From the initial container purchase and land prep in the US to installing solar panels and navigating local permits, every decision has a price tag. . Total project ranges: A small, compact distribution substation can start around $1,000,000 and climb toward $3,000,000 for modest upgrades. Large transmission-level facilities. . The price of an electrical substation depends on several factors. Voltage Level: Higher voltage substations require more robust insulation, larger equipment, and advanced safety features, increasing costs. Add the cost of additional steel (if any) $800 per 1000sqft assuming a 500kCMIL bare copper wire. Here are the main factors driving the price: Rated Power (kVA): Options range from 250kVA to 2500kVA.