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At December 1989, ENEL charged CESI with a research project to be finished in three years: the Energy storage for a stationary and vehicular use. The topic was the application of the electrical battery not only on traditional power plants but especially on non traditional ones, like photovoltaic and wind power. The project faced off the development and industrialization of pioneering batteries and, at the same time, wanted to realized prototypes of electric vehicles with a highest degree of innovation.