Generator Sets Market - Global Industry Size, Share, Trends, Opportunity, and Forecast, Segmented By Power Rating (Less than 50 kVA, 50-125 kVA, 125-200 kVA, 200-330 kVA, 330-750 kVA, Above 750 kVA), By Application (Standby, Peak Shaving, Prime/Continuous, Others), By End User (Residential, Commercial, Industrial, Infrastructure), By Fuel (Diesel, Gas, Hybrid), By Region, By Competition, 2018-2028