45 gallons of fuel over a thirty day period or 1500kwh of low quality heat. at best you may be able to get 30% efficiency more likely 20%. So in the end you get 350kwh at a rate of a little over 500W. Seems like solar cells would be more cost effective and you can save the nickel, Li and H for other fun things.
How much does this gizmo cost?
No one (except maybe Rossi and his colleagues) knows whether this can be economically competitive at scale -- but that was true when Edison finally got his light bulb working reliably.
With the "dummy reactor", the reactor with electrical current running through it but no fuel (nickel, lithium, hydrogen), the measured temperature of the reactor body was 410-460 degrees C. (Table 3, Column 3, Areas 1-10).
When the same reactor was run with the same electrical current. but now with the fuel present, the measured temperature of the reactor body was 1240-1410 degrees C (Table 6, Column 2).
The only thing that maintained an Celsius temperature difference of 800-900 degrees over a period of 32 days was the one gram of fuel.
Unless there is evidence of fraud, this is pretty compelling evidence that something new is going on.