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A new garage-engineered generator burns the waste oil from restaurants' deep fryers to generate electricity and hot water. Put 80 gallons of grease into the Vegawatt each week, and its creators promise it will generate about 5 kilowatts of power.
That's about 10 percent of the total energy needs of Finz, a seafood restaurant in Dedham, Massachusetts, where the first Vegawatt is being tested. At New England electricity rates, the system offsets about $2.50 worth of electricity with each gallon of waste oil poured into it.
Vegawatt's founder and inventor, James Peret, estimates that restaurants purchasing the $22,000 machine will save about $1,000 per month in electricity costs, for a payback time of two years.
From Wired.
Would you like power with those fries?

For five happy years they enjoyed simple lives in their straw and mud huts.
Generating their own power and growing their own food, they strived for self-sufficiency and thrived in homes that looked more suited to the hobbits from The Lord of the Rings.
Then a survey plane chanced upon the 'lost tribe'... and they were plunged into a decade-long battle with officialdom.
Yesterday that fight, backed by more modern support for green issues, ended in victory.
The eco-community in the Preseli mountains of west Wales was set up in 1993 and lived contentedly away from the rat race round a 180-acre farm bought by Julian and Emma Orbach.
In 1998, it was spotted when sunlight was seen glinting off a solar panel on the main building, which was built from straw bales, timber and recycled glass.
When the pilot reported back, officials were unable to find any records, let alone planning permission, for the mystery hillside village surrounded by trees and bushes.
Read on from the
Daily Mail.