Assuming the potential of energy saving in sugar milling and
ethanol conversion, it is found that 10% reduction in energy
consumption helps to increase 33.5% inNEV. The values ofNREVand
energy yield ratio remain constant since there are no fossil fuel
inputs in the production processes inside the factory. An improvement
of 30% in the efficiency of the plant will result in a break-even
point for NEV, that is, a point where the energy input in the system
and the output in terms of energy content in the ethanol is equal.