A comprehensive tool to determine the cost of building a substation or any small portion of it. Input quantity for an estimate. A mid-size station with a 20–40 MVA transformer, modern protection, and concrete yard may run $3,000,000 to $8,000,000. Large transmission-level facilities. . Predefined cost of $3,000 suggested. Modify the above cost accordingly. Here are the main factors driving the price: Rated Power (kVA): Options range from 250kVA to 2500kVA. Voltage Level Substations rated for 33kV cost more due to insulation. . Customers requiring shorter overall delivery times and minimal on-site work have been the main drivers for Hitachi Energy's development of pre-fabricated indoor substations. Smaller distribution substations are subdivided into container-sized modules, which can be manufactured, assembled and tested. .
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