Generator Market By Type (Standby Generators, Prime Generators, Continuous Operating Power, and Portable Generators), By Fuel Types (Diesel, Gas, and Others), By Power Ratings (Below 75 kVA, 75-375 kVA, 375-750 kVA, and Above 750 kVA), By Industry Analysis, Size, Share, Growth, Trends, and Forecasts 2025-2032