Online Monitoring of Solar System

In my system, the DC power from the solar cells is converted to AC by microinverters made by Endphase Energy. We have the M215 model. Part of the Endphase system is a network hub that receives information about the power output from the inverters. The software of the hub runs on my WiFi system and uploads information about the data obtained from the  inverters to Endphase servers, and the servers provide online monitoring of the data. This monitoring gives nice bar graphs, updated every 15 minutes, that show how the solar system is behaving.

On sunny days with no clouds, the bar graph is a nice looking curve. However, sunny days with clouds give a bar graph that has ups and downs on the bars. I can look at the bars and see when clouds reduced the magnitude of the sunlight hitting the cells. The bar graph peaks at about 11 am, rather than at noon, because the sun is low in the winter sky and my street isn't aligned exactly north-south; the solar power increases in the morning at a faster rate than it decreases at night.

    

      

    

     

Click this link to see a demo of the online monitoring.