Abstract: A system for generating electricity includes a housing body defining an accommodating space, an oxyhydrogen generating unit, a combustion unit, a turbine unit disposed above the combustion unit, and an electrical generator. The housing body is formed with a top exhaust vent and at least one air entrance both in flow communication with the accommodating space. The air entrance allows air to flow into the accommodating space. The oxyhydrogen generating unit is used for electrolytically converting an electrolyte into oxyhydrogen gas. The combustion unit is operable to burn the oxyhydrogen gas from the oxyhydrogen generating unit for heating air in the accommodating space so as to generate an upward airflow. The turbine unit is to be driven by the upward airflow to rotate. The electrical generator is driven by the turbine unit so as to generate electrical power.