E-Gas technology converts coal and petroleum coke into a clean synthesis gas containing hydrogen through gasification. The process removes over 95% of mercury in coal and recovers nearly all sulfur, produces no ash, and turns byproducts into useful products. It is an economic, environmentally friendly, and competitive alternative to base-load power. E-Gas technology has a unique two-stage design, allows for continuous slag removal, is fuel flexible, enables economical heat recovery, and uses dry solids-gas separation. It can be applied to substitute natural gas production, power generation with gasification, coal-to-chemicals, and transportation fuels production while minimizing environmental impact.