This thesis describes the purpose of lighting control and system components needed for lighting control. Finally, the paper describes the standard EN 15193, which provides instructions for setting national limits for the energy needed to power the lighting and predicts advice for separate measurement of the electrical energy used for lighting. The above norm among other things, provides basics of calculations of energy consumed on lighting, new trends, and recommendations in the design. At the end of the thesis, lighting calculations were performed and values of numerical indicators lighting LENI were compared by rapid and complex method where it's evident that the complex method is more demanding, and thus more accurate than fast calculation method.