HESCO succeeded to achieve certificate in field of electrical power from vice president of strategic planning and management and also awarded  ISO 9001, ISO 14001, OHSAS 18001, ISO 10002 certificate by CBS, furthermore this company renders the best qualified services to its clients by taking advantage of its switchgear and steel structure factories.

HESCO offers its clients a comprehensive line of project services from planning to engineering, procurement, construction and commissioning under a system of total responsibility in field of power plant, airport, oil & gas, petrochemical, substation, etc.

Some of its EPC projects include:

- Shiraz Subway Urban
- Eastern Taxiway & Heliport Lighting of Persian Gulf International Airport
- Kermanshah Pump Station
- 20KV Transmission Line of Asaluyeh Airport