EOM is the design of power supply, lighting, and lightning protection. The power supply is divided into different categories of reliability. Electricity supply is not only an outlet network, it is the supply of all electrical appliances and installations with power, it is lighting. Depending on the electrical capacities of electrical installations, cable cross-sections are calculated and a linear power supply scheme is developed. The linear scheme also includes lighting. Lightning protection is the development of a lightning conductor and grounding circuit. EOM is associated with heating, ventilation, air conditioning, smoke extraction, water supply, sewerage. The designers of the adjacent sections give the task to take into account the capacities and placement of electrical installations in the building. Also, all electrical equipment is included in the grounding circuit. Semidion Brigade has extensive experience in designing power supply, lighting, and lightning protection for buildings and has more than 5 years of experience. We will design buildings for any purpose, there are no restrictions. A professional expert in the field of EOM design will perform tasks of any complexity.