Helium: geopolitics beneath the wafer

Washington’s 23 October designation places an industrial gas at the centre of technological sovereignty. Understanding its significance means following helium from the reservoir to the silicon wafer, then tracing what happens to it after use.

Documentary research completed on 26 October 2026. Production figures refer to 2025; announcements and project schedules are dated in the text.

Inside an etching chamber, plasma acts on the surface of a silicon wafer, adding heat as it works. A narrow gap beneath the wafer, supplied with helium, helps transfer that heat to a cooled support. The wafer’s temperature, and the way it varies from centre to edge, are among the parameters the equipment must control. This is where an industrial dependency now under discussion in Washington begins. 3 4

On 23 October, the US Department of Energy, or DOE, announced helium’s designation as a critical material. It cited the gas’s role in semiconductors and other industries, the risk of supply disruption, and constraints on refining capacity and project permitting in the United States. The official notice gives this vulnerability an administrative form. 1 2

The documents point to a question more precise than the presence of helium underground: how much gas meeting the required specifications can reach a factory, at what rate, and with what alternatives if a route closes? Answering it takes us across several industries. Helium must be extracted, separated, purified, transported and distributed, while the manufacturing process it serves must remain stable. Each stage has its own facilities, contracts and timetable. A policy decision can change the terms of investment; its effect on deliveries depends on the supply chain that is actually built.

Beneath the wafer, a question of heat

A wafer is the thin disc on which chips are manufactured. During some etching operations, an electrostatic chuck (ESC) holds it in place. Contact between two solid surfaces leaves gaps through which heat passes poorly. Introducing a suitable gas into this interface improves heat transfer to the chuck. A liquid circuit then carries the heat away inside the support. Experimental work by Qorvo and a patent publication from Applied Materials describe these functions, showing how gas pressure and the conditions under which the wafer is held also matter. 3 4

Helium combines two useful qualities for this task: high thermal conductivity and very low chemical reactivity under the operating conditions described. At 300 kelvin, or about 27 °C, the NIST reference table gives helium a thermal conductivity of 155.7 mW·m⁻¹·K⁻¹, compared with 25.9 for nitrogen and 17.7 for argon, in the dilute-gas limit. The difference helps explain the material’s appeal. A machine’s performance also depends on pressure, the surfaces involved and the geometry of their interface. These physical properties help explain an engineering choice; they cannot be used to multiply production throughput directly by six or nine. 5

Method and scope

Schematic cross-section: heat, gaseous helium and liquid coolant follow distinct paths. Dimensions are enlarged for explanation. Zero-based linear bars show dilute-gas thermal conductivity at 300 K, in mW·m⁻¹·K⁻¹. Conductivity ratios do not measure a tool’s cooling speed or wafer throughput.

Changing the gas therefore requires an assessment of the manufacturing process as a whole. HORIBA offers a backside cooling control system compatible with both helium and argon. Its documentation shows that control equipment is designed to work with several gases. For any particular line, the resulting temperature, stability, impurities and product characteristics still need to be checked. 6

As early as 2021, Lam Research explained that less effective cooling can lengthen a process step and reduce the number of wafers handled in a given period. The economic trade-off is tangible: saving gas can cost machine time. The right balance depends on the process recipe, equipment and manufacturing yield. 7

The connection to artificial intelligence runs through component manufacturing. Depending on inventories and alternatives already qualified for use, a disruption to gas supplies could affect chip production and delivery schedules. Quantifying that conditional relationship would require information about each factory’s consumption, available inventories and commitments.

Two large producers, several dependencies

The latest annual USGS assessment provides a baseline. It estimates 2025 production at 81 million cubic metres in the United States, 63 million in Qatar and 18 million in Russia, against a rounded world total of 190 million. The United States and Qatar together account for approximately 76% of that total. These are gas volumes expressed at 15 °C and 101.325 kPa. Volumes quoted for liquid helium must be interpreted with their own units and density. 8

Method and scope

USGS estimates for 2025, in million cubic metres of gas at 15 °C and 101.325 kPa. Calculated share: (81 + 63) / 190 × 100 ≈ 76%. The published world total is rounded; country estimates remain as published. The US figure includes helium extracted in Canada and purified in the United States. South Africa is below 0.5, which is not treated as zero. These figures do not measure supply available in October 2026.

Geographical concentration is high, although the statistical categories require care. The US figure includes helium extracted in Canada and purified in the United States. The American figure therefore also reflects a purification stage, distinguishing this table from a map of geological origins alone. The world total is rounded, and the published national figures do not add up exactly to 190 million. The chart retains the values as published. 8

These 2025 volumes establish each region’s weight before the disruptions of 2026. Measuring the supply available on a particular date would also require information on shutdowns, restarts, stock withdrawals and usable capacity. The documentary research for this article does not provide that real-time global balance.

New supply is also coming through. On 26 October, ASP Isotopes said Tetra4, Renergen’s subsidiary, had completed commissioning and reached stable liquid-helium production at South Africa’s Virginia project. Helium is accumulating in storage ahead of first deliveries; reaching phase 1 nameplate capacity remains a company target for the fourth quarter of 2026. 21

Qatar illustrates how an energy shock can reach a material used in electronics. Its helium output depends on natural gas processing and liquefied natural gas, or LNG, facilities. In its March review, Japan’s JOGMEC agency reports the shutdown announced by QatarEnergy on 2 March following attacks on its facilities, then the damage assessment published on 19 March. For helium, that assessment attributed to the damage an annual loss equivalent to approximately 14% of Qatari exports. The figure refers to Qatar’s exports, and the estimate dates from March. 9 10

The distinction between the initial shutdown and lasting damage to capacity is essential to understanding the crisis. A single episode can interrupt a broad set of flows, then allow some equipment to restart while other facilities await repairs. The 14% figure describes the announced damage assessment; operating rates in October would require a separate measurement. We found no recent public series that would allow Qatar’s helium production to be quantified precisely at the research cut-off date.

For a chipmaker, using several commercial suppliers provides flexibility. The analysis becomes more useful when it follows those suppliers back to their physical sources: two contracts can depend on the same processing centre, container fleet or route. Diversification then becomes a measure of how independently the material can travel along its different supply paths.

From the reservoir to usable deliveries

Linde describes industrial helium production as a sequence of recovery, purification and, depending on the delivery method, liquefaction. These processes must remove the gas’s other constituents, achieve the required quality and prepare it for transport in suitable equipment. The facilities turn a geological resource into an industrial product. 11

Specifications still matter at the destination. Air Liquide’s Taiwanese catalogue offers an electronics grade of helium with a purity of at least 99.9999%. That figure describes the supplier’s product. Each process has its own requirements, including limits on the types and quantities of residual impurities. At a fabrication plant, whether operated by an integrated manufacturer or a foundry, receiving gas also entails obtaining traceability records and having the means to check that it meets specifications. 12

Method and scope

Generic industrial route; the two illustrated pieces of equipment are independent examples. HELICS holding time is stated as more than 48 days, at a maximum pressure of 5.7 bar and ambient temperature of 30 °C. Beaumont cavern capacity is more than 3 billion cubic feet; current inventory is unknown. Neither capacity nor cryogenic holding time measures a fab’s supply autonomy.

Transporting liquid helium adds a thermal constraint. Even a well-insulated container exchanges heat with its surroundings; its design and operating conditions determine how long it can hold its contents. For its HELICS containers, Linde specifies more than 48 days, with a maximum pressure of 5.7 bar, based on an ambient temperature of 30 °C. This specification applies to a particular piece of equipment. How long a factory can keep operating depends on its usable inventory, consumption, recovered gas and forthcoming deliveries. 13

At a different scale, helium can be stored underground. In July 2025, Linde announced the commissioning of a cavern in Beaumont, Texas, with capacity for more than three billion cubic feet of helium. Its actual inventory at the time of this research remains unknown. To serve a customer, stored gas must still be withdrawn, processed if necessary and transported using the equipment available. 14

The distinction between quantity stored and deliverable flow helps explain the risk. A large reservoir can cushion a disruption if downstream facilities can turn its contents into deliveries quickly enough. The same volume provides different levels of protection depending on its location, condition, access rights and transport options. A physical inventory becomes meaningful when it is matched with a schedule for getting the gas out.

Bringing the gas back into the loop

Recovery changes this geography at factory level. Some of the helium used can enter a collection circuit, be purified and return to the process. Samsung says that, as of 2025, such a system was in use on one production line, saving approximately 4.7 tonnes a year. This is a company-reported result documenting an industrial application. The published information leaves open both the line’s total consumption and the proportion of the group’s operations covered by recovery. 15

Method and scope

Generic collection, treatment and quality-control loop, retaining rejected streams and external make-up gas. Arrows encode no measured flow rate. Samsung’s 4.7-tonne annual saving refers to one line in the page describing 2025. The patent diagram does not reconstruct that installation; the separate rate stated in the earnings-call script is discussed in the text.

In the script for its 29 January 2026 earnings call, Samsung also reports a reuse rate of around 19% on “select production lines”, alongside annual savings of about 4.7 tonnes. This is a separate company disclosure. Its scope and denominator are insufficiently detailed to infer a group-wide rate or a separator’s efficiency. 20

Samsung’s application published in April 2025, granted as US12722973B2 on 1 September 2026, describes an architecture combining exhaust-stream sorting, treatment tailored to contaminants, compression, separation, purification and analysis before the gas returns to production. It helps explain the operations involved. The patent describes a technical solution; the configuration used on the line mentioned in the sustainability report requires separate documentation. 16

The useful calculation has three stages. First, what fraction of the gas used reaches a stream from which it can be recovered? Second, what fraction of the helium in that stream is retained through treatment? Finally, how much meets the required quality and actually returns to the process? These questions explain why a separator’s recovery rate and the reduction in a factory’s gas purchases are different measures.

With consumption and inventory held constant, external purchases must cover the requirement remaining after helium of the right quality has been returned. This is a straightforward material balance. Applying it requires measurements on the ground: mixed streams, maintenance operations, losses, quality control and system availability all matter. A company can improve its supply security by increasing that return flow, even if its process consumption changes little.

Recovery consequently has an industrial value extending beyond the cost of the gas saved. It can reduce the volume exposed to external deliveries. That benefit must be weighed against installation, treatment and control costs, as well as the manufacturing risk posed by inconsistent quality. The public documents assembled here establish the mechanism and an example of its use; a detailed economic assessment still has to be made for each site.

From designation to industrial capacity

The DOE designation enters this wider set of constraints. The notice was signed on 21 October, announced publicly on 23 October, and made available for public inspection on 26 October, ahead of publication in the Federal Register. At the research cut-off, formal publication was scheduled for 27 October. The legal term is critical material, under the Energy Act of 2020. The Department of the Interior’s list of critical minerals follows a separate procedure. 2 18

For a project, classification, eligibility for a programme, a financing decision and commissioning are separate stages. The DOE’s Title 17 guidance sets out several routes and their conditions. A project must identify the appropriate route, undergo assessment and secure a decision. The designation’s financial effect will therefore be judged by the projects actually supported and the terms they receive. 18

A document predating the announcement makes this timetable tangible. In an environmental notice dated 21 August 2026, the DOE described Dry Piney, a Wyoming project proposed by Blue Spruce Operating. The company had requested federal financial assistance for facilities combining helium production, natural gas processing and acid-gas sequestration. The proposed schedule envisaged construction from the third quarter of 2026 to the third quarter of 2029. The notice establishes that an application and a project exist; a financing decision and actual construction progress require further evidence. 17

Method and scope

October dates distinguish signature, announcement, public inspection and planned formal publication. As of 26 October, publication on the 27th remains scheduled. The Dry Piney construction window from the third quarter of 2026 to the third quarter of 2029 is prospective. The notice establishes a funding application, without establishing an award or actual construction start.

The comparison puts the scope of industrial policy into perspective. Underground resources, processing facilities, permits, capital and markets must come together in a viable project. Official recognition can help direct attention and certain policy instruments towards that chain. The physical benefit arrives with commissioned equipment and the gas it can deliver.

The American context also raises a question of governance. In June 2024, the Bureau of Land Management announced the completion of the sale of the Federal Helium System to Messer, under the framework established by the 2013 law. That transfer and the 2026 designation are two different instruments: ownership of a set of assets, and recognition of a strategic dependency. Assessing their combined effect requires examination of capacity, access conditions and subsequent investment. The sequence of dates alone cannot establish that the sale caused the disruptions of 2026. 19

Sovereignty is measured at the factory gate

The documents bring the supply chain into focus from the perspective of the machine consuming the gas. The first question concerns its use: which process step depends on helium, at what quality, and with what alternative already validated? The next concerns access: which facilities and transport systems underpin the contracts? Then come the site’s own options, from usable inventory and recovery to changes in the manufacturing process.

This approach also changes how capacity announcements should be assessed. A promising deposit becomes relevant to manufacturers when its project specifies the processing, delivery arrangements, customers and delivery dates. Storage contributes to security when the available gas and withdrawal rate are known. A recovery system is judged by the volume returned to the process at the required quality. The common thread is the conversion of potential into a measurable industrial service.

Helium reveals a tangible dimension of technological power. Behind a chip’s performance lie a temperature to maintain, a gas to qualify and a route to secure. The US decision of 23 October makes that dependency more visible. What follows will be measured in projects financed, equipment installed, gas reused and continuity of supply to factories.

Limitations

This investigation draws on public documents consulted on 26 October 2026. They include institutional statistics, administrative texts, technical research and company statements; no interviews or factory visits were conducted. Company-reported results remain attributed to their authors.

The USGS figures are estimates for 2025, with conventions and rounding explained in the text and chart. The official chapter was downloaded directly and its table visually checked. For Qatar, the article distinguishes the March events and damage assessment from actual flows in October, which remain insufficiently documented.

Fab inventories, contractual prices, consumption by process recipe and supplier qualification times remain largely beyond the available public record. This research therefore cannot quantify a current global deficit, establish when a factory might stop, or calculate a helium-related increase in chip prices. The process diagrams are explanatory syntheses; their dimensions and arrows do not represent measured flows. The Dry Piney schedule is provisional, and the final version of the Federal Register notice will need to be checked after its announced publication date of 27 October.

Further reading

Our earlier investigation into helium logistics examines containers, inventories and routes. The semiconductor stack of constraints and TSMC’s electricity exposure place this dependence alongside other physical limits. The GM–VAC magnet project offers a comparison of the steps between strategic priority, commercial contracts and industrial capacity.

Sources

All sources were checked on 26 October 2026; dates distinguish publication, observation period and document version.

1. [1] U.S. Department of Energy. Energy Department Designates Helium as Critical Material to Strengthen American Manufacturing and Supply Chain Security. 23 October 2026
   Source document
   Designation announcement and the DOE’s stated rationale: uses, risks, refining and permitting. Locator : Announcement dated 23 October 2026; paragraphs on semiconductor uses, refining and permitting constraints.
2. [2] U.S. Department of Energy / Federal Register. Critical Material List; Addition of Helium : document 2026-21884. Public inspection: 26 October 2026; scheduled publication: 27 October 2026
   Source document · DOE PDF, 5 pages
   Designation, statutory basis and chronology; public-inspection version available at the research cutoff. Locator : PDF pp. 1–3: determination; p. 3: substantive signature dated 21 October; p. 4: liaison signature 23 October and filing/publication dates.
3. [3] Saman Parizi et al. / Qorvo / CS MANTECH. Characterization of Electrostatic Chuck (ESC) Performance with Changes in Wafer Warpage and Backside Cooling Conditions. Conference: 9–12 May 2022; exact online posting date unknown
   Source document
   Backside cooling, clamping and gas pressure. A 150 mm-wafer experiment; no universal operating flow is inferred. Locator : PDF p. 1 (printed p. 265): abstract, introduction, Fig. 1 and experimental protocol; pp. 1–2 on clamping and backside-gas pressure.
4. [4] Applied Materials / U.S. patent application. US20170352568A1 : High power electrostatic chuck with aperture-reducing plug in a gas hole. 7 December 2017
   Source document · Granted patent US10770270B2, 8 September 2020
   Heat-transfer architecture and separate gas/coolant paths; a patent used to explain the mechanism. Locator : Description associated with Figs. 1–3: top plate, gas hole, cooling plate and coolant channels; publication-date field.
5. [5] Marcia L. Huber / NIST. CRC Handbook of Chemistry and Physics, 105th edition : Thermal Conductivity of Gases and Refrigerants. 21 June 2024 (NIST bibliographic record)
   Source document · NIST bibliographic record
   Conductivities at 300 K: He 155.7; N₂ 25.9; Ar 17.7 mW·m⁻¹·K⁻¹. Gas properties are distinct from tool performance. Locator : PDF p. 1: conditions; p. 2, Table 1: He, N₂ and Ar, column 300 K, low-pressure limiting values.
6. [6] HORIBA. GR-500 Series : Wafer Back Side Cooling System. Undated manufacturer page; accessed 26 October 2026
   Source document
   Stated controller compatibility with He and Ar; a particular process recipe requires separate qualification. Locator : First product-description paragraph: pressure control of helium and argon for wafer backside temperature control.
7. [7] Terry Powell / Lam Research. Using Less Helium Is Good Business. 19 July 2021
   Source document
   Trade-off between cooling, process-step duration and throughput. Historical market and recycling assertions are excluded. Locator : Section “Lam Focusing on Helium Reduction”, paragraph on longer cooling steps and throughput.
8. [8] U.S. Geological Survey. Mineral Commodity Summaries 2026: Helium and Rare Gases, pp. 96–97. February 2026; statistical year 2025, estimated
   Source document · Official report DOI
   Official 2025 output estimates, units, conventions and rounding. Original PDF downloaded and table visually checked. Locator : Helium chapter, printed pp. 96–97: World Production and Reserves, 2025 e column; heading and footnote 1 for units; footnote 3 for Canada/US purification.
9. [9] QatarEnergy. Statement on damage to Ras Laffan production facilities. 19 March 2026
   Source document
   Identified original damage statement; figures checked in JOGMEC’s institutional reproduction. Locator : Statement indexed under ItemId 3897; associated-products loss item for helium. Full body unavailable in direct rendering; reproduced by source 10.
10. [10] JOGMEC. March 2026 : Natural gas and LNG related information. March 2026 issue; exact posting date unknown
    Source document
    Early-March shutdown and 19 March damage assessment: about 14 % of Qatar’s helium exports affected by damage. Locator : Section “Other regions”: QatarEnergy entries dated 2 March and 19 March; associated-products loss list, helium 309.54 MCFA/about 14 % of Qatar exports.
11. [11] Linde Engineering. Helium Recovery & Liquefaction Plants. Undated technical page; accessed 26 October 2026
    Source document
    Recovery from natural gas, purification, liquefaction and industrial conditioning. Locator : Paragraphs beginning “If helium is also present…” and “We offer field-proven processes…”; recovery, PSA purification and liquefaction.
12. [12] Air Liquide Taiwan. Industrial Gas : Helium (He). Undated product page; accessed 26 October 2026
    Source document
    Example of a commercial electronics grade; the value is not a universal fab specification. Locator : Helium (He) table, Packaged Gas Supply, Electronics Grade row: purity ≥ 99.9999 %.
13. [13] Linde Engineering. Helium Solutions : HELICS portable tanks. Undated equipment page; accessed 26 October 2026
    Source document
    Stated holding time for one container design under explicit conditions, distinct from a fab’s supply autonomy. Locator : “Highlights”: holding time > 48 days at maximum 5.7 bar; footnote ambient 30 °C; “Helium Storage Tanks” on nitrogen shielding.
14. [14] Linde. Linde Commissions World-Scale Helium Storage Cavern. 30 July 2025
    Source document
    Announced cavern capacity and commissioning; the figure does not measure inventory on 26 October 2026. Locator : First two paragraphs: commissioning at Beaumont, Texas, capacity greater than 3 billion cubic feet; current fill level not disclosed.
15. [15] Samsung Electronics. Our Efforts to Recycle Byproducts from Semiconductor Manufacturing. Undated page; result relates to 2025; accessed 26 October 2026
    Source document
    This page reports about 4.7 t/year for one line as of 2025. Baseline consumption and group coverage are not detailed; separate company communication is listed at [20]. Locator : Paragraph beginning “DS Division has established…”: one production line as of 2025; annual helium saving approximately 4.7 tonnes.
16. [16] Samsung Electronics / U.S. patent publication. US20250122079A1: Method of recycling helium from waste gas in semiconductor process; granted as US12722973B2. Application published 17 April 2025; patent granted 1 September 2026.
    Source document · USPTO Gazette: US12722973B2, 1 September 2026
    Proposed recovery architecture; it does not establish the recovery rate or configuration of the line in Samsung’s sustainability account. Locator : Description and process figures 1–7: exhaust-stream classification, scrubbers, compression, separation/purification and analysis before reuse.
17. [17] U.S. Department of Energy / EDF. Notice of Floodplain Action : Blue Spruce Operating LLC, Dry Piney Helium Project. Document dated 21 August 2026; exact online posting date not established
    Source document
    Assistance request preceding October and proposed schedule; an award and actual construction start are not established. Locator : PDF p. 1: application for federal assistance; p. 2: integrated project and proposed Q3 2026–Q3 2029 construction; p. 3: financing alternatives.
18. [18] U.S. Department of Energy / U.S. Code. Title 17 Energy Financing Program Guidance; 30 USC 1606 definitions. Guide 13 May 2026; statute checked 26 October 2026
    Source document · 30 USC 1606 : definitions · 42 USC 16513 : eligibility categories
    Program categories, conditions, review and financing are distinct. The statutory text separates the two criticality categories. Locator : Guide printed pp. 12–13, II.E: financing process; pp. 14–15, III.A: eligibility and repayment; p. 19, Box 1/footnote 10: section 1703 minerals; p. 29, III.iv: materials and project categories (a)(1)–(a)(3). 30 USC 1606(a)(2),(a)(3),(a)(5),(c); 42 USC 16513(a),(b)(13).
19. [19] Bureau of Land Management. BLM completes sale of Federal Helium System. 27 June 2024
    Source document
    June 2024 announcement that the sale closed under the 2013 law; no causal conclusion about 2026 disruptions is inferred. Locator : Opening paragraph: sale closed, buyer Messer and 45-day hand-off; following paragraph: Helium Stewardship Act 2013.
20. [20] Samsung Electronics. Samsung Electronics 2025 Q4 Earnings Call, English script. Call held 29 January 2026; undated English script.
    Source document
    Company reports around 19% reuse on select production lines and approximately 4.7 tonnes saved annually. Scope and denominator are insufficiently detailed to infer a group-wide rate or separator efficiency. Locator : PDF page 7, paragraph on the helium reuse system.
21. [21] ASP Isotopes / Renergen / Tetra4. ASP Isotopes Inc. Announces that Renergen Limited’s Virginia Gas Project has Achieved Stable Liquid Helium Production. 26 October 2026.
    Source document · Form 8-K
    Company announces completed commissioning and stable production at South Africa’s Virginia project. Storage accumulation precedes first deliveries; reaching phase 1 nameplate capacity remains a fourth-quarter 2026 target. No independent flow-rate audit. Locator : 26 October release and Form 8-K: production, storage and ramp-up.