Pacific Fusion breaks ground on a $1B machine targeting net facility gain

Why it matters

Pacific Fusion is converting milestone-gated venture funding into industrial fusion hardware. Net facility gain would validate its modular pulsed-power architecture, while commercial power still requires substantially higher output and a jump from a handful of daily shots to roughly one per second.

Pacific Fusion co-founders Carrie von Muench and Keith LeChien broke ground in Albuquerque on August 25th on a fusion machine built around 156 identical pulser modules. The $1 billion demonstration project is designed to produce more fusion energy than the electricity stored in its capacitors. A commercial plant would still need about five times the output and a firing rate measured in shots per second instead of shots per day.

Pacific Fusion is targeting net facility gain by 2030, TechCrunch reported. That milestone would account for the energy initially stored to drive the reaction, going beyond experiments that produce more energy than reaches the fuel, including the National Ignition Facility's 2022 ignition result. Nature reported that Pacific Fusion expects each shot to use about 80 megajoules of stored electrical energy and produce about 100 megajoules of fusion energy.

"It's a huge step forward for commercial fusion power," von Muench told TechCrunch. She also supplied the less glamorous explanation for Pacific Fusion's construction speed: financing. Pacific Fusion secured more than $900 million in a milestone-gated Series A led by General Catalyst, giving the founders committed capital without handing them all of it before the hardware worked. TechCrunch reported that Pacific Fusion has since raised more than $1 billion, though public descriptions do not reconcile that total with the earlier Series A figure.

Five founders, one unusually industrial plan

Pacific Fusion's founding group was assembled around distinct pieces of the same problem. Eric Lander, a principal leader of the Human Genome Project and former White House science adviser, brought experience organizing large scientific institutions, according to the Broad Institute's biography. Will Regan worked on the Department of Energy's ARPA-E fusion program and later built energy projects at Alphabet's X. LeChien previously led pulsed magnetic fusion work at Lawrence Livermore National Laboratory and co-invented the impedance-matched Marx generator at the center of Pacific Fusion's design, according to General Catalyst's investment account.

Von Muench came from a different direction. She worked in strategy at X and invested in climate technology at Innovation Endeavors before becoming Pacific Fusion's chief operating officer. Leland Ellison, the fifth co-founder, developed simulation software at Lawrence Livermore and now leads Pacific Fusion's modeling work. The Albuquerque build requires plasma physics, manufacturing, simulation, government collaboration and project finance to advance on the same schedule.

The founders wrote in their 2024 founding letter that the 2022 ignition result and advances in pulsed power created the opening for Pacific Fusion. Pacific Fusion was founded in 2023 around the thesis that national-laboratory breakthroughs could support an affordable, scalable and modular fusion machine. Its design divides the driver into repeatable components that can be built and tested in factories.

The machine is 156 copies of the same hard problem

The demonstration system will surround a meter-scale fusion chamber with 156 pulser modules. Each module contains 32 circular stages, and each stage is assembled from 10 "bricks" containing two capacitors and a switch. Fired together, the modules will deliver a fast electrical pulse that creates a magnetic field around a deuterium-tritium target roughly the size of a pencil eraser.

Pacific Fusion's manufacturing thesis rests on those repeated parts. In its June technical update, the company said its modular approach uses common industrial materials including steel, aluminum, plastic, oil and water. Modules can be built away from the final site, transported and serviced as industrial equipment. The design also lets Pacific Fusion test its driver independently from the chamber and fuel target, shortening the feedback loop when something fails.

The first evidence arrived this spring. As RuntimeWire reported in June, Pacific Fusion tested a roughly one-third-scale pulser that produced 440 gigawatts of peak power and 1.1 million volts during an 80-nanosecond pulse. Pacific Fusion's update says the prototype completed more than 1,000 qualification shots. Pacific Fusion said a production-scale module was planned for later in 2026 and that it was scaling manufacturing operations for the remaining 155 modules.

Pacific Fusion grew from 44 employees in October 2024 to more than 110 California-based employees by September 2025, according to its New Mexico expansion announcement. Research remains centered at facilities in Fremont, San Leandro and Livermore, while Albuquerque is planned as Pacific Fusion's manufacturing and demonstration hub.

Net facility gain still leaves a power plant to build

The Albuquerque machine is a demonstration system. It will fire only a handful of shots each day, LeChien told TechCrunch. A full-size power plant will need to complete one shot per second.

Output also has to climb. TechCrunch's report says Pacific Fusion expects a commercial system to produce about five times as much energy as the demonstration machine. Pacific Fusion's technical milestone framework estimates that a power plant would need roughly three to four times net facility gain to cover conversion losses and other power needs.

Independent researchers see a credible experiment with a long engineering tail. Michael Campbell, a fusion engineer at the University of California, San Diego, told Nature that generating 100 megajoules from an 80-megajoule charge would be a strong achievement. Nature also reported that the initial pulse energy would reach only about one-fifth of the level Pacific Fusion expects a power plant to require.

A fusion facility with a second job

The Albuquerque campus is also planned to host national-security experiments involving high-yield fusion, according to TechCrunch's report. Pacific Fusion is working with Sandia and Lawrence Livermore, whose pulsed-power research supplied much of the technical foundation for the impedance-matched Marx generator design, as described in the founders' letter.

That dual-use role gives the facility another institutional purpose before a commercial generator reaches the grid. New Mexico also places the manufacturing and experimental campus close to the national laboratories and technical workforce that developed pulsed-power fusion.

The founders have converted their first three years into prototype results, more than $1 billion in reported private backing and an Albuquerque construction site. The groundbreaking leaves Pacific Fusion with the harder part: making 156 modules behave as one machine, strike a fuel target with nanosecond precision and produce more fusion energy than the electricity stored for the shot by 2030.