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A sustainable source of energy; that’s some project! Did you know that this device has not been invented yet? If you can make one that properly fulfills the electricity needs of a household, forget about your school project, you can make millions of dollars!!Other than putting solar panels on the roof, I don’t think anyone will be able to provide a solution for your assignment, not even the world experts on sustainable energy. There is still a huge controversy among the scientific community as to what sustainable means and as to whether is achievable in theory!What an assignment you got!? The CA state congress and the US Department of Energy both have a similar assignments, by the way.