Enphase Energy Inc. Micro-Inverter Data

Enphase Energy Inc. provided NREL micro-inverter data for PV systems located in Denver, Phoenix, Minneapolis, Seattle, and New Orleans. Data were provided as zipped CSV files with one file per PV system ID and include sequential data for all the micro-inverters included in a PV system. Naming convention for the files includes the PV system ID. The first row of data in a file is a header, and the remaining rows of data are the data values of the elements corresponding to their header description, and at 5-minute intervals.

For Phoenix and Denver, the order of the data columns is: Serial Number, Time Stamp (iso8601), Energy (J), AC Voltage (V), AC Frequency (Hz), DC Voltage (V), DC Current (Amps), and Inverter Temperature (C). 

For Minneapolis, Seattle, and New Orleans, the order of the data columns is: Serial Number, Time Stamp (iso8601), Energy (J), AC Voltage (V), AC Frequency (Hz), DC Voltage (V), DC Current (Amps), Inverter Temperature (C), and Duration (seconds). These files include a duration field which is the elapsed time of the Energy measurement. The times are UTC, whereas the Phoenix and Denver files include a time zone value in the time stamp.

Meta data pertaining to the files is included in the respective “City”_Info.csv files, with the following columns of data: Enphase Site ID, Latitude, Longitude, Inverter Count, Inverter Family, PV Module Manufacturer, PV Module Model, and First Data Collection.