Zap Energy has begun operations of Century, its new high-rep-rate, liquid-metal-cooled fusion test platform, and closed $130 million of fresh capital, marking significant steps toward a commercial fusion power plant.
Century is the first fully-integrated demonstration of several fusion power plant-relevant technologies, including one of the largest tests of a plasma-facing liquid metal blanket to date. Century has already demonstrated a test run of more than 1,000 consecutive plasmas in less than three hours into a chamber lined with flowing liquid metal.
Zap’s $130 million Series D was led by Soros Fund Management LLC, with participation by new investors that include BAM Elevate, Emerson Collective, Leitmotif, Mizuho Financial Group, Plynth Energy and Xplor Ventures. Current investors participating in the new round include Addition, Breakthrough Energy Ventures, Chevron Technology Ventures, DCVC, Energy Impact Partners, Lowercarbon Capital and Shell Ventures.
The new funding will be used to continue parallel development of both plasma R&D and systems-level plant engineering and integration, including the next generation in the company’s FuZE device series and a cutting-edge pulsed power capacitor bank.
The team is now attempting to reach a milestone outlined as part of the U.S. Department of Energy’s (DOE) Milestone-Based Fusion Development Program, and hopes to do so by the end of the year.
“The race for fusion commercialization has historically been thought of as a triathlon: science, then engineering, then commercialization,” says Zap CEO Benj Conway. “But at Zap, we’re attempting to swim, cycle and run at the same time – such a parallel approach is key to delivering commercial fusion on a timescale that matters. Century is a vital part of the engineering leg and we’re quickly coming up to speed.”
Z-pinch fusion from lab to grid
Zap Energy’s fusion approach, known as a sheared-flow-stabilized Z pinch, avoids large superconducting magnets and powerful lasers, and is far smaller than conventional systems.
To generate net energy from fusion, regardless of the type of device, the plasmas inside must satisfy fusion’s triple product: they must be hot enough, and dense enough, for long enough. With a track record of rapid progress in plasma physics using two workhorse fusion devices, and recent results reinforcing the viability of the path ahead, Zap has begun work engineering new devices to face greater extremes and harness fusion’s energy output.
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“From its inception, Zap Energy‘s founders had an idea of how a power plant based on our Z-pinch configuration would work,” says Zap Vice President of Systems Engineering Matthew C. Thompson. “Our job is to develop and validate those plans by actually building, testing and maturing key technologies. Century is our next major step in that effort.”
About Century
Century is the world’s first 100-kilowatt-scale repetitive Z-pinch system. Its goal is to integrate and test three major aspects of Zap’s power design: repetitive pulsed power supplies, plasma-facing circulating liquid metal walls, and technology for mitigating electrode damage.
Century is designed to simulate plant-like operation by:
- Firing high-voltage pulses of power every ten seconds in a steady sequence for more than two hours (>1,000 pulses at 0.1 Hz).
- Circulating 70 kilograms of hot liquid bismuth in its initial configuration and well over a ton in its final configuration. Air-cooled heat exchangers will remove the intense plasma heat absorbed by the liquid metal.
- Testing critical strategies for mitigating electrode damage due to extreme heat and neutron flux.
SOURCE: PRNewswire