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In a move that will bring thin-film solar panels to the U.S. residential market, First Solar has signed a deal to provide installer SolarCity with 100 megawatts' worth of solar arrays over the next five years. First Solar is also investing $25 million into SolarCity, the Silicon Valley startup backed by Tesla Motors founder Elon Musk. This is First Solar's initial foray into the home market - and apparently the first of any thin-film solar module maker. Thin-film solar panels are made by depositing solar cells on sheets of glass or flexible material and use little of the expensive silicon that forms the heart of more bulky conventional solar modules. That makes thin-film panels cheaper, although they are less efficient at converting sunlight into electricity. And thin is in for homeowners who prefer less-obtrusive panels on their roofs.

Is it Possible to Increase Your Vehicle Gas Mileage Today, To Convert Your Car To Run On Water And Save Over 40% Of Fuel Cost Every Month? The real Truth: Water can be used as a supplement to gasoline that will extend your gas millage 40% or more. In fact, using water and gas together can not only increase your vehicle's fuel efficiently it can improve emissions quality, and save you money. Check out the video below to see how you can run your car on water.

You will actually find that there are even energy efficient printers out there, and one of the top ones available is the Canon CanoScan 5600F Flatbed Color Image Scanner, which is both a great printer as well as an excellent scanner.

Warnecke, a researcher at the U.S. Department of Energy's Joint Genome Institute in Walnut Creek, California, has been generating lots of attention lately for his work with termites. The insects are remarkably efficient at turning cellulose into sugar-the first step in making fuel from plants like switchgrass or poplar trees. Scientists can't compete with termites.

With gas prices going through the roof and regulators requiring cars to be ever more miserly, Volkswagen is bringing new meaning to the term "fuel efficiency" with a bullet-shaped microcar that gets a stunning 282 235 mpg. Volkswagen's had its super-thrifty One-Liter Car concept vehicle -- so named because that's how much fuel it needs to go 100 kilometers -- stashed away for six years. The body's made of carbon fiber to minimize weight (the entire car weighs just 660 pounds) and company execs didn't expect the material to become cheap enough to produce the car until 2012.

A team of Chinese scientists has made a chemical breakthrough that efficiently turns the lignin in waste products such as sawdust into the chemical precursors of ethanol and biodiesel.

What aims to be the greenest building in Europe has just been un-earthed and is expected to be complete at the end of next year. And using the snafus of the greenest building of 20 years ago, they may well have all the bases covered regarding efficiency and environmentalism.

One of the most promising technologies available in sustainable energy is solar panels. As the technology matures, so does the efficiency of the panels.

March 3, 2009 Arizona based First Solar has achieved a major milestone in reducing the manufacturing cost for solar panels below the $1 per watt price barrier - the target necessary for solar to compete with coal-burning electricity on the grid or grid-parity. Using cadmium telluride (CdTe) technology in its thin-film photovoltaic cells, First Solar claims to have the lowest manufacturing cost per watt in the industry with the ability to make solar cells at 98 cents per watt, one third of the price of comparable standard silicon panels. The efficiency is in part due to a low cycle time - 2.5 hours from sheet of glass to solar module - about a tenth of the time it takes for silicon equivalents.

Straw bale construction uses straw to build residential and commercial structures that are energy efficient and eco-friendly. It continues to gain adherents because of its use of natural building materials,

An Indoor or Outdoor landscape architect can contribute greatly to the energy efficiency of a building's heating and air conditioning system.

As part of an energy efficiency measure, many homeowners are contacting roofing or skylight installers as a way to utilize natural lighting where a skylight would be beneficial.

When it comes to retrofit designer jobs, it can involve re-designing any type of industrial or commercial systems to save energy and perform more efficiently.

The Fronius IG plus 3.0-1 UNI 3000W GT Inverter is one of the most energy efficient product available.

These wind turbines can produce power 24 hours a day. Maximum energy and efficiency can be extracted from The ARE wind generators.

Have you ever heard of an energy efficiency ratio of 12 EER? This Massive number is the particularity of the new Haier ESAD4066 Split System Air Conditioner.

Whirlpool's WFW8300SW model has an ultra efficient design with a duet sport washer. It uses 60% less water and energy making it the best choice for an economical usage.