Meralco Industrial Engineering Services Corporation (MIESCOR)

MIESCOR is a Philippine‐based engineering and construction company, incorporated in December 1973 as a wholly owned subsidiary of Manila Electric Company (Meralco), the country’s largest electricity distribution utility. Created from Meralco’s Plant & Engineering Division, the company has evolved into a full‐service provider across multiple sectors, including power transmission and distribution, telecommunications infrastructure, industrial plants, and general construction. With over 7,000 to 10,000 personnel (including engineers, project managers, skilled workers) and accredited with the highest license class “AAAA” by the Philippine Contractor Accreditation Board (PCAB) for general engineering, building and specialty electrical/mechanical work, MIESCOR positions itself as a premier player in the market. Its capabilities span engineering, procurement, construction (EPC), operations & maintenance (O&M), distribution utility services, telecommunications services and trading of electrical equipment.

The company has secured internationally recognised certifications including ISO 9001:2015 (quality management), ISO 14001:2015 (environmental management) and ISO 45001:2018 (occupational health and safety), reinforcing its commitment to industry standards, safety and sustainability. In recent years, MIESCOR has broadened its reach into telecommunications tower infrastructure via its subsidiary Miescor Infrastructure Development Corporation (MIDC), and has served clients across the power, telecoms and utilities sectors both domestically and in selected international markets.