Fuel cells convert hydrogen, natural gas or other fuel into electricity through an electrochemical process.
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Thin film technology refers to the use of non-silicon materials to convert sunlight into electricity.
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Entrepreneurs are brimming with schemes to turn rubbish into electricity or fuel or fertiliser.
Two trials have produced cells that could convert 17% of the sunlight they absorb into electricity.
An internal combustion generator converts the gas back into electricity to provide power for the home.
"When you turn the biogas into electricity, it creates heat which we also store, " says Forster.
For those who slept through their high-school physics classes, batteries work by converting chemical energy into electricity.
Thermoelectric materials convert low-grade heat wasted in industrial processes or exhaust systems of a vehicle into electricity.
Upon arriving at a new chip, the light is then transformed into electricity again to be processed.
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Invented in 1839 by William Grove, fuel cells promise to convert chemicals into electricity cheaply and efficiently.
On April 9th Toyota, Japan's largest car marker, announced that it plans to go into electricity generation.
Instead of speeding atomic nuclei up, it slows them down, and turns the energy released into electricity.
To turn that heat into electricity, it is directed towards the solar cell by the photonic crystal.
For a power plant, that includes its location and the efficiency with which it transforms gas into electricity.
It then digests the flies, before their exoskeletons are turned into electricity, which enables the robot to function.
The three main types of thin film technologies use cadmium-telluride, copper-indium-gallium-selenide and amorphous-silicon to convert sunlight into electricity.
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The result, according to Dr Bermel's calculations, would be a system that converts 37% of sunlight into electricity.
In electric trains, the braking energy is converted into electricity and fed back into the overhead power supply.
These methods convert ambient energy in the forms of light, vibration, heat, radio waves and so forth into electricity.
Developer FCC Environment proposed building a facility to turn vegetation into electricity on land at Sutton Courtenay landfill site.
The anaerobic digester would have used 10, 000 tonnes of locally-grown maize to produce methane gas to convert into electricity.
The upshot was a device that converts 4.6% of incident sunlight into electricity.
That means a smaller area of cell can be used to convert a given amount of light into electricity.
The heat of the sun certainly feels powerful, and we all know that sunlight can be converted into electricity.
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These are capable of converting sunlight into electricity with an efficiency of 22%.
These flexible, lightweight materials can be used as tents and similar structures that provide shelter and convert sunlight into electricity.
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Some of the latest solar cells, for instance, can covert sunlight into electricity with an efficiency of more than 40%.
In conventional electricity generation, roughly one third or so of the energy potential contained in the fuel is converted into electricity.
Another idea, already being tried out at Camp Victory, the main American base in Baghdad, is to convert rubbish into electricity.
Those panels can also fill in more roof area, which makes them more efficient in converting sunlight into electricity, company officials say.
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