Interconnection Study Calculator

Estimate grid interconnection requirements and costs for solar PV systems based on size and utility requirements.

Input Parameters

Results

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Study Level
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Estimated Study Cost
$
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Max Export Capacity
kW
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Upgrade Risk
Note: FERC Small Generator Interconnection Procedures (SGIP) define study levels. Fast track applies to most residential systems. Commercial systems over 25 kW require engineering studies.

Reference

Export Capacity = System Size - Existing Load Study Level based on system size and export: <25 kW: Level 1 (Fast Track) <2 MW, export<50%: Level 2 (Supplemental) <5 MW: Level 3 (System Impact) >5 MW: Level 4 (Facilities Study) Costs scale with system size and study level