E-Cats Getting Smaller

Some interesting information was given by Andrea Rossi today on the Journal of Nuclear Physics regarding the smallest size of the E-Cat.

Herb Gillis asked Rossi what his understanding was regarding the smallest possible size that an E-Cat could be.

Rossi responded:

Andrea Rossi
May 1st, 2015 at 3:36 PM

Herb Gillis:
I talk only of what I know and have experienced: so far the smaller is 1 kW power. The amount of charge can be about 1 g.

Warm Regards,

My guess is that Rossi here is referring to Hot Cats that he is working on while he watches over the 1MW plant in his shipping container. He has said recently that they have had success improving the COP of the Hot Cat, by some ‘ingenious’ method. Since we learned today that in the 1MW plant Rossi’s team has been able to increase the COP by driving some E-Cats with others, I would expect that they have been trying something similar with the Hot Cats.

The fact that Rossi is able to drive one E-Cat with another implies that the heat from one E-Cat can stimulate the reaction in another — but there could be some other EM or RF stimulation involved.

I think this is the smallest size E-Cat that we have heard Rossi say he has worked with, and it could be that working with smaller reactors is the key to improving COP because of the apparently successful ability to have them power each other.

  • Anthony Richards

    Some time ago, it was postulated that domestic appliances could each have their own little e-Cat.

  • Axil Axil

    In the normal e-cat, the engine is supplied with hydrogen by an external source and does not need heat, or much less.

    Why do you think this?

  • Axil Axil

    A product design that would make the Rossi design irrelevant is a LENR battery. This products would convert nuclear energy directly to electric power output. At the size of a pencil, this cool running device would produce 10 Kilowatts of power and be modular pug and play like a lithium battery either in series or in parallel.

    There is still lots of room for innovation in the LENR marketplace.

    • mcloki

      That’s a huge leap in technology though.

    • mcloki

      Also wouldn’t it be a 1200 degree battery?

    • friendlyprogrammer

      Sounds like a Tommyknocker world where everything is powered by “C” batteries. Nice vision.

  • friendlyprogrammer

    Pellet sized ecats designed to have runaway heat and meltdown was a unique idea someone on this website mentioned in a comment long ago (I think).

    The notion is to have disposable ecats manufactured in a robotic clean room that are designed to be disposable and burnt up like firewood (exaggerating simplicity).

    This could harness the explosive power of their combustion or just harness the heat, depending upon design. I think it was a unique idea worth more interest.

  • Warthog

    See “Nanor”. At this point, no one knows what the lower size limit will be. My personal take is that nanoscale lithography will be eventually be used to create multiple “nuclear active environments”, which will in turn comprise “u-Cats” (micro-Cats) on a single chip.

  • Oystein Lande

    Interesting: Rossi says the 1MW plant has rated electrical heating elements of 250KW, i.e. That’s the Max heating that can be supplied by Jôule heating. Which means he must achieve a COP of minimum 4 to delivered 1MW power…

  • David_Kaiser_39

    Sorry, it is ecat.com.

  • William D. Fleming

    I remember when the ultimate goal for a GPS receiver was that it be the size of a small suitcase. For cold fusion, think the size of a ball-point pen.

    You must live in a cold climate. I’d like to see a pocket sized air conditioner.

  • pelgrim108

    1.1 is a strange COP. It would mean that it is a reactor or a collector of some kind.
    However why make the complications when the COP is 1 or a little bit higher than 1.
    I dont think Rossi would mention 1.1 if there was a chance that it would be lower than 1.

    Has Rossi ever spoken about where “in situ” is?

  • Ophelia Rump

    A LENR powered bicycle could change life for the better for many people around the globe.

    • Axil Axil

      This LRNR bicycle would reqire a reactor type that has not yet been invented. Can you describe how this reactor would need to look?

      • mcloki

        It would be easier to use LENR to make electricity and transfer it to a regular battery. There’s a huge installed infrastructure for both electricity and batteries. That’s the quickest way to market and most likely the way IH will get the initial 1.0 version to market.

      • LENR bicycle is not so hard.
        like for plane or car, first idea is to start from an hybrid electric.
        a bike with 250Wmech is well assisted. with 1kW it is nearly dangerous (a champion is 500W, a beginner about 100W, a trained amateur s 300W).

        replace half of the batterypack with a reactor+ an engine (stirling, thermoacoustic, TEG, rankine) and recharge the battery with a 1-2kWth reactor.

        in a way, bike assistance allow better throttling , and simply letting the reactor help the wheel continuously, remind me the “Solex” which had great success.

  • Bob Matulis

    Please explain to me the difference between the hot-cat and the lower temp one. Is AP’s a hot-cat? Thanks

    • pelgrim108

      Alexander Parkhomov’s reactor is simlar to Rossi’s Lugano Hot-Cat.
      The LT-Cat is a mystery ( to me anyway), so it is difficult to compare apart from the obvious.

      • Bob Matulis


  • artefact

    If you need between 0 and 5 KW you can use a 1KW future electric e-cat (if that is your average) and buffer with a battery to account for peaks.
    The output of the e-cat is constant but the usage of it is not.

    • R101

      True that. Thanks.

  • David_Kaiser_39

    I made a request for 22 MW power for a plant I want to run.I made this through eat.com. No answer. I am seriously interested. Does anyone has an idea/proposal how to get to these guys? Thanks. David Kaiser

  • Zeddicus Zul Zorander

    Logically, the 1KW ecat should be the mouse.

    But smaller ecat’s should not really pose a problem engineering wise.

    • pelgrim108

      Last time I heard, the mouse has a COP of 1.1 So how does that fit in with a 1kW E-Cat.

      • Zeddicus Zul Zorander

        I think this is the mouse which is somehow integrated with the 10KW ecat to control it’s output. Small ecat with low COP to feed the 10KW big ecat for higher COP.

        But it could also be that Rossi is creating smaller ecat’s with lower output, though I can’t really imagine what for.

  • bachcole

    With some of Elon Musk’s batteries, 1 kW would do just fine for my house.

    • clovis ray

      i just started to say the same, took the words right out of my mouth. -smile- he is probably tweaking his house cat, or for a better name the( top cat) an interchangeable reactor, that will do work anywhere you want it,

  • Steven Irizarry

    tesla motors unveiled a badass battery