Yes, that model can supply up to 150W. I assume Rossi is using a voltage converter to supply a typical 2-5kV plasma voltage and that 150W supply would just suffice. The fact is we really know nothing about the supply, although Rossi's request to Fulvio for a very high voltage converter supports the idea high voltage is involved.
If Rossi really has made a fundamental schoolboy error it would lead him to think that just increasing the voltage would increase the COP, thus the request to Fulvio for an unrealistic megavolt source could in his mind power an entire city.
I still can't figure Rossi out, at first I thought he was a con man, then later as someone with the goods but a bit crazy, but now I wonder if he really is just deluded.