Satellite data chart

Last modified: 26 Sep 2025

Chart

View the chart at SYSTEM LEVEL under Evaluation.

In the example, the red line displays the substitute irradiance that is taken into consideration. As long as sensor data is available for POA irradiance (yellow line), the substitute irradiance equals that. As of 12:00 pm the sensor fails, and irradiance data is not available until 03:00 pm. For this period, satellite data (orange line) fills in the gap.

Example of the satellite data chart in Day view — Example of the satellite data chart in **Day** view

Basic info

Description

The Satellite data chart compares POA irradiance/irradiation data (on module plane) from your sensors with satellite data, allowing you to detect defects or irregularities.

Satellite-based data: Converted from global horizontal irradiance (GHI) to plane of array irradiance (POAI) according to the subsystem settings, such as inclination, orientation, and power to ensure maximum accuracy. Hourly values are provided once daily. This is usually around 1 AM the following day, depending on your system's time zone.
Sensor-based data: Data from on-site irradiance sensors. Term G_M0 is used.
Substitute irradiance: New value based on sensor and satellite data. If a sensor fails, satellite data automatically fills in the gaps.

Prerequisites

Service level PREMIUM PARTNER
Term G_M0 is defined, see Terms.

Note

Find further information on the general functions within charts under Evaluations & charts.