It's also worth noting that the authors, Dr. Ethan Siegel and Dr. Peter Thieberger have really solid credentials. No doubt the fanbois will declare that they are just "deniers" and therefore should be ignored.
The electrical schematic in the article was intriguing. The fact that Rossi left the genset running during the experiment was incredibly damning, in my mind. This article may explain why Rossi did that.