You know, I still don’t know what to make of this. Search the Internet and you’ll find loads of articles, both for and against:

But the inventors do have something going for them. They have demonstrated the device publicly numerous times and their claims are looking more credible as more tests validate them. Video and reports of physicists who were present confirmed that electricity was produced.

The latest tests on the energy catalyzer by NyTeknik took place in Bologna on April 19 and 28. The test, as with previous tests, aimed to measure the net energy that the device generates as accurately as possible. The results of the tests from both dates showed a developed net power of between 2.3 and 2.6 kilowatts with and input electric power of 300 watts.

Either a couple of inventors have produced something totally game-changing, which of course I would love to believe, especially as that kind of thing is a science fiction trope, or they are completely deluded, or they are running a massive con.