Ramp Rate Control Calculator

Calculate energy storage requirements to smooth solar PV output ramp rates and meet utility interconnection limits.

Input Parameters

Results

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Allowed Ramp
MW/min
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Worst-Case Ramp
MW/min
--
Required Storage Power
MW
--
Required Storage Energy
MWh
Note: Hawaii and Puerto Rico require ramp rate control for utility-scale solar. Typical limits are 10%/min (1 MW/min for 10 MW plant). Battery energy storage or supercapacitors provide ramp rate smoothing.

Reference

Allowed Ramp = PV Capacity x Max Ramp Rate [MW/min] Worst Ramp = PV x Cloud Ramp x 60 [MW/min] Storage Power = max(0, Worst Ramp - Allowed Ramp) Storage Energy = Storage Power x Window / 60 [MWh] Typical ramp limits: 10%/min for large plants