– Maintenance, repairs and operation of dispatching and telecommunication infrastructures

– Maintenance, repairs and operation of post automation and DCS systems

– Maintenance and repairs of telemetry and telecommunications systems of high pressure stations and power plants

– Maintenance and repair of telecommunication systems of passive and active fiber optic networks (PTN, DWDM, MUX, SDH)

– Maintenance and repairs of PLC and tele-protection telecommunication systems

– Maintenance and repairs of telephone, radio, wireless and microwave telecommunication systems

– Maintenance and repairs of measurement equipment, PLC and RTU remote terminals

– Maintenance and repairs of protection and relay systems of high pressure substations

– Maintenance and repair of power supply systems (including UPS, battery system and AC/DC chargers, diesel generators), high pressure substations and power plants