I am a member of the AGL VPP in Melbourne and was just wondering how it works. I have received a text today asking me to take part in a peak event between 4:00pm to 5:00pm to receive a $5 credit for exporting 0.38kWh more to the grid. I replied yes. We then did all the things needed to reduce our consumption as well. 

My question is does AGL Vic take over my Powerwall remotely for the hour? 

If not is there a way that I can force the Powerwall to send power to the grid?

If I select "Go Off Grid" does that still send excess power to the grid?

If anyone has any info on this, please let me know