A substation is a part of an electrical generation, transmission, and distribution system. Substations transform voltage from high to low, or the reverse, or perform any of several other important functions. Between the generating station and consumer, electric power may flow through several substations at different voltage levels. Transfo tech. Engineering designs and builds Electrical Rooms for Transformers, MV/LV switchgears to protect your substation assets, Cable trenches, Control rooms for intelligent monitoring, lattice tower and frame foundations.