Based on this Q&A today on the Journal of Nuclear Physics, it seems that there may have been a breakthrough that brings SSM (self-sustain mode) back on the table. Andrea Rossi had announced earlier this month that the first household E-Cat units would be heaters only, but that they were continuing to work towards electricity generation in their R&D.

Ecat Enthusiast
May 29, 2026 at 2:33 PM
Dr. Rossi:
What do you think the probability is of having the global Ecat presentation this year?
Regards, Ecat Enthusiast

Andrea Rossi
May 29, 2026 at 3:33 PM
Ecat Enthusiast:
I am sure that the global presentation is 100% probable within one year; 50% within this year. The difference is due to very important developments in our R&D we made in these very days, that could make possible the SSM: if the SSM will demand some more time, we prefer to delay several months, and go SSM, for obvious reasons.
Warm Regards,
A.R.

Having the E-Cat as an electricity generator obviously makes it much more appealing than just a heater, so one can understand why Rossi & co. are pushing to solve the problems connected to SSM. But they have to get it right, it would a disaster if unsafe or unreliable products were released when they start distribution.

UPDATE:

I followed up with a question to Andrea Rossi, and received an answer.

Frank Acland
May 30, 2026 at 7:37 AM
Dear Andrea,

I was pleased to read that you may have made a breakthrough with the SSM. How confident are you that it is a real solution?

Andrea Rossi
May 30, 2026 at 9:00 AM
Frank Acland:
70/%: if it works we will know certainly within 4 months, eventually we will need time for endurance tests and safety certification; maybe we will complete everything by the end of the year, maybe we will extend to January 2027,
Warmest Regards,
A.R.