⚡ 34.5kV to 115kV/230kV GSU Transformers (25-150 MVA), Switchyard & Interconnect

Utility Solar Substation Transformer Calculator

Size utility interconnection high-voltage substations for solar farms: calculate Generator Step-Up (GSU) power transformer rating (MVA based on solar inverter peak AC export at 0.95 power factor), 34.5kV medium voltage collection circuits, high-voltage gas-insulated switchgear (GIS/AIS), and substation EPC bids.

1. Project & Operating Inputs

Solar Farm AC Inverter Export (Megawatts AC e.g. 60 MW AC)

Interconnection Voltage (kV e.g. 115 kV Utility Interconnect)

Customer Bid Price for Turnkey Substation ($ e.g. $4.8M)

GSU Transformer, Circuit Breakers, Relay Panel, Civil & Rigging ($)

2. Financial Breakdown & Yield

HIGH-VOLTAGE SOLAR GSU SUBSTATION

Turnkey Substation EPC Profit

High Voltage Contractor Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Material Cost