(p. B4) Zap Energy, a fusion energy start-up working on a low-cost path to producing electricity commercially, said last week that it had taken an important step toward testing a system its researchers believe will eventually produce more electricity than it consumes.
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While many competing efforts use powerful magnets or bursts of laser light to compress a plasma in order to initiate a fusion reaction, Zap is pursuing an approach pioneered by physicists at the University of Washington and Lawrence Livermore National Laboratory.
It relies on a shaped plasma gas — an energized cloud of particles that is often described as a fourth state of matter — that is compressed by a magnetic field generated by an electrical current as it flows through a two-meter vacuum tube. The technique is known as “sheared flow Z-pinch.”
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Advances in stabilizing the magnetic field that is generated by the flowing plasma made by physicists at the University of Washington led the group to establish Zap Energy in 2017. The company has raised more than $200 million, including a series of investments from Chevron.
Recent technical advances in fusion fuels and in advanced magnets have led to a sharp increase in private investment, according to the Fusion Industry Association. There are 35 fusion companies globally, and private funding has risen above $4 billion, including from well-known technology investors like Sam Altman, Jeff Bezos, John Doerr, Bill Gates and Chris Sacca. Mr. Gates and Mr. Sacca invested in Zap’s most recent funding round.
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The Zap Energy physicists and executives said in interviews last week that they believed they were within a year of proving that their approach was capable of reaching the long-sought-after energy break-even point.
If they do, they will have succeeded where an array of research efforts — going back to the middle of the last century — have failed.
The Zap Energy physicists said they had made the case for the “scaling” power of their approach to produce a steep increase in neutrons in a series of peer-reviewed technical papers that documented computer-generated simulations they would soon begin to test.
For the full story, see:
John Markoff. “A Seattle Start-Up Claims a Big Step For Fusion Energy.” The New York Times (Thursday, June 23, 2022): B4.
(Note: ellipses added.)
(Note: the online version of the story has the date June 22, 2022, and has the title “A Big Step Toward Fusion Energy Is Hailed by a Seattle Start-Up.”)