Hello, I had a thought about the self sustained Mode:
If the power was not continuously monitored, then Rossi could have a remote switch in his pocket or elsewhere. The italian grid and the plug can supply 16 Amps @230V. This are 3.68 kW. If he activates the switch always when nobody is looking to the powermeter and if this makes 50% of time then this makes 1.84 kW and together with errors in temperature measurement this could make up the energy observed. Peter