Aster undertakes design to commissioning of Sub-stations of ratings from 33 kV  to 220 kV. Scope broadly covers Soil investigation, Structural foundations and Supply/Erections of Equipment, Earth mats, Cable duct runs, control rooms, Approach Roads, Culverts, Switch yards, Fencing, Terminal Bays, fencing etc., Installation and testing of Power Transformers, Breakers, Isolators, CT/PT, Lighting Arrestors, Control and Relay panels, Battery bank, Yard Lights and Air conditioning of control room etc. Substations constructed by Aster team are already in use at KPTCL for over two years.