Abstract: A gas producing and handling system is provided comprising a rigid reservoir enclosure containing a continuous and variable supply of gaseous fuels and a suitable engine capable of utilizing the total amount of fuel provided by the gas supply for producing electrical energy. The gas supply comprises an anaerobic digester adapted to receive organic waste and which is in gaseous flow communication with the engine. The engine has a supply regulated throttle responsive to gaseous pressure in the anaerobic digester. Upon the increased production of gas such that the gaseous pressure in the digester increases, the throttle regulator controls the throttle setting of the engine to increase the output of the engine to fully use the gas supplied by the digester, thereby eliminating the need for auxiliary gas storage devices.