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Solar Power

Plug-In Solar Appliance Brings Cheap Solar Power to Homes

solar-appliance
Solar power company Clarian Technologies has developed a new concept in residential solar power:  the solar appliance.  Just like a refrigerator or microwave, a homeowner can buy the Sunfish solar power system, plug it into any outdoor outlet and start feeding solar power into their home.

Whereas most solar power systems require a contractor to install the module and an electrician to connect it to the electric panel through an inverter (to convert the DC power generated to AC power), Clarian says a handy homeowner can install the Sunfish themselves in about an hour.

The other major bonus of such a plug-and-play-type system, is the cost.  Let's face it, that's the main draw.  The base model Sunfish will cost $799 with the largest running about $4,000, where a typical roof-mounted system costs a minimum of $10,000 and goes steeply up from there.

Of course, you get what you pay for.  With the largest Sunfish, a homeowner could expect to generate about 150 kWh per month, compared to the 920 kWh of electricity that a typical homeowner uses per month.  But for $4,000, that's still a nice dent in your energy usage and, consequently, your energy bill.  What's best about this appliance is that it could make residential solar power accessible to a much wider range of homeowners.

The Sunfish will be Wi-Fi enabled so that homeowners can use energy management software like Google's PowerMeter to monitor their energy production and use.  The Sunfish should be on the market by the middle of 2011 and will likely be sold through big retailers like Lowe's and Costco.

via NY Times

 

Sticker-Like Lens Improves Solar Panel Efficiency by 12.5%

soloptics
SolOptics, the solar division of Genie Lens, has created a new lens design that improves solar PV performance by 12.5 percent.  The new thin-film design can be applied to any PV module, just like a sticker.

The new design is created by the company's ray tracing software that embosses microstructures onto thin polymer film.  That film can then be applied to solar panels much like tinting film can be applied to a window.  In testing, the microstructures in the lens improved PV efficiency by 10 to 12.5 percent.

The microstructures in the lens provide greater light absorption, an anti-reflective coating that allows more light capture, even if the light is off-center or off-angle, and lengthen the path of light so that more electrons are stimulated and therefore more electricity generated.

Another great feature is that the lens can be applied to PV modules, regardless of what they're made of -- silicon, CIGS or cadmium telluride -- and to newly-manufactured or already existing units.

via Greentech Media

 

New York State Drafts Major Solar Thermal Plan

ny-solar-thermal
New York has big plans for solar thermal heating.  A new program paves the way for the installation of one million systems by 2020, amounting to a 2 GW capacity.

In New York, where winters get mighty frosty, 60 percent of energy consumed in buildings goes to heating and hot water, so this new plan could have a major impact.  The state could see annual savings of 6 million gallons of oil, 9.5 million cubic feet of natural gas and 320 GWh of electricity.  The financial savings would amount to $175 million each year.

These systems would be spread among residential and commercial buildings throughout the state, making hot water and creating steam for heating systems, with residential buildings making up a much larger chunk at 70 percent of the systems installed.

The plan, which was drafted by the state's Solar Thermal Consortium, includes incentives for installing the technology, education and training for installers, research and development for better technology and improvements in the permitting process.  It sounds amazing; let's hope the state government implements it.

via Renewable Energy World

 

 

 

Solar Plane Tackles Two-Week Flight

zephyr
We've been keeping you up to date on the Solar Impulse, a manned solar-powered plane that just completed its first 24-hour flight.  It was a great milestone for solar-powered air travel, but an unmanned solar-powered plane is attempting an even greater feat.

The Zephyr solar aircraft is not only breaking records for solar-powered aviation, it's breaking them for all unmanned flights.  The aircraft has already spent seven days in the air, twice the duration of the longest recorded unmanned flight, and it's aiming for a total of 14 days.

The craft has been flying above the Army's Yuma Proving Ground in Arizona, which is fitting because the potential applications for this type of solar-powered craft include military surveillance (as well as scientific roles like ecosystem observation).

The Zephyr is a super-lightweight, carbon-fiber craft, weighing only 50 kilograms, with a giant wingspan of 22.5 meters.  The wings are covered in thin-film solar panels that charge its lithium-sulphur batteries, which power the engines when the sun goes down.

via Treehugger

 

Solar-Powered Spacecraft Speeding Through Space

ikaros-2
The IKAROS solar-powered spacecraft launched by the Japanese space agency JAXA is officially propelling through space using only solar energy.

After a successful launch on May 21, the craft's 3,000-square-foot sail unfurled without incident and today it was confirmed that IKAROS was harnessing the sun's rays and speeding through space.  The team of scientists back on the ground will control the craft's velocity by changing the angle of the sail, which will maximize or minimize the amount of radiation hitting the solar cells.

The team measured the thrust from the solar light pressure at 1.12 mili-Newton, which is what they expected.  You can check out JAXA's press release here for charts of the craft's acceleration and more details.

The IKAROS is the first fully solar-powered space craft to attempt to reach deep space.

via Inhabitat

 

 
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