NOVELTY - The apparatus for gasifying carbonaceous feedstock to produce a low-tar high-energy synthesis gas, comprises a gasification reactor (12) having a gasification zone, an annular-shaped space (18) partially surrounding the gasification zone, a combustor (22) for converting chemical energy from exhaust of a secondary energy converter (24) to thermal energy for heating the gasification zone of the reactor, and a high-temperature fuel cell disposed partially within the space surrounding the gasification zone of the reactor.    USE - The apparatus is useful for gasifying carbonaceous feedstock to produce a low-tar high-energy synthesis gas, and for producing high-caloric combustible gases with low-tar content.    ADVANTAGE - The apparatus ensures economical production of very low tar synthesis gas with less nitrogen dilution and higher energy content, minimizes or eliminates the cost of scrubbing and disposing tars of the gasifier, produces a higher-energy gasifiers, reduces bridging within the gasifier and cracks pyrolysis oils, minimizes heat losses, increases the conversion of char, and is simply and economically constructed with low operating costs.    DETAILED DESCRIPTION - The apparatus for gasifying carbonaceous feedstock to produce a low-tar high-energy synthesis gas, comprises a gasification reactor (12) having a gasification zone, an annular-shaped space (18) partially surrounding the gasification zone, a combustor (22) for converting chemical energy from exhaust of a secondary energy converter (24) to thermal energy for heating the gasification zone of the reactor, and a high-temperature fuel cell disposed partially within the space surrounding the gasification zone of the reactor, so that the endothermic heat of reaction of the gasification zone is partially balanced by the exothermic heat of reaction of the fuel cell. The gasification zone is maintained at 800 degrees C by providing heat to the space. The heat provided to the space to maintain the temperature of the gasification zone is obtained from the chemical energy of the synthesis gas produced by the gasification reactor. The fuel cell comprises fuel cell tubes partially disposed in the space surrounding the gasification zone. INDEPENDENT CLAIMS are included for:    (1) a method of gasifying carbonaceous feedstock to produce low-tar, high-energy synthesis gas using a gasification reactor having a gasification zone; and    (2) a method of reducing solid waste.    DESCRIPTION OF DRAWING(S) - The diagram shows a process flow diagram illustrating a gasification system.    Gasification reactor (12)    Annular space (18)    Combustor (22)    Secondary energy converter (26) Pre-heater. (24)