January, 2014Archive for

Self-cleaning Solar Panel Coating Optimizes Energy Collection

Soiling -- the accumulation of dust and sand -- on solar power reflectors and photovoltaic cells is one of the main efficiency drags for solar power plants, capable of reducing reflectivity up to 50 percent in 14 days. Though plants can perform manual cleaning and brushing with deionized water and detergent, this labor-intensive routine significantly raises operating and maintenance costs O&M , which is reflected in the cost of solar energy for consumers.

Solar-powered signs suffer dusty eclipse

Solar-powered signs suffer dusty eclipse ARTI S. SAHULIYAR A blind display board at Kutchery Chowk in Ranchi on Thursday. Picture by Hardeep Singh The Ranchiite who expects things not to work wont be surprised. The solar-powered variable message signs, which Ranchi Municipal Corporation RMC installed at 10 city junctions three years ago, arent working for several months. But why the signs with speed displays, messages like Go and Stop and visuals such as arrows dont work can still surprise ha...

Rumor: Sunrun Joins With REC to Bulk Up in Residential Solar Fray

Sunrun has formally joined with REC's residential solar unit, according to several sources close to the deal. It's a deal that has the potential to change the landscape in a dynamic and fast-growing residential solar market. REC already has an existing relationship with Sunrun. The structure of the deal, whether it is a merger, JV or preparation for an IPO, has not been disclosed. The U.S. residential solar market continues to be a volatile scene, as evidenced by our recent coverage of...

Carbon nanotubes harvest the Sun's energy as heat for better solar

Science is constantly searching for more efficient ways to collect all the free energy the sun is raining down on us, but conventional photovoltaic panels simply aren’t cutting it. Most solar cells are based on silicon, which has proven itself to be versatile and inexpensive. However, it can only absorb part of the spectrum emitted by the sun. Researchers at MIT may have developed a way to collect those other wavelengths without making any drastic changes to the basic design of solar panel...

The solar system was once like a giant chaotic SNOW GLOBE

Our solar system has an unruly past in which giant planets nearly wiped out the asteroid belt and turned it into cosmic snow globe. This is according to researchers in Massachusetts who claim that the solar system was once a riotous place in which Jupiter may have been as close to the sun as Mars is now.As the planet moved through the main asteroid belt, they believe it tossed interplanetary flotsam far and wide. The researchers noted that objects from as close to the sun as Mercury and as far o...

Two Big Reasons Why Solar Power is Under Siege

Forget the U.S. war on coal, thats not going so well for the team in the charcoal jerseys. The real shooting war has opened up against renewable energy, particularly solar, because of its potentially disruptive nature to vested interests. Solar power is the go-to source for new generating capacity in the U.S. Some 930 megawatts of photovoltaic solar power was installed in the third quarter of 2013, a jump of 35 percent over last year, according to the Solar Energy Industries Association. And 201...

Wind is making a comeback in the battle against solar

Wind power has not kept pace with solar and has had bad luck with PR recently remember the eagles? , but construction activity is ramping up, which bodes well for the months ahead, said SNL, a firm specializing in energy company research, on Thursday. Wind installations limped through 2013, their lowest year since 2004, SNL said. Only 612 megawatts of wind capacity were added to the grid last year. Compare that to solar: in the third quarter alone, the solar industry added 930 megawatts of new p...

Solar City Leads Rising Short Interest In Solar Stocks (FSLR, RSOL

The number of shares sold short in leading U.S. solar-related stocks was on the rise as the new year got under way. First Solar NASDAQ: FSLR , Real Goods Solar NASDAQ: RSOL and SolarCity NASDAQ: SCTY saw the largest upswings. Short interest in Advanced Energy Industries, GT Advanced Technologies, SunEdison and SunPower Holdings increased more modestly between the December 31 and January 15 settlement dates. Furthermore, the number of U.S.-listed shares or ADRs sold short of foreign-based com...

Qesco chief assails design of solar plant

QUETTA: Chief of the Quetta Electric Supply Company Qesco Baligh-uz-Zaman has said the project envisaging setting up of 300MW solar energy plant may end up in disaster because its design doesnt have provision for back-up batteries. Talking to Dawn, he said that instead of giving subsidy worth billions in the agriculture sector the authorities should set up a plant for manufacturing solar energy-based tube-wells. Mr Zaman said the 300MW solar energy plant being installed in Quetta had no provis...