What is LENR?

I’d like to put the text below for comment. On the menu bar for E-Cat World is a page titled “What is LENR?” and it has been a while since I have given it much attention. I think it is important to have a single page on the site, not too long or technical, that can give to someone new to the topic an overview of what LENR is all about. Since there is no widely accepted theory on the topic, I think it’s better to avoid debatable theoretical points in this article.

Thanks in advance for any comments!

LENR stands for Low Energy Nuclear Reactions — and refers to the phenomenon where anomalous amounts of heat are created when certain metals (e.g. nickel, palladium) absorb hydrogen or deuterium and an external stimulus such as heat or an electric current is applied. The reaction takes place at relatively low temperature and sometimes results in transmutation of elements as well as the production of heat. Either no strong radiation is produced or it is absorbed locally. The waste products have been found not to be radioactive. This phenomenon is also referred to as Cold Fusion, LANR (lattice assisted nuclear reaction), as well as other terms.

Modern interest in LENR began in 1989 when scientists Martin Fleischmann and Stanley Pons announced they had succeeded in generating nuclear reactions in laboratory experiments. This announcement sparked much interest in the media and in the scientific community, with many researchers attempting replicate the effect in their own experiments — many without success. The effect was not always easy to replicate, particularly as the preparation of the metal was critical and it sometimes took weeks for anomalous heat to appear. When the effect has been obtained it can also be difficult to control.

There are many attempts going on at the moment by various parties to be able to replicate and control the LENR effect. Several companies are now working on commercial products with claims of producing kW of power as heat. Andrea Rossi’s E-Cat invention has received a lot of attention because he was the first to publicly demonstrate his device and it has now been been tested by third parties, demonstrating at least ten times the energy of any known chemical reaction and showing that the E-Cat is capable of producing useful heat.

Andrea Rossi’s E-Cat seems to be the most promising candidate for the first useful commercial LENR product. He has a 1 MW plant currently undergoing production testing at a customer site (undisclosed), and if the year-long test proves successful, according to Rossi, widespread commercialization will begin in the first half of 2016.

Various claims are for a Coefficient of Performance (COP) from 6 to over 30 (meaning between 6 and 30 times more energy is produced than is input into a system). Even at the low end such a device would make obsolete virtually all other ways of producing power. High temperature, more efficient designs would be suitable for powering transport, even aircraft, although this would probably take decades. This promise of inexpensive, safe, clean power is why many are now following the subject.

There are many theories about what causes this heat effect, but none has been widely accepted or definitively proven.

Further Reading:

Lenr-canr.org — A library of research papers on LENR
LENR Proof — Examination of the commercial viablity of LENR
LENR For the Win — An examination of the evidence for LENR
Martin Fleischmann Memorial Project — An open science project to provide convincing proof of the ‘New Fire’
Vortex-L — Archive of email list dealing with LENR-related topics

  • Axil Axil

    LENR is any fusion reaction that does not conforms to the Lawson criteria.


  • MasterBlaster7

    This is what I would put on my LENR web page…

    What is LENR?……….yah, we still don’t know. working on it though.

    Please click the button below to donate to our PayPal act. We also accept Bitcoins.


  • Sandy

    I believe that it is technically correct of put a hyphen between “low” and “energy”; low-energy nuclear reactions (LENR).

    Nuclear reactions that take place at comparatively low energies are “low-energy nuclear reactions”. In contrast, nuclear reactions that take place in atomic bombs and in uranium-fueled nuclear fission plants are “high-energy nuclear reactions”.

  • Sandy

    Current wording: “LENR stands for Low Energy Nuclear Reactions.”

    Suggested revision: “LENR is an acronym for Low Energy Nuclear Reactions.”

    FBI is an initialism for Federal Bureau of Investigation. The letters F and B and I are pronounced separately.

    In contrast, NASA is an acronym for National Aeronautics and Space Administration because NASA is pronounced as a word.

    LENR is pronounced as a word and is therefore properly referred to as an acronym.

    • ecatworld

      I have head it pronounced both ways. Normally I refer to it as an initialism, but some people say it like ‘lenner’.

  • Bob Greenyer

    LENR is an acronym where what the letters stand for cannot be agreed by the researchers and followers in the field (except the last one)

    L – Low or Lattice
    E – Energy or Enabled
    N – Nuclear or Nano-scale
    R – Reactions

    How do you communicate something that is meaningless at first glance and cannot even be agreed on by those that work in and follow the field for various vested and personal reasons?

    For me, heat in excess of chemical derived from the interaction of matter, is and always will be “The New Fire”. The phrase encompasses all theories, is immediately understandable, translates easily and is unlikely to ever be superseded – maybe there is something beyond energy derived from mass change, but, given that it took us this long to get here, it is unlikely to happen soon. In time, perhaps the New Fire will be know as “Fire” and the old fire will be called just that.

    “The New Fire” alone cannot be trademarked and neither should it be possible.

    Rossi gets this – “E-Cat – The New Fire” is perfect, likewise there could be

    “Brillouin Energy – The New Fire”
    “NiCHEnergy – The New Fire”

    For me, the generic strap line would be this

    The New Fire – Beyond Chemical Energy ™

  • Mats002

    People have different preferences for recieving information, some prefer text, but other are more visual and will be better off with some short videos with clear speakers. I suggest adding a few short educational videos from different trustworthy sources, for example:

    Anthropocene Institute, the president of this organization is Carl Page, brother to one of the founder’s of Google:

    Simeon Hein, Massachussets Institute of Technology (MIT):

    Lenr-Canr.org introduction video from the heart of the LENR community:
    Possible some other better ones, but those are the top three on top of my mind right now

  • clovis ray

    HI, guys
    I have been following this for years, and to be honest, i’m not sure what IT is, and haven’t heard a good definitive answer.
    Dr.Rossi and Cook ,has as clear an answer, as could be believed, until new info is learned, i personally think it should have a new name,that is why i use the term , The Rossi effect, for the like of not having a name, so until all is known, this will be what i call it,.
    we maybe wrong in assuming it is LENR , or cold fusion. just my two cents

    • blanco69

      Total agree with this. In the four years since 2011 my views on what exactly LENR is haven’t solidified at all. Back in the day I was convinced that the energy output could only be explained by some form of nucear interaction.This may still be the case however, is LENR cold fusion in the classic sense? Probably not. Since 2011 the COP has dropped (remember the days of 25 and over?). Lithium has appeared in the mix and Rossi has stated that nickel may not be the actual fuel. In my view the ash analysis has been a lot less conclusive than I expected. So after 4 years I’m personally no further forward. In fact, I might suggest that I’m a little behind where I was in the early days. Whilst I am probably more convinced that Rossi will enter the market with a new form of heating device. I am less convinced that this device with be beginning of a new energy age. One thing I can say is that I check this website a few times a week and I’d like to thank Frank and all the other regular contributers for making this such a riveting story.

  • Mats002

    Maybe OT but probably related to the need for a refined introduction page, how has the latest year of reader statistics developed?

    • ecatworld

      Here’s an overview of traffic since the beginning of the site until now. As you can see there’s a slight increase over time, but it’s been relatively stable since October 2011, with variations based on news and events taking place.


      • Mats002

        Thanks for sharing the statistics openly, is the unique visitors following the same trends? I hope many more people will discover ECW in the coming months. You’re doing a great work Frank!

        • ecatworld

          Yes, unique visitors tracks basically the same. About 3/4 of all visits are returning visitors.

      • Alberonn

        we need a new spike : replicators, show yourself, c’mon… :<))

  • Gerard McEk

    Frank, maybe you can add the high power- and energy density of LENR which seems to compare with a nuclear process and that Rossi is now testing the 1 MW plant during a year WITHOUT REFUELLING and also if LENR is proved that it works, the cost of energy will dramatically drop. LENR has the potential to be the energy source for humanity for the next centuries and may be able to stop the exhaust of CO2 in the atmosphere.