Global Fuel Home Generator Market Size, Share & Demand Report By Product Type (Portable Generators, Stationary Generators), By Fuel Type (Gasoline, Diesel, Natural Gas, Propane), By Power Rating (Below 4 kW, 4–8 kW, Above 8 kW), By End-Use (Residential, Small Commercial, Remote & Off-Grid Establishments), By Region & Segment Forecasts, 2025–2030