NIF Achieves Fusion Ignition
For the first time in history, a fusion reaction produces more energy than the laser energy used to trigger it.
On December 5, 2022, the National Ignition Facility at Lawrence Livermore National Laboratory achieved fusion ignition—the fusion reaction produced 3.15 megajoules of energy from 2.05 MJ of laser input. This was the first time in human history that a controlled fusion reaction achieved net energy gain.
Open in interactive timeline →Key Numbers
- Energy In
- 2.05 MJ
- Energy Out
- 3.15 MJ
- Net Gain
- 1.5x (first ever)
Verified Facts
- The target capsule was a diamond-coated sphere smaller than a peppercorn, containing deuterium-tritium fuel.
- By April 2025, NIF achieved a record 8.6 MJ yield from a 2.08 MJ input—a target gain greater than 4x.
- NIF has replicated ignition multiple times since the 2022 breakthrough, systematizing the process.
Frequently Asked Questions
What was NIF Achieves Fusion Ignition?
On December 5, 2022, the National Ignition Facility at Lawrence Livermore National Laboratory achieved fusion ignition—the fusion reaction produced 3.15 megajoules of energy from 2.05 MJ of laser input. This was the first time in human history that a controlled fusion reaction achieved net energy gain.
When did NIF Achieves Fusion Ignition happen?
NIF Achieves Fusion Ignition: December 2022 CE.
Why does NIF Achieves Fusion Ignition matter?
For the first time in history, a fusion reaction produces more energy than the laser energy used to trigger it.
Sources & Further Reading
Cite This Page
AskHistoryAI. “NIF Achieves Fusion Ignition.” AskHistoryAI — Interactive Timeline of Everything. Updated 2026-09-11. https://askhistoryai.com/event/tech-nif-ignition/
Every fact on this page is checked against the published fact ledger and methodology; sources are listed above.