United States Patent US 9,115,913 B1

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40,878 comments to United States Patent US 9,115,913 B1

  • Andrea Rossi

    Thank you for your attention to the work of our Team,
    Warm Regards,

  • M.Münch

    Dear Mr. Rossi,
    can i pre-order 10 ecat sklep (1 KW) already installed in a portable box with AC 230V in- and output How much does it cost incl the proper box?
    Best regards

  • Andrea Rossi

    Yes, but obviously the generated Wh/h will be proportionally less.
    Warm Regards,

  • Anthony

    COP 25000 !!!!
    It’s a miracle.
    Thank you, Dr Rossi, mafnificent video

  • Andrea Rossi

    Bob Belovich:
    We have to install a back up,
    Warm Regards,

  • Andrea Rossi

    Diego T.:
    Actually, 1 cubic meter contains 1 mllion of cubic centimeters ( 1 m^3 = 10^6 cm^3 )
    Warm Regards,

  • Andrea Rossi

    Daniel G. Zavela:
    Thank you for your attention to the work of our Team.
    1- Agreed
    2- We wanted to make the most simple system, with less possible cables displayed in a perfectly translucent plexiglas island, 100% visible and simple to see and understand.
    3- we published the starting day and time and the streaming is visible 24/7 in the whole world. So it runs from the date we published and everybody can
    see that it is on anytime he watches
    4- yes
    5- it turns on in 1 second
    Warm Regards,

  • Dear Dr. Rossi,

    1- A product demo with the E-Cat SKLep Mini powering a lamp is just what the public needs.

    2- I wondered why a power supply was used instead of plugging the E-Cat directly into the wall socket and measuring the input (power used using for example a P3 International P4460 Kill A Watt EZ Electricity Usage Monitor) and output (from the E-Cat) with a voltmeter?

    3- The clock display does not show elapsed time; so it is difficult to know how long the E-Cat has run.

    4- In the event of the mains power going down is there a backup generator connected to the wall socket to provide continuous power to the E-Cat?

    5- If the mains power goes down, what is the restart sequence?

    Wishing you great marketing success.

    Best Regards,

    Daniel G. Zavela

  • diego t.

    I was thinking a 50 cubic as 1/8 of a cubic meter
    sorry again

  • diego t.

    sorry dr Rossi
    but if 50cm cubic are 10 W it’ s impossible 5 litres are 1 Kw

  • Bob Belovich

    Dear Andrea

    What happens to an ecat sklep when the grid to which it is connected goes down, like the situation in parts of Florida this week?


    Bob Belovich

  • M.Reinhold

    Dear Dr. Rossi,
    I thought it would not be possible to run a 55 Watt lamp with the mini ecat skl which just produce 10 Watt and therefore would switch off. But if this is possible so i can connect an ohmic electric heating with 700 Watt to e.g. 5 ecat skl (500 Watt). Is this correct?
    Best regards

  • Andrea Rossi

    It depends on what you mean with normal domestic necessity: how many kW of power do you have necessity of for the services you want to make the switch of ?
    Warm Regards,

  • Massimo

    Salve Dott. Rossi, ho conosciuto la sua vicenda e le sue invenzioni tanti anni fa.
    Premetto che sono l’antitesi della competenza in materia, per un utilizzo residenziale medio quanti moduli si devono comprare?
    Sono già disponibili?
    Grazie mille
    English synopsis:
    How many units have I to pre-order for a normal domestic necessity ?

  • Andrea Rossi

    Hugh Maguire
    Warm Regards,

  • Hugh Maguire

    Just one spec, if possible. I’m a bit confused. The Cobo halogen BULB in the lamp connected to the MiniSKLep is a H4 55 W bulb, right?
    So are you running the lamp using 10 W of current, which would account for the fact that it’s not as bright as it would be if used, for instance, in a car?
    Is this correct?
    Best of luck with the demo

  • Andrea Rossi

    Italo R.:
    Thank you and thanks to all the Readers that are expressing support for this job.
    The Mini SKLep is the basic component of any superior power.
    Its live volume (the volume necessary to work) is 50 cubic centimeters, which means 5 cubic centimeters per W, which means 5 liters per kW, which means 5 cubic meters per MW. Which is pretty good. For us it is indifferent if the orders are in SKLep or in Mini-SKLep, what we manufacture are the Mini-SKLeps, eventually assembled to make 100 W, 1000 W, etc assemblies. This allows us a good economy scale. In fact 1 SKLep costs exactly 10 times a Mini SKLep. We just decided to sell also the single cells. As I said, 10 Mini SKLeps will account for 1 SKLep in relation to the target of one million units ordered: for us it is indifferent if we sell 1 million SKLeps, or, for example, 500000 SKLeps and 5 millions Mini-SKLeps: the sum of the worth is the same.
    Warm Regards,

  • Andrea Rossi

    CC et All Readers:
    Yes, your numbers are correct.
    This answers also to the other readers that asked the power of the lamp.
    Warm Regards,

  • Italo R.

    Dear Dr. Rossi,
    Congratulations on the streaming video for the mini Ecat!
    It is a very clear, clean and simple setup and clearly shows that the ect works while consuming practically nothing. Great!
    My next consideration is this: why not do a similar proof for the Ecat-SKL-ep as well?
    The effect would be disruptive and would instantly boost the number of orders. Are you interested in speeding up the number of orders? Obviously this is the case, so why not do this proof? Thanks for an answer.
    My best regards,
    Italo R.

  • George

    Dear Andrea,
    I watched the streaming: excellent, excellent, excellent.
    All the best

  • CC

    Dr Rossi:
    Congratulations for the (expected) 100000 hours endurance test of the Mini SKLep I found here:
    I liked also very much the backstage I watched clicking the “more” link under the video.
    The electricity consumed is 0.0002 W, calculating 10 V x 0.000 A that becomes 0.001 A for about half second every 3 seconds.
    Now I make this consideration: assuming that the electricity generated by the Ecat is 5 W, the COP is:
    5/0.0002, which means that the COP is 25000 !!!
    Am I correct ?
    God bless you and your team,

  • WaltC

    Dr. Rossi,
    With respect to your new livestream of the MiniSKLep — Nice! Very, very nice! I’m excited to finally see it in action, so unlimited congratulations to you and your team!!

    1) I had a hard time on finding the specs for the light (COBO Spa 05.685-12V). I think I found it on a German site– Halogen headlight, 12v 55watt. Is that correct?
    2) Can I assume that if the MiniSKLep is being driven at 10v then its output voltage is also 10v?

    Thanks, Congratulations on a fantastic demo!

  • Maico

    Dear Dr. Rossi

    I’m very happy for the streaming of MiniSKLep 🙂

    what is the power of the led lamp inside of the headlight?

    how many W?

    Best Regards


  • Jole

    Dr Andrea Rossi,
    Congratulations for the video of the Ecat Mini-SKLep. Impressive.

  • Joseph

    Dear Readers,
    If you go to
    will find a video of the Ecat SKLep that is fantastic

  • Andrea Rossi

    Frank Acland:
    I thought I had already explained the issue, but I have to thank the Ecat World Reader for making me understand I had not been sufficiently clear.
    So, let me synthetically rephrase.
    The Input for the SKLep must be from the grid, caused from the necessity of a grounded power source.The exact voltage depends on the regular voltage of the grid. The output can be either DC or AC, depending of the specific situations; also from the specific situations depends the output Voltage.
    Warm Regards,

  • Andrea Rossi

    H. Shilling:
    Sorry, I am not sure I understood exactly your question: can you rephrase ?
    Warm Regards,

  • Andrea Rossi

    Thank you for your support,
    Warm Regards,

  • Andrea Rossi

    Hermes Atar Trismegistus:
    Thank you for the link,
    Warm Regards,

  • Andrea Rossi

    Silent Majority Guy:
    Thank you for your support,
    Warm Regards,

  • Andrea Rossi

    Thank you for the suggestion,
    Warm Regards,

  • Andrea Rossi

    Gavino Mamia:
    The top line indicates Volts, as correctly written in the video. We have 10 V, 0.000 A and 0.0 W
    As you can see, now and again the Amperes have a peak of 1 mA ( 0.001 mW ) This peak lasts about 1/10 of second every 3 seconds.
    Initially are possible technical problems of the direct streaming, it is possible the now and again the broadcasting falls down, anyway it will go no for 100000 hours, so some pationce for the first day should be be not a big issue…
    Warm Regards,

  • Gavino Mamia

    finally a streaming video as we have asked you in many

    this link doesn’t work though

    Top Line aren’t Watts?
    you wrote volt

  • Robert M

    I am not sure if you have tried this yet. I think it is an idea that may have some merit.
    Attach a small ceramic magnet (or any magnet) to the ground of the ecat. You are not inducing a current but setting up a Bias, like a transistor drain. This should create a fake leakage current and appear as if you were connected to stable power and allow the ecat to continue to process even after disconnecting from the mains.
    Very small time consumption to test this.
    Thank you!

  • Silent Majority Guy

    Dr Rossi:
    Great video: will it go on for 100000hours without pauses ?
    Great !

  • Dear Andrea,

    If you want to invent a free energy device that can be connected to a battery instead of wall socket. You should read what Norman Wootan writes about positive and negativ ions at:


    Best Wishes, Hermes

  • Roberto

    Dear Dr Andrea Rossi:
    The video of the Ecat Mini SKLep is stunning !!!

  • Frank Acland

    Dear Andrea,

    I received the following suggestion from a reader of E-cat World today, I wonder if you could comment.

    “The best thing AR could do right now is very clearly and in an open fashion, describe EXACTLY what the input power requirements are for the SKLep. It’s fine if the SKLep itself must remain a black box, but the input requirements cannot be left up in the air if he expects to sell a lot of ECATs.”

    “So, it can’t be “this will work, this won’t.” it needs to be “these are the requirements; if met, the ECAT will work,” and “grid” is not a precise enough requirement. He needs to specify the input voltage and current requirements, and perhaps power frequency (if AC or some particular waveform is needed) and grounding requirements. No magic.”

    Thank you,

    Frank Acland

  • H.Schilling

    Dear Dr. Rossi,
    I just read old questions and your answers. There is one VERY interesting question which you not really answered definitely:

    2022-09-17 15:00 Urs
    Dear Dr. Rossi,
    as a complement zu Mr. Milan’s question of “..in a way that if all devices need less than 1kW I don’t pull power from the grid and if my devices need more than 1kW the DIFFERENCE is pulled from the grid?”
    You answered it should be possible etc
    1) —-> Do you think it would be possible to do this without a battery? <—-{THIS QUESTION}
    That would be awesome!It would mean that i can spend the 5000 Euro instead for a battery for ecats.

    Best regards

  • Andrea Rossi

    The Ecat can act like a charger
    Warm Regards

  • Andrea Rossi

    Warm Regards

  • Paul Dodgshun

    Dear Andrea Rossi,

    You have stated that the SKLep has received CE certification.
    1: Would CB certification also be worthwhile for the input and output AC circuits?
    2: Can the SKLep provide both active and reactive power to electrical motors?
    3: Can the AC/AC SKLep synchronise to a live 2-phase AC system when switched on?


    Paul Dodgshun

  • Darko

    Dear Dr. Rossi,
    In the last 18 months, the wholesale price of electricity, expressed in euros per MWh, went up from 57 to 543 in Italy and from 49 to 469 in Germany. Has that created an opportunity for you to sell 1 MW plants?
    Best regards,

  • RL

    Good day Mr Rossi,

    Many people want to connect the SKLep directly to a battery. Others want to operate devices directly with the SKLep.
    A charger can also be a power supply unit, but a power supply unit is a bad charger. There is a risk of destroying the battery.
    Does the SKLep function as a power supply unit or as a charger? So does the SKLep react differently to a fully charged battery or does it consistently do full work with constant current or constant voltage?

    Many thanks

  • Jeff

    Dr Rossi,

    If Plan B is to be an online running demonstration than what is the point of holding off from doing that?

    Best Regards,

  • Andrea Rossi

    If the Ecat is not delivered to somebody for any reason and if somebody cancels the pre-order before the delivery for any reason, nobody owes money to anybody, for any reason,
    Warm Regards,
    Dr Andrea Rossi, CEO
    Leonardo Corporation

  • Andrea Rossi

    Claudio R.:
    1- we cannot help you with the bureaucracy issues: obviously you must respect the local laws and you did well asking help from a certified contractor
    2- you can change your pre-order whenever uou want, conserving the priority you already got
    3- to update your pre-order you must make a new one in substitution, filling a new form here:
    Write in the form that your former pre-order dated… must be cancelled.
    Warm Regards,

  • Claudio R.

    Dear Mr. Rossi Today I asked a technician if I could use 20 ecat 100w devices (when of course they would be available) to run the engine of a cold store.
    He reprimanded me by telling me that in any case I would have to make a request to an institution in my country for the installation if the power exceeds 750 w so I assume beyond the wait we will also have to climb the hill of bureaucracy. Apart from waiting and bureaucracy, having booked 2 skleps in December with 12v output, could I change the order to 2 with 220v output without losing priority?
    And if I can, what steps should I take? thanks Sincerely Claudio R.

  • Corriandolo

    Dr Rossi,
    Assume that you will not deliver the Ecat to some person that made a pre-order, whatever the reason, or that a person who made a pre-order will cancel it, whatever the reason: will these persons have to pay anything, whatever the reason ?

  • Andrea Rossi

    Steven Nicholes Karels:
    Thank you for your indight,
    Warm Regards,

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