Global Diesel Genset Market Assessment, By Power Rating [Less than 75 kVA, 75-350 kVA, 350-750 kVA, More Than 750 kVA], By Portability [Stationary, Portable], By Application [Continuous Load, Peak Load, Stand by Load], By End-user [Residential, Commercial, Industrial], By Region, Opportunities and Forecast, 2016-2030F