Abstract: The invention results in an increased efficiency factor at electric energy generation. To achieve the mentioned technical result an electric energy generating device has a heat energy source, means for bringing heat energy from the source to an energy converter, heat-to-electric energy converter, and means of supplying the obtained electric energy to the mains. The heat-to-electric energy converter has at least, one converging module, including an irradiator with thermal luminescent coating, IR photo-cell, and concentrator that faces the irradiator with thermal luminescent coating and concentrates IR radiation directly onto the IR photo-cell, which is connected with the means for supplying the obtained electric energy to the mains. The device also differs in that each converting module is covered with heat insulation material from the outside, and also in that the means for supplying the obtained electric energy to the mains is made as an inverter.