History

SEMS records everything it measures on the controller, and the History pages show what the battery earned, when the site drew the most power, or whether one inverter is falling behind.
Energy History
Energy History shows a system's solar, consumption, grid import and export and battery for a week, month or year, together with the cost of import and the revenue from export. Step between periods to compare them.
Device History
Device History shows any archived value of an inverter, battery, meter or charger, such as power, voltage, temperature, charge level or energy counters, and how complete the record is, so communication gaps are easy to spot.
Solar History
Solar History shows the production of each inverter and the whole plant, so you can see whether all inverters keep up.
Taking the data with you
Every history graph has an Export menu with Excel (.xlsx), CSV and XML. The export holds exactly what is on screen, with units in the headers, timestamps in UTC, a description sheet in the Excel file, and gaps left empty rather than shown as zero.
EV charging sessions have their own CSV export on the EV Charger page.