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PVWatts

NREL's PVWatts® API estimates the energy production of grid-connected photovoltaic (PV) energy systems based on a few simple inputs.

PVWatts V6 (GET /api/pvwatts/v6)

Version 6 is the current version of the PVWatts API, and is the version used by NREL's online version of PVWatts. Updates from Version 5 include using the latest NREL National Solar Radiation Database (NSRDB) and minor changes to default values.


Deprecated

PVWatts V4 (GET /api/pvwatts/v4)

Version 4 has been replaced by version 6, and is scheduled to be shut down at the end of July 2018.

PVWatts V5 (GET /api/pvwatts/v5)

Version 5 has been replaced by version 6, and is scheduled to be shut down at the end of December 2018.

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