Updated: 16-07-2019 - referring to updated files on https://github.com/SteveNew/GrowattRpi
Uploading data from your solar inverter to a site like pvoutput.org can have have the benefit of letting you monitor your power output from anywhere, comparing data with other systems around the world from various other vendors or just simply to keep track.
I have prepared a walk-through on how to use a Raspberry Pi to upload your Growatt inverter data together with weather data to pvoutput.org. More technical skilled people might find this guide too detailed - they are welcome to grab the goodies at the end or ignore the whole thing :-)