How repeatable ignition sparked a global race between national labs, China's tokamaks, and billion-dollar startups racing to commercialize fusion power
How repeatable ignition sparked a global race between national labs, China's tokamaks, and billion-dollar startups racing to commercialize fusion power
Los Alamos physicists achieved fusion ignition using a target that shouldn't have worked. On June 22, 2025, their THOR design—deliberately adding windows that leak energy—generated 2.4 megajoules of fusion power at the National Ignition Facility. The shot created burning plasma, a self-sustaining reaction where fusion itself drives more fusion. It was ignition with a scientific instrument built in.
Fusion research transformed dramatically in early 2026. China's EAST tokamak broke the Greenwald density limit on January 1, a barrier that had constrained plasma density in magnetic confinement reactors for 70 years. Commonwealth Fusion Systems installed the first magnet for its SPARC demonstration reactor and landed a partnership with Nvidia to create digital twins of fusion systems. Private fusion companies have now raised over $7 billion, with TAE Technologies merging with Trump Media in a $6 billion deal and General Fusion announcing plans to become the first publicly traded pure-play fusion company. The question is no longer whether fusion works—it's who will commercialize it first.
20 events
Latest: January 22nd, 2026 · 4 months ago
Showing 8 of 20
JK to step
Tap a bar to jump to that date
Jump to
January 2026
General Fusion to Become First Public Fusion Company
LatestBusiness
General Fusion announces merger with Spring Valley Acquisition Corp. III to become world's first publicly traded pure-play fusion company.
China Hosts Fusion Energy Technology Conference
Policy
Fusion Energy Technology and Industry Conference 2026 held in Hefei to build collaborative innovation ecosystem for nuclear fusion energy.
Commonwealth Fusion Systems Installs First SPARC Magnet
Progress
CFS installs first of 18 magnets for SPARC demonstration reactor, announces partnership with Nvidia for digital twin development. Expects all magnets installed by summer 2026.
China's EAST Breaks Greenwald Density Limit
Breakthrough
EAST tokamak achieves plasma densities 65% beyond Greenwald limit, overcoming 70-year barrier. At 150-million-degree temperatures, breakthrough could quadruple energy output.
NIF Enables First Stellar Nuclear Reaction Measurements
Research
LLNL radiochemistry team makes first experimental measurements of nuclear reactions in high-energy-density plasma environments similar to conditions in stars and thermonuclear explosions.
December 2025
TAE Technologies Announces $6B Trump Media Merger
Business
Trump Media & Technology Group agrees to merge with TAE Technologies in all-stock deal valuing combined company at over $6 billion. TAE plans to begin building 50 MWe utility-scale plant in 2026.
October 2025
DOE Releases Fusion Roadmap
Policy
Department of Energy announces strategy targeting commercial fusion power by mid-2030s.
September 2025
Commonwealth Fusion Secures $1B+ Power Deal
Business
Italian energy giant Eni signs landmark $1 billion+ Power Purchase Agreement to buy power from CFS's future ARC commercial plant.
DOE Awards $134M for Fusion Research
Funding
Energy Department announces $134 million for FIRE collaboratives and INFUSE program to accelerate private-sector fusion development.
June 2025
Los Alamos Achieves Windowed Ignition
Breakthrough
LANL's THOR design with diagnostic windows achieves 2.4 MJ ignition, proving robustness.
NIF achieves ignition for seventh time with 2.05 MJ shot yielding 5.0 MJ, setting target gain record of 2.44.
January 2025
China's EAST Sets Plasma Duration Record
Record
EAST sustains plasma for 1066 seconds (nearly 18 minutes), breaking previous record and demonstrating sustained tokamak operation.
February 2024
Yield Doubles Input Energy
Progress
Experiment produces 5.2 MJ from 2.2 MJ laser energy, more than doubling input.
July 2023
Second Ignition Exceeds First
Progress
NIF achieves 3.88 MJ from 2.05 MJ input, confirming ignition is repeatable.
December 2022
Public Announcement of Ignition
Announcement
Energy Secretary Jennifer Granholm announces historic achievement to the world.
First Fusion Ignition in Laboratory History
Breakthrough
NIF produces 3.15 MJ from 2.05 MJ laser input, achieving scientific breakeven for first time.
August 2021
Major Breakthrough Shot
Progress
NIF achieves 1.3 MJ yield, 70% of laser input energy, 25 times previous record.
September 2012
Ignition Campaign Falls Short
Setback
Initial campaign ends at 1/10 of conditions needed for ignition after two years of attempts.
May 2009
NIF Becomes Operational
Facility
National Ignition Facility fires all 192 laser beams for first time, delivering 1.098 megajoules.
Historical Context
3 moments from history that rhyme with this story — and how they unfolded.
1 of 3
1997-2024
JET Tokamak Sets Fusion Record (1997-2024)
The Joint European Torus in the UK achieved 16 MW of fusion power in 1997, a record that stood for 25 years. JET used magnetic confinement in a doughnut-shaped tokamak, sustaining fusion reactions for seconds rather than NIF's nanosecond pulses. In its final experiments before decommissioning in 2024, JET produced 69.26 megajoules over six seconds from 0.21 milligrams of fuel.
Then
Demonstrated sustained fusion reactions were possible, validating tokamak approach for ITER.
Now
Proved magnetic confinement could achieve significant fusion yields, though still below breakeven.
Why this matters now
JET's sustained burns contrast with NIF's instantaneous ignition, showing fusion has multiple viable paths with different trade-offs.
2 of 3
1943-1952
Manhattan Project and National Labs (1943-1945)
The U.S. established Los Alamos in 1943 to develop atomic weapons, achieving the first nuclear detonation in July 1945. After World War II ended, weapons laboratories pivoted to peacetime missions. Lawrence Livermore was founded in 1952 as a second nuclear design lab. Both facilities transitioned from building bombs to maintaining the arsenal without testing.
Then
Created institutional infrastructure for nuclear weapons development that won World War II.
Now
National labs became centers for extreme physics research, eventually hosting fusion experiments like NIF.
Why this matters now
Today's fusion breakthroughs happen at labs built for weapons, using facilities designed to study nuclear detonations without testing.
3 of 3
1973-2012
U.S. Solar Industry Rise and Fall (1970s-2000s)
America led solar photovoltaic development through the 1970s oil shocks, with government funding and Bell Labs innovations. By the 1990s, U.S. companies dominated manufacturing. Then China entered with massive subsidies, scaling production beyond U.S. capacity. By 2012, Chinese firms produced solar panels at costs American manufacturers couldn't match, driving most U.S. companies bankrupt.
Then
U.S. lost manufacturing dominance but retained technology leadership through research.
Now
China controls 80% of global solar manufacturing; U.S. became dependent on Chinese imports for renewable energy.
Why this matters now
Fusion risks the same trajectory—U.S. achieves scientific breakthrough but loses commercial race to countries that invest in scaling.
