MIESCOR Builders is a wholly-owned subsidiary of Meralco Industrial Engineering Services Corporation (MIESCOR), established in 1995.

It holds the highest contractor license category AAA with main specialty in electrical works and expertise in general engineering and building, civil and mechanical works.

Miescor Builders is now the biggest contractor of MERALCO, serving its whole franchise area

As Meralco’s technical and back-end support arm, it is responsible for mostly Meralco’s electric transmission and distribution system

It also does installation and maintenance jobs for fiber optic and telecommunication networks, exchange centers and other telecommunication facilities of affiliated companies