Rossi States E-Cat SKL Runs in a Closed Loop and is Silent (Update: Still Running)

Here are a couple of questions put to Andrea Rossi about characteristics of the E-Cat SK Leonardo. The first, from me, about whether the SKL was running in a closed loop.

Frank Acland
November 25, 2019 at 8:15 AM
Dear Andrea,

In your test this Saturday, was the E-Cat SK Leonardo operating without being connected to any external power source? In other words, was it operating in a closed loop (producing enough power to sustain itself)?

Andrea Rossi
November 25, 2019 at 10:41 PM
Frank Acland:
Yes, the Ecat SK Leonardo works in closed loop, producing enough electric energy to sustain itself, plus electric energy to power for example an engine, or whatever you want, reaching any power just assembling ,ore modules to put in series and parallels. Here stays the revolution.
Warm Regards,

The other question was about the noise levels of the E-Cat SKL:

Donald G Chandler
November 25, 2019 at 1:32 PM
Dear Dr Rossi

Congratulations on your announced success with electricity generating SSM ecat.
Can you tell us how quiet or noisy this device is?
1. Fan noise?
2. Relay noise?
3. Inverter/magnetic hum?
4. Other?
5. What decibel measurement? Or comparison. E.g. like a desktop computer?


Andrea Rossi
November 25, 2019 at 1:49 PM
Donald G.Chandler:
No noise at all
Warm Regards

It all sounds rather unbelievable, some might say too good to be true, but speaking for myself, I think it is likely his claims are true. Of course it needs to be demonstrated and that’s something we need to see.

The best way that I conceptualize this is that Rossi has invented a new kind of battery that operates on new principles but does essentially the same kind of things that we are used to batteries doing: producing electric current. Like a traditional battery, it will eventually run out charge and will need to be replaced or recharged.

If it is closed loop and silent it wouldn’t surprise me if over time the E-Cat SKL was engineered into something as small as a AAA battery and could be incorporated into everyday portable consumer products as well as larger appliances and vehicles.

UPDATE: Thanks to Gerard McEk for posting the following questions to Andrea, and for him responding.

Gerard McEk
November 26, 2019 at 2:56 AM
Dear Andrea,
I have some additional questions if you allow me:
1. Is the ECat SKL you put in closed loop operation on 11/23 still running, disconnected from external supplies?
2. Is one of the test to see how long it can run?
3. How do you measure its electrical output?
4. How do you measure its heat output?
I hope it runs for ever!
Thank you, kind regards, Gerard

Andrea Rossi
November 26, 2019 at 10:56 AM
Gerard McEk:
1- yes
2- indefinitely
3- by a load
4- by calorimetry
5- I hope too
Warm Regards,