Abstract: A hot water and electricity generator including a casing having a water inlet provided with a float ball valve, an engine arranged within the casing and having an exhaust pipe, a power generator drivingly connected with the engine, a pump drivingly connected with the power generator, a water reservoir disposed above the power generator within the casing and provided with a heat exchanging pipe, a first electric heater electrically connected to the power generator and installed within the water reservoir, an outlet pipe having an end connected with another end of the heat exchanging pipe and another end extending out of the casing, a steam chamber mounted on the water reservoir, and a second electric heater electrically connected to the power generator and installed with the steam chamber, whereby hot water and electricity will be generated as desired.