TECHNOLOGY FOCUS - BIOLOGY - Preferred Components: The biomass is selected from wood and switch grass.    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The additive that renders the feed stock inert is calcium hydroxide.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The feed stock further comprises moisture content of less than or equal to 30 (preferably 5-30, especially 10-20, particularly 15%). The feed stock has a high heating value (HHV) of 3000-15000 (preferably 5000-10000, especially 7000-9500, particularly 13000-15000 British Thermal Unit (BTU)/lb). The feed stock has a volatile matter content of 40-80 (preferably 60-70%) or 80-95%; carbon content of 40-50, 60-70, or 70-80 (preferably 75%); hydrogen content of 5-7 (preferably 5-6%) or 6-9%; ash content of less than or equal to 7 (preferably less than or equal to 5%); and sulfur content of less than or equal to 2 (preferably less than or equal to 0.5, especially less than or equal to 0.2%). The engineered fuel feed stock has a hydrogen/carbon (H/C) ratio of 0.09-0.14, 0.11-0.15, or 0.05-0.1; and oxygen/carbon (O/C) ratio of 0.3-0.6, 0.6-0.9, 0.01-0.05, or 0.15-0.3. The engineered fuel feed stock upon gasification at 850 degrees C and an air equivalence ratio (ER) of 0.34 produces synthesis gas comprising (vol.%): hydrogen 6-30 (preferably 15-20, especially 16-24, particularly 25-30); carbon monoxide 14-30 (preferably 20-30, especially 12-17, particularly 15-20); methane 0.3-6.5 (preferably 0.5-3, especially 2-5, particularly 4-6); carbon dioxide 6-13 (preferably 5-8, especially 5-10); and nitrogen 44-68 (preferably 42-48). The synthesis gas has a hydrogen (H2)/carbon monoxide (CO) ratio of 0.3-2.0 (preferably 0.5-1.5, especially 0.8-1.2, particularly 1); and HHV of 140-180, 160-200, or 180-220. The fuel feed stock is in a loose, non-densified or densified form. The densified form is a cube or pellet. The fuel feed stock further comprises at least one fuel component that enhances the gasification of the fuel feed stock, where the enhancement is a reduction in the amount of sulfur emissions produced, reduction of chlorine emissions produced, or reduction of heavy metal emissions produced. The engineered fuel feed stock is rendered inert. The feed stock further comprises at least one additive that renders the feed stock inert. The densified form of the engineered fuel feed stock has a diameter of 0.25-1.5 inches; length of 0.5-6 inches; surface to volume ratio of 3:1 to 20:1; bulk density of 10-75 lb/ft3; porosity of 0.2-0.6; aspect ratio of 1-10; thermal conductivity of 0.023-0.578 BTU/(ft.hr. degrees F); specific heat capacity of 4.78x 10-5 to 4.78x 10-4 BTU/(lb. degrees F); and thermal diffusivity of 1.08x l0-5 to 2.16x 10-5 ft2/s. EXAMPLE - No suitable example given.