NOVELTY - A solid waste digester (100) comprises a single phase reactor vessel horizontally disposable on a horizontal around surface within which solid waste is placed, and comprising upright side wall(s), floor and easily openable entrance (114) comprising brace(s) (128) for distributing force for sealing the easily openable entrance via a water seal (126); cover (116) comprising a liner disposed over the vessel and attached to brace to seal the vessel; sprinkler system for distributing water, bacteria and nutrients over the solid waste; and drainage system for collecting leachate.    USE - A solid waste digester for generating methane that can be used as an energy source such as for production of electricity.    ADVANTAGE - The digester system is cost effective, provides a higher biogas production and shorter digestion period, provides for the use of lower weight components and eliminates the need for a separate gas storage tank, and provides for the use of practically unlimited volume. The dimensions of digester are not limited because the walls can be as long as needed so that there is no limit on the volume that may be constructed. The entrance to reactor vessel makes loading and unloading the solid waste efficient and lower cost.    DETAILED DESCRIPTION - A solid waste digester (100) comprises:    (1) single phase reactor vessel horizontally disposable on a horizontal around surface within which solid waste is placed; and comprising upright side wall(s), floor, and easily openable entrance (114) for loading, reloading and unloading solid waste comprising brace(s) (128) for distributing force for sealing the easily openable entrance via a water seal (126) disposed at easily openable entrance;    (2) cover (116) comprising a liner disposed over the vessel and attached to brace to seal the vessel, where entrance comprises the brace attached to a horizontal upper extension of the cover disposed above the entrance and the water seal attached to a horizontal lower floor extension disposed below the entrance;    (3) sprinkler system disposed over solid waste for distributing water, bacteria and nutrients over the solid waste; and    (4) drainage system disposed at a bottom of vessel for collecting leachate comprising water and bacteria and for sending the leachate through sprinkler system.    DESCRIPTION OF DRAWING(S) - The drawing shows a top perspective view of the digester.    Solid waste digester (100)    Entrance (114)    Cover (116)    Water seal (126)    Brace (128)