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Calcimator

Grid Interconnection Cost Calculator

Estimate the cost of interconnecting a generation project to the grid.

Inputs

MW
miles
$
$/mile

Results

Total Interconnection Cost

$4,770,000

Cost per MW

$95,400

Transmission Line$2,500,000
Transformer Cost$1,250,000
Switchgear & Protection$750,000
How to Use This Calculator
  1. Enter Project Size, Distance to Substation, and Interconnection Voltage.
  2. Set 34.5 kV, 69 kV, and 138 kV.
  3. Adjust 230 kV, Study & Engineering Cost as needed.
  4. Review Total Interconnection Cost ($) and Cost per MW ($).
  5. Use Transmission Line ($) and Transformer Cost ($) to inform your decision.
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