MIT Researchers Find a Way To Make Solar Panels from Grass Clippings

What if generating solar energy at home required little more than mixing some grass clippings with inexpensive chemicals? That’s exactly what MIT researcher Andreas Mershinhas found to be the case. The scientist says creating a solar cell could be as easy as mixing any green organic material (grass clippings, agricultural waste) with a bag of custom chemicals and painting the mixture on a roof. Once the efficiency of Mershin’s system is improved, this type of solar technology could make cheap energy available in rural places and developing countries where people don’t have access to affordable energy. Read on to see a video of Mershin’s findings

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Army and Air Force Push Solar Power into Quantum Territory

The Department of Defense has been on a roll with new solar energy installations, but the real action is going on behind the scenes in laboratories where DoD is quietly supporting research into low cost, lightweight solar cells enhanced with quantum dots. In the latest project, researchers from the Army Research Laboratory and the Air Force Office of Scientific Research have teamed up with the University of Buffalo to create a quantum-enhanced technology that could boost existing solar cell efficiency by up to 45 percent, and possibly more.

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There are many new technologies

There are many new technologies being developed to create cheaper, more efficient solar panels – however researchers at the National Renewable Energy Laboratory just announced that they have found a way to create more efficient photovoltaic cells using 50% less energy. The technique hinges upon a new optical furnace that uses intense light instead of a conventional furnace to heat silicon to make solar cells. The new furnace utilizes “highly reflective and heat-resistant ceramics to ensure that the light is absorbed only by a silicon wafer, not by the walls inside the furnace.”

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A team of researchers from the University of Notre Dame in Indiana is reporting the creation of a “solar paint” that could mark an important milestone on the road to widespread implementation of renewable energy technology. Although the new material is still a long way off the conversion efficiencies of commercial silicon solar cells, the researchers say it is cheap to make and can be produced in large quantities.

In an effort to find an alternative to silicon-based solar cells, the Notre Dame researchers turned to quantum dot materials. They started with nanoparticles of titanium dioxide (TiO2) and coated them with either cadmium sulfide or cadmium selenide – both compounds that can absorb photons. A photon of the right energy hitting the cadmium compounds causes an electron to escape, which is absorbed by the TiO2.

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China’s Solar Energy Plans Become Even More Ambitious

The People’s Republic of China has increased its target for installed solar power by 50%. It now aims to have 15GW of installed solar generating capacity, by 2015, Reuters reports.

The move comes just months after China doubled its solar goal from 5 GW to 10 GW earlier this year, following the partial meltdown of the Fukishama nuclear plant in Japan.

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A German and Chinese partnership dedicated to sustainable building and renewable energy broke ground this week on a new eco-park in Qingdao. Located off the coast of the Yellow Sea, the eco-park will be a new city quarter for living and working that will be powered largely by renewable energy. The region is known for a higher than average solar resource and the community will aim to use as much solar energy as possible. Germany-based gmp Architekten is responsible for the master plan, which is supported by the German Society for Sustainable Building (DGNB) and Transsolar Consultants.
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Why aren't we investing more on improving energy storage technology

I don’t understand why researchers are not trying harder to crack better energy storage solutions. Instead, all the focus seems to be on finding new clean sources of energy. That’s important, of course, but if we could vastly improve energy storage we could presumably make do with the energy sources we already have? And intermittent renewables such as wind and solar would be so much more attractive.

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BrightSource Energy is a leading solar thermal energy company. In California, it’s in the process of planning and building some of the largest solar thermal power plants in the world. (For more on its technology, see the last paragraph of this post. For more background, check out our BrightSource Energy page.)

Yesterday, the company announced that it is adding “its SolarPLUS thermal energy storage capability to three of its power purchase agreements with Southern California Edison (SCE).” It now has two solar thermal power plants scheduled to be finished and delivering energy in 2015, and three, with storage, scheduled to deliver electricity in 2016 and 2017. (And, BrightSource — with partners NRG Energy, Google, and Bechtel — are building a 126-megawatt plant for Southern California Edison at the Ivanpah solar project in southeast California).

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As we know it

One of the biggest concern for everyone today is to recharge the many small gadgets that have become an irreplaceable part of life. While these gadgets ensure connectivity with the larger world and allow you to go to places without worrying for any job undone or on an expedition, they also consume a lot of electricity for recharging. This becomes a constraint, especially when you are planning for a long vacation at some unexplored locations. As such location may not have regular electricity supply and you may get actually cut-off from the world during your journey. However, a few researchers have developed portable devices that you can carry along with you. They mostly depend on the renewable solar energy for recharging your gadgets. Also, they allow you to stop using conventional batteries that often contain harmful chemicals which get mixed with the soil and water when thrown after use.

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