● Developing story
Fusion energy tracker: milestones toward fusion power
As of October 2026, NIF has reached ignition 11 times, every core component of the ITER machine is on site after the ninth vacuum-vessel sector arrived on 5 October, CFS says SPARC is almost 80 percent built and publicly targets Q>1 in 2027, and Helion has reported deuterium-tritium fusion, not yet independently verified, while building its Orion plant.[1][2][3][4][5] This page tracks dated milestones and the open questions that will decide when fusion power arrives.
What we know
- NIF has achieved ignition 11 times, most recently on 20 June 2026[1]
- ITER's 2024 baseline: research operation 2034, deuterium-tritium operation 2039[38]
- All nine ITER vacuum-vessel sectors were on site by 5 October 2026[2]
- ITER installed six of nine vacuum-vessel sector modules by 28 July 2026[12]
- CFS said SPARC was almost 80% complete in August 2026 and publicly targets Q>1 in 2027[4]
- Helion says its Orion plant is designed for initial operations in 2028[26]
- Private fusion firms raised $4.48bn in the year to July 2026[18]
- General Fusion became the first publicly listed fusion company on 13 July 2026[17]
- Germany launched a milestone-based fusion funding programme on 7 October 2026[19]
- The NRC's fusion rule was still at the proposed stage (Feb 2026)[39]
What we don't know yet
- When SPARC will produce its first plasma: CFS gives a 2027 Q>1 target but no dated first-plasma milestone
- Whether Helion's Polaris will demonstrate electricity production, and whether Orion will start in 2028
- When the NRC will issue its final fusion rule, and whether the fusion bills in Congress pass
- Whether any machine can breed more tritium than it burns in an integrated blanket
- Whether ITER can keep its 2034 research-operation date now that all core components are on site
- Whether hydrogen-boron results like ENN's can reach power-plant-relevant conditions
Story status
Where things stand
As of October 2026, fusion has passed several physics milestones, while the first power plants are still being built. Laser fusion at NIF reached ignition for the 11th time in June 2026.[1] Magnetic machines have run for over 1,000 seconds, and Wendelstein 7-X held a record triple product for 43 seconds.[6][7][8] The industry is in a build-out phase. CFS says SPARC is almost 80 percent complete, and Helion says it is building Orion.[3][9]
ITER passed a procurement landmark on 5 October 2026, when vacuum vessel sector #2, the ninth and last sector, was delivered. ITER said that with it, every component needed to complete the core machine is on site, while in-vessel components and plant systems are still to come.[2][10] Making the nine sectors was split between Europe, with five, and Korea, with four, and six years passed between the first delivery and the last.[11] Six of the nine sector modules were in the pit by 28 July 2026; module 9 is on the critical path, with sub-assembly due to finish by the end of November 2026 and transfer to the pit in early December.[12][13]
Money and policy
Private money kept arriving. CFS said on 30 July 2026 that a further $1 billion of equity took its total raised to $4 billion, which it called about 30 percent of all fusion capital raised to date, and the largest fusion round since its own $1.8 billion Series B in 2021.[14][15] Helion announced a $465 million Series G in June 2026 at a $15.5 billion valuation and later said it closed at $500 million.[16] General Fusion became the first publicly listed fusion company on 13 July 2026, entering the market with about $150 million in cash.[17] Across the industry, 56 companies reported $4.48 billion raised in the year to July 2026.[18]
Governments moved in parallel. Germany’s SPRIND launched a milestone-based programme on 7 October 2026, with 500 million euros by 2029 and total public funding intended to reach as much as 2.5 billion euros; companies that miss a milestone leave the programme.[19][20] Japan’s METI runs a similar milestone scheme worth about 60 billion yen over three years, and Helical Fusion was named a final candidate on 31 August 2026.[21] In the United States, a bipartisan House bill introduced on 24 September 2026 would create an Assistant Secretary of Fusion Energy and add $10 billion in appropriations, and a Senate permitting bill introduced on 30 September 2026 includes electricity-producing fusion machines.[22][23]
What to watch next
- SPARC first plasma and Q>1. CFS does not publish a first-plasma date; it targets Q>1 in 2027 and said in October 2026 that operations would start “in coming months”. This is the first big test of hts-fusion-magnets in a net-energy machine.[4][24]
- Polaris electricity. Helion says Polaris is designed to demonstrate electricity from fusion. Any result would bear on Orion’s 2028 date.[25][26]
- ITER’s last three modules. Module 9 moves to the pit in December 2026, leaving one sector in the sub-assembly tool.[13]
- Tritium breeding. ITER will host test blanket systems in two equatorial ports, and CFS joined UKAEA’s 220-million-pound LIBRTI programme in July 2026 to test breeding blankets.[27][28]
- NIF’s laser upgrade. The Enhanced Yield Capability project aims for 20 percent more laser energy and yields of 30 MJ and beyond.[29]
- China. BEST is under construction in Hefei and aims at net gain and an electricity demonstration around 2030; ENN reported hydrogen-boron reactions on EXL-50U in September 2026.[30][31]
- Japan. Helical Fusion plans preliminary power-on tests of Helix HARUKA in 2027 and of the completed integrated facility around 2030.[32]
- NRC final rule. The proposed byproduct-material framework for fusion machines closed for comment on 27 May 2026.[33]
- Stellarator Alpha. Proxima Fusion and IPP’s demonstrator in Garching moves from agreement toward design and construction.[34]
How this tracker is maintained
Company-only claims are marked “reported” until independently confirmed. Where a result was measured or co-published with a public laboratory, such as General Fusion’s LM26 temperature measurement with the UK Atomic Energy Authority, the entry says so.[35] Simulation and modelling deals are recorded as company announcements: CFS is building a SPARC digital twin with nvidia and Siemens, and leads a fusion project in the second phase of the US Department of Energy’s Genesis Mission.[36][37]
Background: iter, national-ignition-facility, commonwealth-fusion-systems, helion-energy, stellarator.
Timeline
21 confirmed11 reported
reported
General Fusion reports 1 keV electron temperature on LM26; CFS leads a DOE Genesis Mission project[58][35][37]
The LM26 Thomson scattering measurement was made with the UK Atomic Energy Authority and the paper was submitted for peer review.
confirmed
Germany launches a milestone-based fusion funding programme[19][20]
SPRIND will provide 500 million euros by 2029, with public funding intended to rise to as much as 2.5 billion euros.
confirmed
ITER takes delivery of the ninth and final vacuum vessel sector[2][10]
All core tokamak components are now on site; in-vessel components and plant systems are still to come.
confirmed
CFS orders more than 10,000 km of HTS tape from Fujikura; Senate permitting bill includes fusion[57][23]
reported
Helical Fusion says Helix HARUKA power-on tests will begin in 2027[32][56]
reported
China's ENN Group reports hydrogen-boron fusion reactions on EXL-50U[31]
Company-reported result, covered by a single outlet; hydrogen-boron fusion avoids the 14 MeV neutrons of D-T fuel but needs far higher temperatures.
reported
Bipartisan American Leadership in Fusion Act introduced in the US House[22]
reported
Helical Fusion named a final candidate in Japan's METI demonstration programme[21]
reported
CFS raises another $1bn, taking total capital to $4bn[14][15]
CFS said the round was the largest in fusion since its own $1.8bn Series B in 2021.
confirmed
ITER installs sixth of nine sector modules, ahead of schedule[12]
confirmed
General Fusion lists on Nasdaq; FIA reports record $4.48bn annual fusion funding[17][18][55]
confirmed
CFS becomes the first international partner in UKAEA's LIBRTI tritium-breeding programme[28]
confirmed
NIF achieves ignition for the 11th time[1]
reported
Helion says it received Washington licences for its fusion plant[9]
reported
CFS publishes five peer-reviewed ARC physics papers; Helion announces a $465m Series G[54][16]
reported
Helion awards $4m to 20 institutions under its HERCULES research programme[53]
confirmed
NRC proposes fusion machine rule; Proxima and partners agree to build Alpha stellarator[33][34]
reported
Helion reports measurable D-T fusion on Polaris[5]
Company-reported result, not yet independently verified; Helion reported a plasma temperature of 150 million degrees Celsius.
reported
CFS starts a SPARC digital twin with NVIDIA and Siemens[36]
confirmed
US DOE issues fusion roadmap targeting grid power by mid-2030s[51][52]
confirmed
Helion begins construction at Orion site in Malaga, Washington[50]
confirmed
Google agrees to buy 200 MW from CFS's ARC plant[49]
confirmed
Wendelstein 7-X holds record triple product for 43 seconds[8]
confirmed
NIF record yield of 8.6 MJ, target gain 4.13[48]
confirmed
France's WEST sets 1,337-second plasma duration record[7]
confirmed
China's EAST holds high-confinement plasma for 1,066 seconds[6]
confirmed
CFS picks Chesterfield County, Virginia, for 400 MW ARC plant[47]
confirmed
ITER presents new baseline with D-T operation in 2039[38][46]
confirmed
NIF shot yields about 5.2 MJ[45]
confirmed
JET's final D-T campaign announced to have set a 69 MJ record[43][44]
JET closed at the end of December 2023.
confirmed
NIF achieves first laboratory fusion ignition[42]
3.15 MJ of fusion energy from 2.05 MJ of laser energy.
confirmed
MIT and CFS HTS magnet reaches 20 tesla[40][41]
The SPARC model coil set a record for a large high-temperature superconducting magnet.
Questions readers ask
What is the latest NIF result?
NIF achieved ignition for the 11th time on 20 June 2026, with a yield of 7.9 megajoules and a target gain of about 3.8.[1]
How far along is ITER?
On 28 July 2026 ITER installed the sixth of nine vacuum-vessel sector modules, almost six months ahead of schedule, and on 5 October 2026 the ninth and final vacuum vessel sector arrived on site, completing delivery of the core tokamak components. Sub-assembly of sector module 9 is due to finish by the end of November 2026, with transfer to the pit in early December.[12][2][13]
When will SPARC produce its first plasma?
CFS has not published a dated first-plasma milestone. Its public target is net energy, Q>1, in 2027, and in a blog post current in October 2026 it said it would start operating SPARC in coming months.[4][24]
Has any private company shown net fusion energy?
None of the sources used here report one. CFS aims for Q>1 with SPARC, which CFS said was almost 80 percent complete in August 2026. Helion has reported D-T fusion on Polaris, not yet independently verified, and says Polaris is designed to demonstrate electricity production. General Fusion reported a 1 keV electron temperature on LM26 in October 2026, measured with the UK Atomic Energy Authority.[59][3][5][25][35]
Which governments announced new fusion money in 2026?
Germany launched a milestone-based programme on 7 October 2026 with 500 million euros by 2029 and up to 2.5 billion euros in total. Japan's METI runs a milestone programme with about 60 billion yen over the three years to 2028. In the United States, a bipartisan bill introduced on 24 September 2026 would add $10 billion in direct appropriations.[19][21][22]
Sources
Each numbered claim is a statement we checked against the sources listed with it. Status shows how well established it is.
- [1]
On 20 June 2026 NIF achieved ignition for the 11th time, with a yield of 7.9 megajoules and a target gain of about 3.8. confirmedas of 2026-10-10
- Achieving fusion ignition · Lawrence Livermore National Laboratory (retrieved 2026-10-10)
- [2]
On 5 October 2026 ITER took delivery of vacuum vessel sector confirmedas of 2026-10-05
- A remarkable chapter draws to a close · ITER Organization · 2026-10-05 (retrieved 2026-10-10)
- A remarkable chapter draws to a close · ITER Organization · 2026-10-05 (retrieved 2026-10-10)
- [3]
As of 5 August 2026 CFS said SPARC was almost 80 percent complete. reportedas of 2026-08-05
- SPARC progress, DOE Milestone approvals reflect CFS power plant maturity · Commonwealth Fusion Systems · 2026-08-05 (retrieved 2026-10-10)
- [4]
As of October 2026 Commonwealth Fusion Systems publicly targets 2027 for SPARC to produce more energy from fusion than is needed to power the process, the Q>1 threshold. reportedas of 2026-10-10· forecast
- SPARC: Proving commercial fusion energy is possible · Commonwealth Fusion Systems (retrieved 2026-10-10)
- [5]
On 13 February 2026 Helion said its Polaris prototype was the first privately developed fusion machine to demonstrate measurable deuterium-tritium fusion and had reached plasma temperatures of 150 million degrees Celsius; Helion also said it was the first company approved to possess and use tritium to demonstrate fusion energy production. reportedas of 2026-02-13
- Helion achieves new industry-first fusion energy milestones · Helion Energy · 2026-02-13 (retrieved 2026-10-10)
- Helion achieves new industry-first fusion energy milestones · Helion Energy · 2026-02-13 (retrieved 2026-10-10)
- [6]
On 20 January 2025 China's EAST tokamak sustained a high-confinement plasma for 1,066 seconds, the first to pass 1,000 seconds, at nearly 70 million degrees Celsius. confirmedas of 2026-10-10
- Achievements at EAST and WEST · ITER Organization (retrieved 2026-10-10)
- [7]
On 12 February 2025 France's WEST tokamak set a plasma-duration record of 1,337 seconds (about 22 minutes). confirmedas of 2026-10-10
- Achievements at EAST and WEST · ITER Organization (retrieved 2026-10-10)
- [8]
On 22 May 2025 Wendelstein 7-X sustained a record triple product for long plasma discharges for 43 seconds, surpassing tokamak results for comparable durations. confirmedas of 2026-10-10
- New performance records Wendelstein 7-X · Max Planck Institute for Plasma Physics (retrieved 2026-10-10)
- New performance records Wendelstein 7-X · Max Planck Institute for Plasma Physics (retrieved 2026-10-10)
- [9]
On 16 June 2026 Helion said the Washington State Department of Health had granted it radioactive materials and radioactive air emissions licences, making it the first company to hold the regulatory licences needed for a fusion power plant; by then Orion's assembly and office building was complete. reportedas of 2026-06-16
- Helion clears key regulatory milestone on the path to building and operating the world's first fusion power plant · Helion Energy · 2026-06-16 (retrieved 2026-10-10)
- Helion clears key regulatory milestone on the path to building and operating the world's first fusion power plant · Helion Energy · 2026-06-16 (retrieved 2026-10-10)
- [10]
ITER's project leadership said that with sector confirmedas of 2026-10-05
- A remarkable chapter draws to a close · ITER Organization · 2026-10-05 (retrieved 2026-10-10)
- A remarkable chapter draws to a close · ITER Organization · 2026-10-05 (retrieved 2026-10-10)
- [11]
ITER's nine vacuum vessel sectors were split between two members, five made in Europe and four in Korea, and six years passed between delivery of the first and the ninth sector. confirmedas of 2026-09-21
- Last ITER vacuum vessel sector travelling · ITER Organization · 2026-09-21 (retrieved 2026-10-10)
- Last ITER vacuum vessel sector travelling · ITER Organization · 2026-09-21 (retrieved 2026-10-10)
- [12]
On 28 July 2026 ITER installed the sixth of nine vacuum-vessel sector modules in the tokamak pit, putting two-thirds of the tokamak core in place almost six months ahead of schedule, and says it is on track to place the last module in 2027. confirmedas of 2026-07-29
- Two-thirds of ITER tokamak core now in place · ITER Organization · 2026-07-29 (retrieved 2026-10-10)
- [13]
As of September 2026 ITER was completing sub-assembly of sector module confirmedas of 2026-09-07
- A summer of substantial progress · ITER Organization · 2026-09-07 (retrieved 2026-10-10)
- A summer of substantial progress · ITER Organization · 2026-09-07 (retrieved 2026-10-10)
- [14]
On 30 July 2026 CFS said it had raised a further $1 billion of equity, bringing its total capital raised to $4 billion, which it described as about 30 percent of all capital raised by the fusion industry to date. reportedas of 2026-07-30
- Commonwealth Fusion Systems Raises Another $1 Billion, Bringing Total Capital Raised to $4 Billion · Commonwealth Fusion Systems · 2026-07-30 (retrieved 2026-10-10)
- Commonwealth Fusion Systems Raises Another $1 Billion, Bringing Total Capital Raised to $4 Billion · Commonwealth Fusion Systems · 2026-07-30 (retrieved 2026-10-10)
- [15]
CFS called its July 2026 round the single largest funding round among fusion energy companies worldwide since its $1.8 billion Series B in 2021. reportedas of 2026-07-30
- Commonwealth Fusion Systems Raises Another $1 Billion, Bringing Total Capital Raised to $4 Billion · Commonwealth Fusion Systems · 2026-07-30 (retrieved 2026-10-10)
- [16]
Helion announced a $465 million Series G on 4 June 2026 led by Thrive Capital at a $15.5 billion post-money valuation, bringing total investment in the company to $1.5 billion, and later said it closed the round at $500 million in September 2026. reportedas of 2026-09-30
- Helion Raises $465 Million Series G Funding Round to Meet Surging Global Demand for Power · Helion Energy · 2026-06-04 (retrieved 2026-10-10)
- Helion Raises $465 Million Series G Funding Round to Meet Surging Global Demand for Power · Helion Energy · 2026-06-04 (retrieved 2026-10-10)
- [17]
On 13 July 2026 General Fusion began trading on Nasdaq under the ticker GFUZ after completing a business combination with Spring Valley Acquisition Corp. III, entering the public markets with about $150 million in cash. confirmedas of 2026-07-13
- General Fusion Becomes First Publicly Listed Fusion Company · General Fusion · 2026-07-13 (retrieved 2026-10-10)
- General Fusion Becomes First Publicly Listed Fusion Company · General Fusion · 2026-07-13 (retrieved 2026-10-10)
- [18]
In the 12 months to July 2026, 56 fusion companies raised $4.48 billion, bringing total private fusion funding reported since 2021 to $14.24 billion. confirmedas of 2026-07-13
- Fusion industry attracts record annual funding of $4.48bn, raising total to $14.24bn · Fusion Industry Association · 2026-07-13 (retrieved 2026-10-10)
- [19]
On 7 October 2026 Germany's Federal Agency for Breakthrough Innovation (SPRIND) launched a milestone-based fusion programme for the research ministry, providing 500 million euros by 2029 with total public funding intended to rise to as much as 2.5 billion euros. confirmedas of 2026-10-07
- Germany's next step toward a fusion power plant: SPRIND launches a milestone program for nuclear fusion · SPRIND (German Federal Agency for Breakthrough Innovation) · 2026-10-07 (retrieved 2026-10-10)
- Germany Launches Fusion Milestone Program · Fusion Industry Association · 2026-10-07 (retrieved 2026-10-10)
- [20]
Under the German programme, independent external experts assess each company's technical and financial milestones, a participant that misses a milestone leaves the programme and loses funding, and the final milestone is a Technical Design Report for a fusion demonstration plant. confirmedas of 2026-10-07
- Germany's next step toward a fusion power plant: SPRIND launches a milestone program for nuclear fusion · SPRIND (German Federal Agency for Breakthrough Innovation) · 2026-10-07 (retrieved 2026-10-10)
- Germany's next step toward a fusion power plant: SPRIND launches a milestone program for nuclear fusion · SPRIND (German Federal Agency for Breakthrough Innovation) · 2026-10-07 (retrieved 2026-10-10)
- [21]
Japan's Ministry of Economy, Trade and Industry runs a milestone-based programme supporting private fusion demonstration across tokamak, stellarator and laser approaches, with about 60 billion yen of government support anticipated over the three years to 2028; Helical Fusion was named a final candidate on 31 August 2026. reportedas of 2026-08-31
- Helical Fusion Named a Final Candidate for Japan's METI Fusion Power Demonstration Program · Helical Fusion · 2026-08-31 (retrieved 2026-10-10)
- Helical Fusion Named a Final Candidate for Japan's METI Fusion Power Demonstration Program · Helical Fusion · 2026-08-31 (retrieved 2026-10-10)
- [22]
On 24 September 2026 a bipartisan group of US representatives introduced the American Leadership in Fusion Act, which would create a Senate-confirmed Assistant Secretary of Fusion Energy, codify the Department of Energy's Office of Fusion and add $10 billion in direct appropriations. reportedas of 2026-09-24
- Congress Introduces Bipartisan American Leadership in Fusion Act · Fusion Industry Association · 2026-09-24 (retrieved 2026-10-10)
- Congress Introduces Bipartisan American Leadership in Fusion Act · Fusion Industry Association · 2026-09-24 (retrieved 2026-10-10)
- [23]
A bipartisan permitting bill introduced in the US Senate on 30 September 2026, the American Affordability and Jobs Act of 2026, includes fusion machines that produce electricity among the projects it would treat on the same footing as other energy projects; a procedural vote was scheduled for 9 November 2026. reportedas of 2026-10-05
- Senators Introduce Bipartisan Permitting Act, Including Fusion · Fusion Industry Association · 2026-10-05 (retrieved 2026-10-10)
- Senators Introduce Bipartisan Permitting Act, Including Fusion · Fusion Industry Association · 2026-10-05 (retrieved 2026-10-10)
- [24]
In a company blog post current as of October 2026, CFS said it would start operating SPARC "in coming months" and that SPARC is designed to reach Q>10, so Q>1 is not an extremely difficult milestone; CFS has not published a dated first-plasma target. reportedas of 2026-10-10
- Why CFS is confident we will demonstrate net fusion energy: Q>1 · Commonwealth Fusion Systems (The Tokamak Times) (retrieved 2026-10-10)
- Why CFS is confident we will demonstrate net fusion energy: Q>1 · Commonwealth Fusion Systems (The Tokamak Times) (retrieved 2026-10-10)
- [25]
Helion says Polaris is designed to demonstrate electricity production from fusion. confirmedas of 2026-10-10
- Frequently asked questions · Helion Energy (retrieved 2026-10-10)
- [26]
Helion's first commercial plant, Orion, in Chelan County (Malaga), Washington, is designed to deliver at least 50 megawatts and begin initial operations in 2028. confirmedas of 2026-10-10
- Orion · Helion Energy (retrieved 2026-10-10)
- [27]
ITER will host test blanket systems in two equatorial ports, each with its own coolant, tritium extraction, purification and control systems, which ITER describes as an essential step toward the capabilities required for DEMO and future fusion power plants. confirmedas of 2026-09-14
- Turning tritium breeding into reality · ITER Organization · 2026-09-14 (retrieved 2026-10-10)
- Turning tritium breeding into reality · ITER Organization · 2026-09-14 (retrieved 2026-10-10)
- [28]
On 1 July 2026 the UK Atomic Energy Authority named CFS the first international company to join LIBRTI, a 220-million-pound programme aiming to demonstrate net tritium production, with CFS building the first test articles. confirmedas of 2026-07-01
- CFS named first international partner in UKAEA's LIBRTI program · Commonwealth Fusion Systems · 2026-07-01 (retrieved 2026-10-10)
- CFS named first international partner in UKAEA's LIBRTI program · Commonwealth Fusion Systems · 2026-07-01 (retrieved 2026-10-10)
- [29]
NIF's Enhanced Yield Capability project, beginning in 2026, will raise its laser energy by 20 percent, with the aim of fusion yields of 30 megajoules and beyond. confirmedas of 2026-03-12
- NIF and JLF user groups celebrate milestones and new capabilities · Lawrence Livermore National Laboratory · 2026-03-12 (retrieved 2026-10-10)
- [30]
China's Burning Plasma Experimental Superconducting Tokamak (BEST), under construction in Hefei, is designed to burn deuterium-tritium plasma, achieve net fusion power gain and demonstrate fusion electricity generation by around 2030. confirmedas of 2026-01-19· forecast
- China accelerates nuclear fusion engineering, targeting power generation demonstration by 2030 · Chinese Academy of Sciences · 2026-01-19 (retrieved 2026-10-10)
- Burning Plasma Experimental Superconducting Tokamak under construction in Hefei, China's Anhui · Chinese Academy of Sciences · 2026-04-17 (retrieved 2026-10-10)
- [31]
On 28 September 2026 ENN Group, based in Langfang, Hebei, said its EXL-50U spherical tokamak had achieved hydrogen-boron fusion reactions, which the company called the first time a commercial fusion company had done so on its own device. reportedas of 2026-09-28
- Chinese commercial reactor achieves nuclear fusion with clean hydrogen-boron fuel · South China Morning Post · 2026-09-28 (retrieved 2026-10-10)
- Chinese commercial reactor achieves nuclear fusion with clean hydrogen-boron fuel · South China Morning Post · 2026-09-28 (retrieved 2026-10-10)
- [32]
On 29 September 2026 the Japanese company Helical Fusion said it expected to begin preliminary power-on tests at its Helix HARUKA demonstration device in 2027, with power-on tests of the completed integrated facility around 2030. reportedas of 2026-09-29
- Japan's fusion energy startup to begin power-on tests at pilot reactor in 2027 · Reuters (syndicated by Cyprus Mail) · 2026-09-29 (retrieved 2026-10-10)
- Japan's fusion energy startup to begin power-on tests at pilot reactor in 2027 · Reuters (syndicated by Cyprus Mail) · 2026-09-29 (retrieved 2026-10-10)
- [33]
On 26 February 2026 the US Nuclear Regulatory Commission proposed amending its byproduct-material framework (10 CFR Part 30) to cover fusion machines, with technology-inclusive requirements, and took comments until 27 May 2026. confirmedas of 2026-10-10
- Regulatory Framework for Fusion Machines (proposed rule), 91 FR 9476 · U.S. Nuclear Regulatory Commission (Federal Register) · 2026-02-26 (retrieved 2026-10-10)
- [34]
On 26 February 2026 Proxima Fusion, the Bavarian state government, RWE and IPP signed a framework agreement to design, build and operate a demonstration stellarator, Alpha, in Garching, with a commercial plant, Stellaris, planned at the former Gundremmingen nuclear plant site. confirmedas of 2026-10-10
- IPP, Bavarian State Government, Proxima Fusion and RWE sign memorandum of understanding · Max Planck Institute for Plasma Physics · 2026-02-26 (retrieved 2026-10-10)
- [35]
General Fusion's October 2026 Thomson scattering measurement on LM26 was made in collaboration with the UK Atomic Energy Authority, and is described in a joint statement and a paper co-authored with UKAEA that was submitted for peer review. reportedas of 2026-10-08
- General Fusion achieves world-first 1 keV electron temperature milestone on its path to commercial fusion power · General Fusion · 2026-10-08 (retrieved 2026-10-10)
- General Fusion achieves world-first 1 keV electron temperature milestone on its path to commercial fusion power · General Fusion · 2026-10-08 · Second paragraph (retrieved 2026-10-10)
- [36]
CFS is building a digital twin of SPARC with NVIDIA and Siemens, announced on 6 January 2026, using NVIDIA Omniverse libraries and OpenUSD together with Siemens engineering software. reportedas of 2026-01-06
- Commonwealth Fusion Systems Accelerates Commercial Fusion With Siemens and NVIDIA, Leveraging AI-Powered Digital Twins · Commonwealth Fusion Systems · 2026-01-06 (retrieved 2026-10-10)
- Commonwealth Fusion Systems Accelerates Commercial Fusion With Siemens and NVIDIA, Leveraging AI-Powered Digital Twins · Commonwealth Fusion Systems · 2026-01-06 (retrieved 2026-10-10)
- [37]
On 8 October 2026 CFS said the US Department of Energy had selected it as the only private company leading a project in the second phase of the Genesis Mission, for an AI-enabled digital twin platform to optimise SPARC operations. reportedas of 2026-10-08
- Commonwealth Fusion Systems to Lead AI-Enabled Digital Twin Fusion Project in Second Phase of Genesis Mission · Commonwealth Fusion Systems · 2026-10-08 (retrieved 2026-10-10)
- Commonwealth Fusion Systems to Lead AI-Enabled Digital Twin Fusion Project in Second Phase of Genesis Mission · Commonwealth Fusion Systems · 2026-10-08 (retrieved 2026-10-10)
- [38]
ITER's 2024 baseline schedules the Start of Research Operation in 2034, deuterium-deuterium operation in 2035, full magnetic energy in 2036 and the start of deuterium-tritium operation in 2039, about four years later than the 2016 plan. confirmedas of 2026-10-10
- Press conference summary: updated ITER baseline (presentation by the Director-General) · ITER Organization · 2024-07-03 (retrieved 2026-10-10)
- [39]
The NRC's rulemaking status page lists the February 2026 proposed rule as its latest milestone and gives no final-rule date; no final rule had been published by October 2026. confirmedas of 2026-10-10
- Fusion machine rulemaking status · U.S. Nuclear Regulatory Commission · Status page; the live page blocks automated requests, so the wording was checked against the archived snapshot below (retrieved 2026-10-10)
- Fusion machine rulemaking status (web.archive.org snapshot, 16 June 2026) · U.S. Nuclear Regulatory Commission (via web.archive.org) · 2026-06-16 · Milestones list, latest entry as of the 16 June 2026 snapshot (retrieved 2026-10-10)
- [40]
On 5 September 2021 MIT and Commonwealth Fusion Systems ramped a large high-temperature superconducting magnet to 20 tesla, the strongest fusion magnet of its kind. confirmedas of 2026-10-10
- MIT-designed project achieves major advance toward fusion energy · MIT News · 2021-09-08 (retrieved 2026-10-10)
- MIT-designed project achieves major advance toward fusion energy · MIT News · 2021-09-08 (retrieved 2026-10-10)
- [41]
The 20-tesla magnet tested in 2021 was the SPARC Toroidal Field Model Coil, built by MIT's Plasma Science and Fusion Center and CFS between 2018 and 2021 to develop REBCO magnet technology for the SPARC tokamak. confirmedas of 2026-10-10
- The SPARC Toroidal Field Model Coil Program · arXiv (MIT Plasma Science and Fusion Center and Commonwealth Fusion Systems) (retrieved 2026-10-10)
- [42]
On 5 December 2022 the National Ignition Facility produced 3.15 megajoules of fusion energy from 2.05 megajoules of laser energy, the first laboratory fusion ignition. confirmedas of 2026-10-10
- Achieving fusion ignition · Lawrence Livermore National Laboratory (retrieved 2026-10-10)
- [43]
In its final deuterium-tritium experiments, announced on 8 February 2024, the Joint European Torus (JET) in the UK produced a record 69 megajoules of fusion energy over 5 seconds from 0.2 milligrams of fuel. confirmedas of 2026-10-10
- Fusion research facility JET's final tritium experiments yield new energy record · UK Atomic Energy Authority · 2024-02-08 (retrieved 2026-10-10)
- [44]
JET ended scientific operations at the end of December 2023 after more than four decades; it first used deuterium-tritium fuel in 1997. confirmedas of 2026-10-10
- Fusion research facility JET's final tritium experiments yield new energy record · UK Atomic Energy Authority · 2024-02-08 (retrieved 2026-10-10)
- [45]
On 12 February 2024 a NIF experiment produced an estimated 5.2 megajoules, more than double its 2.2 megajoules of laser input. confirmedas of 2026-10-10
- Achieving fusion ignition · Lawrence Livermore National Laboratory (retrieved 2026-10-10)
- [46]
ITER attributed the abandonment of its 2025 first-plasma date to Covid-19 disruption, first-of-a-kind components that proved harder than expected, quality problems requiring repairs, and over-optimistic planning. confirmedas of 2026-10-10
- Press conference summary: updated ITER baseline (presentation by the Director-General) · ITER Organization · 2024-07-03 (retrieved 2026-10-10)
- Press conference summary: updated ITER baseline (presentation by the Director-General) · ITER Organization · 2024-07-03 (retrieved 2026-10-10)
- Press conference summary: updated ITER baseline (presentation by the Director-General) · ITER Organization · 2024-07-03 (retrieved 2026-10-10)
- [47]
In December 2024 CFS chose the James River Industrial Center in Chesterfield County, Virginia, for ARC, a planned power plant of about 400 megawatts expected to deliver power to the grid in the early 2030s. confirmedas of 2026-10-10
- Commonwealth Fusion Systems to build world's first commercial fusion power plant in Virginia · Commonwealth Fusion Systems · 2024-12-17 (retrieved 2026-10-10)
- [48]
On 7 April 2025 NIF set records for yield and target gain, producing 8.6 megajoules (plus or minus 0.45) from 2.08 megajoules of laser energy, a target gain of 4.13. confirmedas of 2026-10-10
- Achieving fusion ignition · Lawrence Livermore National Laboratory (retrieved 2026-10-10)
- [49]
On 30 June 2025 Google agreed to buy 200 megawatts from CFS's ARC plant, which CFS called the largest fusion power purchase agreement to date, and made a new investment in the company. confirmedas of 2026-10-10
- Google deal helps propel CFS fusion energy onto the grid · Commonwealth Fusion Systems · 2025-06-30 (retrieved 2026-10-10)
- [50]
In July 2025 Helion began earthwork and construction at the Orion site in Malaga, Washington. confirmedas of 2026-10-10
- Starting to build the world's first fusion power plant in Malaga, WA · Helion Energy · 2025-07-22 (retrieved 2026-10-10)
- [51]
On 16 October 2025 the US Department of Energy issued a Fusion Science and Technology Roadmap aiming to deliver commercial fusion power to the grid by the mid-2030s. confirmedas of 2026-10-10
- Energy Department announces Fusion Science and Technology Roadmap to accelerate commercial fusion power · U.S. Department of Energy · 2025-10-16 (retrieved 2026-10-10)
- [52]
The DOE roadmap identifies research, materials and technology gaps to close for a fusion pilot plant across structural materials, plasma-facing components, confinement systems, fuel cycle, blankets, and plant engineering and integration. confirmedas of 2026-10-10
- Energy Department announces Fusion Science and Technology Roadmap to accelerate commercial fusion power · U.S. Department of Energy · 2025-10-16 (retrieved 2026-10-10)
- [53]
On 7 April 2026 Helion awarded $4 million under its HERCULES external research programme to 25 proposals across 20 institutions in the United States and United Kingdom, with more than $17 million committed through 2028. reportedas of 2026-04-07
- Helion Awards Funding to 20 Research Institutions to Accelerate Scaled Fusion Deployment · Helion Energy · 2026-04-07 (retrieved 2026-10-10)
- Helion Awards Funding to 20 Research Institutions to Accelerate Scaled Fusion Deployment · Helion Energy · 2026-04-07 (retrieved 2026-10-10)
- [54]
On 4 June 2026 CFS published five peer-reviewed physics basis papers for ARC, which it said give confidence that the plant can continuously deliver 400 megawatts of net electricity while identifying physics areas where SPARC data will reduce uncertainty. reportedas of 2026-06-04
- CFS publishes five peer-reviewed papers validating the physics of the ARC fusion power plant · Commonwealth Fusion Systems · 2026-06-04 (retrieved 2026-10-10)
- [55]
Large recent rounds include CFS's $863 million Series B2 (August 2025), Proxima Fusion's $518 million (July 2026), Helion's $465 million (June 2026) and Inertia Enterprises' $450 million Series A (February 2026). confirmedas of 2026-07-13
- Fusion industry attracts record annual funding of $4.48bn, raising total to $14.24bn · Fusion Industry Association · 2026-07-13 (retrieved 2026-10-10)
- [56]
Helix HARUKA is described as Japan's first integrated pilot reactor using the helical (stellarator) approach, built on the campus of the National Institute for Fusion Science in Toki, Gifu Prefecture, with more than 30 Japanese industrial partners. reportedas of 2026-09-29
- Japan's fusion energy startup to begin power-on tests at pilot reactor in 2027 · Reuters (syndicated by Cyprus Mail) · 2026-09-29 (retrieved 2026-10-10)
- Helical Fusion Named a Final Candidate for Japan's METI Fusion Power Demonstration Program · Helical Fusion · 2026-08-31 (retrieved 2026-10-10)
- [57]
On 30 September 2026 CFS agreed to buy more than 10,000 kilometres of HTS tape from Fujikura for its ARC power plants, starting with the Fall Line Fusion Power Station in Chesterfield County, Virginia; the companies called it the largest agreement of its kind, and Fujikura is expanding capacity to supply it. confirmedas of 2026-10-10
- Commonwealth Fusion Systems places largest single purchase order of HTS tape with Fujikura · Commonwealth Fusion Systems · 2026-09-30 (retrieved 2026-10-10)
- Commonwealth Fusion Systems places largest single purchase order of HTS tape with Fujikura · Commonwealth Fusion Systems · 2026-09-30 (retrieved 2026-10-10)
- [58]
On 8 October 2026 General Fusion said its LM26 magnetized target fusion machine had reached electron temperatures above 12 million degrees Celsius (more than 1 keV) by compressing plasma with a metal wall over milliseconds. reportedas of 2026-10-08
- General Fusion achieves world-first 1 keV electron temperature milestone on its path to commercial fusion power · General Fusion · 2026-10-08 (retrieved 2026-10-10)
- [59]
Commonwealth Fusion Systems says its SPARC tokamak in Devens, Massachusetts, is intended to be the first commercially relevant machine to demonstrate net fusion energy (Q>1). confirmedas of 2026-08-05
- SPARC progress, DOE Milestone approvals reflect CFS power plant maturity · Commonwealth Fusion Systems · 2026-08-05 (retrieved 2026-10-10)
- Technology · Commonwealth Fusion Systems (retrieved 2026-10-10)
Revision history (2)
Created Oct 10, 2026. Last reviewed by an editor on Oct 10, 2026. Next scheduled review: Jan 10, 2027.
Cite this page
"Fusion energy tracker: milestones toward fusion power." ContentLora, updated Oct 10, 2026. https://contentlora.com/events/fusion-energy-tracker
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