On October 18, Defkalion published two documents: An executive summary and an extensive report of tests of their system in which the names of third parties who witnessed the tests, which were conducted in September in Greece, were redacted.
The reports are very interesting. Here are the conclusions from the summary report (the emphasis is mine):
1. Defkalion was able to demonstrate an excess of energy.
2. They were able to demonstrate that they can fully control the reaction: starting it, stopping it, increasing and decreasing it.
3. They were able to demonstrate that the reaction is dependent on hydrogen gas.
4. The contents of the reactor were removed and weighed to be 59 grams of mass, most of which was a ceramic encasement. Therefore, the reaction appears to produce more energy than a chemical reaction from a known amount with an equivalent mass; implying a nuclear reaction is involved.
5. There were error bands associated with all data obtained which have not yet been completely established. These will need to be addressed in a detailed analysis of this data.
6. It is my opinion that Defkalion is sincerely attempting to accurately measure and demonstrate the performance of their technology with confidence that they can achieve a COP over 1 for a long enough period to exclude any possibility of a chemical reaction.
Upon a preliminary look at the data, the reactor was operating well in excess of a COP of 3.
The executive summary was written by Michael A. Nelson, a NASA employee of some thirty years standing.
I contacted Mr. Nelson and found out that he was not attending the tests as a representative of NASA but rather on behalf of The Free Energy Foundation