Solar cells ... Source: blogs.business2.com --- 3 hours ago
For longtime Australian Greenpeace activist Danny Kennedy, one of the environmental group’s more memorable moves was when the Sydney crew climbed the roof of the prime minister’s home and installed Solar panels to protest the government’s preference for Big Coal over renewable energy. (Note: Do not try this on the White House.) These days, there’s a new, greener PM in power and Kennedy is in California, running a Solar startup that aims to minimize the time spent on rooftops by doing for the Solar business what Dell did for personal computers: Digitizing the entire enterprise to cut costs and create a mass market. Putting photovoltaic panels on residential rooftops remains largely a labor-intensive cottage business, often involving multiple visits to a client’s home to make the sales pitch, measure the roof, and design a custom system. Sungevity , which officially launches Tuesday on Earth Day, takes all that online. Enter your address on its website, and satellite-imaging software zooms in on your home, and Sungevity’s proprietary algorithm calculates the roof’s dimensions — the pitch and azimuth — selects appropriately sized Solar arrays, and shows what they will look like installed — while computing your return on investment. Once the order is placed, one of five off-the-shelf prepackaged Solar arrays is shipped to the customer’s door, and an installation crew is dispatched. A database tra ... Source: www.technologyreview.com --- 1 day ago
A technology developed by IBM to cool computer chips could be a boon for Solar energy. ... Source: seekingalpha.com --- 23 hours ago
John Ryden submits: All of the Solar cell manufacturers are supply constrained. The entire world produced a total of 3.8 Giga Watts [GW] of Solar cells in 2007. The manufacturing capacity for Solar cells is small compared to the capacity required by government initiatives to increase renewable power production. Europe wants to produce 21% of its power from renewable resources. America and other countries like China are also seeking to expand renewable power initiatives. This creates huge demand. Worldwide electric production (2005) was 18,560,000 GW hours total. By my rough calculations, one year of Solar cell production produces about 0.05% of total world electric production. Complete Story » ... Source: www.swissinfo.ch --- 43 minutes ago
As oil prices rise, electricity produced from the sun's rays is becoming an economically attractive option – also in Switzerland. ... Source: www.idahostatesman.com --- 5 hours ago
If the fundraising effort goes as planned this weekend at the Green Expo, organizers and community agencies will have enough money to build a permanent, Solar-powered stage on the Grove. ... Source: www.sciencenews.org --- 1 hour ago
STEREO spacecraft capture new images revealing the role of tangled magnetic fields in generating the sun’s outbursts ... Source: teleobjetivo.org --- 51 minutes ago
Un carpintero chino ha construido un calentador Solar de agua utilizando botellas de cerveza. El sistema consiste en un bastidor de madera donde se han montado botellas de cerveza que están conectadas entre si, con lo que el agua puede circular a través de ellas como si fueran tuberías. Ma Yanjun, un carpintero de la provincia china [...] ... Source: www.greenbang.com --- 1 hour ago
It was only a matter of time before the big tech firms started to realise that without electricity, there ... ... Source: www.siliconrepublic.com --- 4 hours ago
IBM has announced it has made a research breakthrough in photovoltaics technology that could reduce the cost of harnessing Solar power for electricity. ... Source: www.arrl.org --- 17 minutes ago
We've had another week with no sunspots. Our reporting week for this bulletin runs from Thursday through Wednesday, and this is the fifth bulletin of the year reporting zero sunspots for the week. The rest of the 16 bulletins had at least one day with sunspots in the reporting period. Sunspot numbers for May 8-14 were 0, 0, 0, 0, 0, 0 and 0 with a mean of 0. The 10.7 cm flux was 66.4, 67.3, 67.4, 68, 68, 68.3 and 69 with a mean of 67.8. Estimated planetary A indices were 4, 3, 5, 3, 4, 4 and 3 with a mean of 3.7. Estimated mid-latitude A indices were 3, 3, 4, 3, 3, 3 and 1, with a mean of 2.9. ... Source: www.sustainablebusiness.com --- 4 hours ago
Retailer plans to install Solar systems on top of more than 10% of its stores. ... Source: openpr.com --- 1 day ago
Solar Velocity is proud to announce the formation of SVG Racing. Solar Velocity welcomes the opportunity to expand its marketing expertise to the automotive and racing industries, and looks to use ... read more ...
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Manufacturers of photovoltaic (PV) Solar panels know the panel’s theoretical efficiency, but it’s much more difficult to tell the actual efficiency. For this, Solar companies send their panels to a lab for testing under real weather conditions.
Recently, I visited such a Solar testing lab — the Solar Power Research Lab at Chosun University in Gwangju, South Korea. I was greeted by Mr. Choi Jong-sik, an engineer and a graduate of the department, who took me to see the lab with the most Solar panels.
Out front of this lab, a small field of Solar panels soak up sunlight. The panel’s designs range from flat to arched and even rotating; some are varicolored polycrystalline , others are neatly lined monocrystalline . Rotating panels have tracking devices that follow the sun (pictured here). The panels can rotate 180° and swivel vertically 53°, following the sun’s path across the sky. The array and variety of panels is stunning.
Inside the lab, computers whir busily. Numbers displayed on the screens climb and fall, recording the electrical input from each array of Solar panels.
Theoretical efficiency measures how much of the light hitting the Solar cell can be converted into electricity under standard test conditions (STC). These conditions are very strict:
a constant temperature of 25°C
the equivalent of 1.42 cm of water vapor in the column of sky above the panels
0.34 cm of ozone in the column of atmosphere abov ...