Hydrogen Generation Market Size, Share & Trends Analysis Report by Technology (Coal Gasification, Steam Methane Reforming, Partial Oxidation (POX), Electrolysis), by Application (Methanol Production, Ammonia Production, Petroleum Refinery, Transportation), by Type (Blue Hydrogen, Gray Hydrogen, Green Hydrogen), by System Type (Merchant, Captive), by Source (Natural Gas, Coal, Biomass, Water), by Region (North America, Europe, Asia Pacific, Latin America) - Global Industry Assessment (2016 - 2021) & Forecast (2022 - 2028)