Draft, not yet released. In stewardship review. Not indexed until the first approved release.

Fusion is an experiment record and a fuel-cycle question

Part I describes systems and their couplings. It ranks no country or operator and assesses no authority.

7 min read2 figures1 table13 notesNR-XTECH-FUSION-GLOBAL-2026-BASELINE

Contents
  1. ·Edition home
  2. ·Executive summary
  3. 1Fusion is an experiment record and a fuel-cycle question
    1. 1.1 The questions this part answers
    2. 1.2 The argument
    3. 1.3 Twenty couplings between five systems
  4. 2Key findings
  5. 3Systems and sectors at baseline
  6. 4Risks and capability
  7. 5First-plant fuel and licence set the pace
  8. 6Readings from the other desks
  9. 7The 2027 agenda
  10. 8Systems in depth
  11. AMethodology
  12. BData appendix
  13. CReferences and record
  14. ·Complete edition, for print

1.1The questions this part answers

Key questions

  • Where is fusion risk concentrated?
  • Which couplings carry fusion shocks into other systems?
  • Which fusion capabilities hold under compound stress?
  • What must 2027 evidence measure first?

In this part

  • Narrative
  • Headline finding
  • Lead figure
  • Five footprint and governance chapters
  • Twelve-domain reading
  • Sector screens
  • Dependency matrix
  • Risk objects
  • Capability ladder
  • Scenario
  • Three lenses
  • Portfolio

1.2The argument

Fusion is usually discussed as a race to a first power plant. The 2026 evidence reads it as two things: a set of strong experimental records at research devices, and a set of infrastructure questions about fuel, materials, licensing and money that decide whether plants follow52014.

The experimental evidence is strong and narrow. NIF produced 8.6 MJ from 2.08 MJ of laser energy on target5. JET produced 69 MJ over about 5 seconds4. WEST held a plasma for 1,337 seconds1. Each is a different quantity on a different device, and none is electricity to a grid.

The schedule evidence is plain. ITER plans deuterium-tritium operation in 20397. Companies state plants for 2028 and the early 2030s2423. The US roadmap targets power by the mid-2030s12. These are plans, and the baselines of public projects have moved before25.

The fuel cycle is the least measured part. Tritium is available from heavy-water reactors only, and the amount free for fusion in 2055 ranges from 0 to 27.7 kg20. Lithium-6 supply is effectively zero according to one presentation21. Licensing is moving: the US rule is proposed14.

Figure 1.1How long have fusion plasmas been held? Seconds

Plasma duration in tokamaks rose from 403 seconds to 1,337 seconds in two years. Duration is not fusion power: WEST used 2 MW of heating in hydrogen, and the devices differ in regime and size12.

ItemBar, scaled to the largest valueValue
EAST, high confinement, 2023403
EAST, high confinement, January 20251066
WEST, February 20251337

Source: as cited in the note to this figure. Year 2025.

Figure ID FIG-XTECH-FUSION-GLOBAL-2026-BASELINE-01-003

1,337seconds

WEST, 20251

1,066seconds

EAST, high confinement, 20252

403seconds

EAST, 20232

2.6GJ

energy injected and extracted in the WEST pulse1

1.3Twenty couplings between five systems

The fusion-centred matrix types the twenty couplings between the five core systems, read for their fusion content. Strengths are Nexus estimates (ESTIMATED) from the cited evidence and analogue events; they set the graph that 2027 evidence will test.

Figure 1.2Couplings between the five systems

Each line is one coupling from one system to another, drawn by the strength the edition assigns. Strengths are Nexus estimates from the cited evidence and analogue events.

  • Strong
  • Moderate
  • Weak

Source: this edition’s coupling matrix (Table 1.1); status Estimated.

Table 1.1Coupling matrix: from the row system to the column system
From, toWATENEFOOHLTBIO
WAT Water·WEAK
plant cooling		WEAK
no documented link		WEAK
no documented link		WEAK
no documented link
ENE EnergyWEAK
cooling load		·WEAK
no documented link		WEAK
no documented link		WEAK
no documented link
FOO FoodWEAK
no documented link		WEAK
no documented link		·WEAK
no documented link		WEAK
no documented link
HLT HealthWEAK
workforce		WEAK
workforce		WEAK
no documented link		·WEAK
no documented link
BIO BiodiversityWEAK
no documented link		WEAK
no documented link		WEAK
no documented link		WEAK
no documented link		·
Strength: strong, moderate or weak; a Nexus estimate (status Estimated) from cited evidence and analogue events. The scale is defined in Annex A.

Transmission paths

  1. 01

    MIN → INF

    A tritium or lithium-6 shortfall delays first plants.

    Inferred tritium and lithium analyses2021

  2. 02

    FIN → INF

    Private and public funding pay for devices and test facilities.

    Reported USD 4.48 billion, 202610

  3. 03

    GOV → INF

    Licensing rules set the route and timing for first plants.

    Reported US proposed rule14

  4. 04

    INF → ENE

    A successful plant would add firm power; none is documented.

    Inferred company statements2423

  5. 05

    ENE → INF

    Facility electricity limits what a shot or pulse means.

    Inferred NIF and WEST reports51

Notes

Numbers are the edition’s reference numbers, so a note reads the same in every chapter. The full list, with every source and its licence, is in Annex C. Annex C, references

  1. 5Lawrence Livermore National Laboratory (ed.), National Ignition Facility 2025 (annual report page; 8.6 MJ on 7 April 2025 from 2.08 MJ delivered, target gain 4.13; refurbishment and enhanced yield capability to 2.6 MJ). Lawrence Livermore National Laboratory, Livermore. Observation year 2025. Accessed 2026-11-03.back
  2. 20Coleman, M. and Kovari, M., Global supply of tritium for fusion R and D from heavy water reactors (conference paper, UK Atomic Energy Authority; abstract and introduction read from the PDF; 0 to 27.7 kg available in 2055 across scenarios; 7.4 kg for a demonstration reactor in 2055 in one case). UK Atomic Energy Authority, Abingdon. Observation year 2018. Accessed 2026-11-03.back
  3. 14US Nuclear Regulatory Commission (ed.), Federal Register notice of 26 February 2026, proposed rule on regulatory framework for fusion machines (10 CFR part 30; comments due 27 May 2026; the first 100,000 of 168,363 characters were read). Office of the Federal Register, Washington. Observation year 2026. Accessed 2026-11-03.back
  4. 4World Nuclear News (ed.), New world record set in JET final fusion experiments (news report of 9 February 2024; 69 MJ over 5 seconds from 0.2 milligrams of fuel; 59 MJ in 2021). World Nuclear Association, London. Observation year 2024. Accessed 2026-11-03.back
  5. 1CEA IRFM (ed.), WEST sets a new plasma duration record (news page; plasma 61299, 12 February 2025, 1,337 seconds, 2 MW lower hybrid heating, 2.6 GJ injected and extracted). Commissariat a l energie atomique et aux energies alternatives, Cadarache. Observation year 2025. Accessed 2026-11-03.back
  6. 7ITER Organization (ed.), ITER in a few lines (project page; baseline reviewed by the ITER Council in November 2024; start of research operation 2034; deuterium-tritium operation 2039; Q of 10, 500 MW from 50 MW). ITER Organization, Saint-Paul-lez-Durance. Observation year 2026. Accessed 2026-11-03.back
  7. 24Helion (ed.), Orion, the first fusion power plant (company page; Malaga, Washington; construction from 2025; initial operations stated for 2028; Microsoft agreement for 50 MW; a vendor announcement, weak evidence). Helion Energy, Everett. Observation year 2026. Accessed 2026-11-03.back
  8. 23Commonwealth Fusion Systems and Eni (eds.), Eni and CFS sign over USD 1 billion power purchase agreement (joint company release of 22 September 2025; 400 MW ARC plant in Chesterfield County, Virginia; grid connection in the early 2030s; a vendor announcement, weak evidence). Commonwealth Fusion Systems, Devens. Observation year 2025. Accessed 2026-11-03.back
  9. 12US Department of Energy (ed.), Energy Department announces Fusion Science and Technology Roadmap to accelerate commercial fusion power (announcement of 16 October 2025; Build-Innovate-Grow; power on the grid by the mid-2030s; no funding commitment). US Department of Energy, Washington. Observation year 2025. Accessed 2026-11-03.back
  10. 25Physics Today (ed.), ITER costs are pinned down with caveats (news report on the 2016 baseline review; review committee chaired by A. Wagner; estimate without contingencies). American Institute of Physics, College Park. Observation year 2016. Accessed 2026-11-03.back
  11. 21Pearson, R.J., The availability and supply of critical natural resources for the realisation of a fusion pilot plant: fuels for fusion (presentation to the US Department of Energy fusion workshop, 1 to 3 June 2022; lithium-6 is 7.4% of natural lithium; blankets need 30 to 90%; supply effectively zero; a company presentation, weak evidence). Kyoto Fusioneering, London. Observation year 2022. Accessed 2026-11-03.back
  12. 2Physics World (ed.), China experimental advanced superconducting tokamak smashes fusion confinement record (news report; EAST 1066 seconds in high confinement, January 2025; earlier 403 seconds in 2023). IOP Publishing, Bristol. Observation year 2025. Accessed 2026-11-03.back
  13. 10World Nuclear News (ed.), Fusion industry raised USD4.5 billion in past year, report says (14 July 2026; Fusion Industry Association 2026 survey: USD 4.48 billion in 12 months, USD 14.24 billion cumulative, 56 companies; an industry survey, weak evidence). World Nuclear Association, London. Observation year 2026. Accessed 2026-11-03.back

Cite this chapter

Valadbaygi, S. (Ed.). (2026). Chapter 1: Fusion is an experiment record and a fuel-cycle question. In Exponential Technology Report 2026: Fusion and Frontier Energy (Baseline Edition 2026, Report No. NR-XTECH-FUSION-GLOBAL-2026-BASELINE) [Draft under review]. The Global Centre for Risk and Innovation (GCRI).

Every citation form of the whole report, BibTeX and RIS included, is on the edition home. Cite this report

ReportsContribute

Send evidence or a correction on Fusion and Frontier Energy.

Reports is the Consortium’s quarterly publication, written by six desks. This page sits with the Global Centre for Risk and Innovation (GCRI) Systems Evidence desk. What you know about this subject can become evidence, a case or a correction in the next edition, credited to you and published under CC BY 4.0 where it is your own work. Sent to the wrong desk, it is forwarded, not refused.

GCRI Systems Evidence deskExponential Technology

Never send personal data, sensitive infrastructure detail or anything you have no right to share. A contribution is reviewed before use; sending it confers no authorship or editorial rights, and sponsorship never buys a finding.

CC BY 4.0 Free to read. Text and figures: CC BY 4.0. Data: CC0 1.0. Authors keep copyright. Published by GCRI Canada.

Sector signature

The sectors behind Fusion and Frontier Energy.

A reading aid: the sectors the findings run through and how strongly they depend on each other.

Select corners · hover lines6 / 15 relations

Signature

Energy and its partners

Energy gives power for transport and telecoms to infrastructure (0.8), pumping and treatment to water (0.5) and fertiliser, machinery and cold chains to food (0.5).

W · E · I · F · H · B

Sectors
4 of 6
Relations
6 of 15
Coupling
0.46 share of total

Strongest relations in play

  • Energy → Infrastructure · power for transport and telecoms0.8
  • Water → Energy · cooling water and hydropower0.6
  • Water → Food · irrigation0.8
  • Infrastructure → Water · pipes, dams and treatment works0.6
Teaching values for a typical city-region, not measurements for any place. Coupling is the summed strength of the relations in play, as a share of all fifteen.
The Global Centre for Risk and Innovation

Science · evidence · measurement

Not for profit

Our articles, maps and twins are free to read and free to republish. Readers and partners keep it that way.

Partner with us

Who funds us

GCRI is a not-for-profit institution. To ask who funds a piece of work, use the funding questions form.

Independence

Editors and the expert reviewers named on each article decide what we publish. Funders and partners do not review or approve articles before publication.

Corrections policy

Licence

Articles: CC BY 4.0. Figures, maps, twins and data: CC BY 4.0. Other uses: ask through the permissions form.

Privacy choices