Cable production capacity is emerging as a bottleneck for AI-driven data-centre construction, Nexans chief financial officer Vincent Piquet told Reuters on 22 October 2026. A new cross-linked polyethylene (XLPE) cable line, known in the industry as a CV line, takes around three years to build, Reuters reported. The same day, Rexel said its US data-centre sales rose in the triple digits and now make up about 13% of its US sales, and INNIO said orders from one US data-centre developer had reached about 1.72 gigawatts.
Two days earlier, ABB reported record third-quarter orders of $12 billion and a triple-digit increase in its data center segment. As we read it, the AI build-out is now testing the suppliers below the chips, from cables and gas engines to electrical distribution and quartz, with orders arriving in months while a new cable line takes years.
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A one-minute Business Engineer explainer of grid cost allocation: who pays for a new power line as electricity demand grows. It teaches the general idea only and says nothing about any company in this piece.
The key insight: As we read it, the new element is that the suppliers below the chips now describe data centres as a constraint and a driver at once: Nexans’ CFO told Reuters cable capacity is emerging as a bottleneck, while ABB and Rexel reported triple-digit growth tied to data centers.
Update (23 Oct): Washington funds the power chips behind AI data centres and fusion. The Commerce Department said on 22 Oct it has signed four letters of intent for up to $389 million in CHIPS R&D awards for power semiconductors and materials: Helion up to $175 million (power semiconductors and modules for its fusion generators), Commonwealth Fusion Systems up to $85 million, Vertical Semiconductor up to $73 million (vertical GaN power chips, including a demonstration for what the release calls “the world’s first 2.5 MW super intelligence data center rack”), and Sibelco up to $56 million (ultra-high-purity quartz). Commerce’s Bill Frauenhofer said the work will strengthen America’s ability to “convert and deliver power for the grid, advanced data centers, defense systems, and emerging fusion energy.” The department will take a minority, non-controlling and non-voting equity stake in each company as a condition of the awards. These are letters of intent; the final awards come later.
What the Suppliers Said
- Nexans. Global cable capacity is tight, Piquet told Reuters, as demand grows faster than the industry can expand manufacturing. “Things can’t move quickly and the people building these data centres are in a great hurry,” he said. He said grid constraints were slowing some projects but also supporting demand for Nexans products and allowing the company to be more selective when allocating capacity.
- INNIO. The company announced a 620 megawatt follow-on order from a developer and operator of mega-scale data center campuses in the US, booked in September 2026. Together with the customer’s 1.1 gigawatt order announced in July, cumulative orders reach approximately 1.72 GW. The customer is not named.
- Rexel. Third-quarter sales were €5,453m, up 11.4% on a constant and same-day basis, the best rate since 2022. The company raised its 2026 guidance for the second time, to same-day sales growth of about 7% from about 5%. In Canada, data centers were about 10% of sales.
- ABB. Third-quarter orders reached $12,055 million, up 40%, “Most notably so in the data center segment where we saw a triple-digit increase,” ABB said on 20 October.
- The Commerce Department. It signed four letters of intent for up to $389 million in CHIPS R&D awards. They include up to $56 million for Sibelco’s ultra-high-purity quartz and up to $73 million for Vertical Semiconductor’s vertical gallium nitride power semiconductors, including a demonstration for what the department calls the world’s first 2.5 MW super intelligence data center rack. The department said it will receive a minority, non-voting equity stake in each company as a condition of the awards.

The Supply Chain, Layer by Layer
The table lists the signals from each layer with the figure and the AI or data-centre wording each source uses.
| Layer | Company | Figure, as stated | AI or data-centre wording | Source |
|---|---|---|---|---|
| Cable | Nexans | A new XLPE cable production line takes around three years to build; Q3 2026 Group organic growth of +9.0% | Cable capacity is emerging as a bottleneck for AI-driven data-centre construction, the CFO told Reuters | Reuters, 22 Oct 2026; Nexans 9M release |
| Power generation | INNIO | 620 MW follow-on order booked in September 2026; about 1.72 GW in total from one customer | Jenbacher units “to support demanding AI workloads”, the CEO said | INNIO release, 22 Oct 2026 |
| Power equipment | ABB | Q3 orders of $12,055 million, up 40% | “a triple-digit increase” in the data center segment | ABB, 20 Oct 2026, via our piece |
| Electrical distribution | Rexel | Q3 sales of €5,453m, up 11.4% on a same-day basis; US up 18.2%; 2026 guidance raised to c.7% growth | US data centers up in triple digits, c. 13% of US sales | Rexel Q3 2026 release, 22 Oct 2026 |
| Materials | Sibelco | Up to $56 million in CHIPS R&D funding, one of four letters of intent worth up to $389 million | Ultra-high-purity quartz for crystal growth crucibles in the semiconductor value chain | Department of Commerce release, 22 Oct 2026 |
| Materials | TSMC | Surveyed suppliers on rare-earth-free motors for factory-automation equipment, three people told Reuters | Reuters tied the move to the risk from Beijing’s export controls | Reuters, 22 Oct 2026, via our piece |
| Storage | Western Digital | Fiscal Q1 2027 revenue up 55% to $4.38 billion | Cloud end market at 88% of revenue, on a slide titled “Growth Driven by Cloud and AI Workloads” | Western Digital, 22 Oct 2026, via our piece |
Figures as each company or outlet states them, for different periods and measures (orders, sales, revenue, funding), so they cannot be added or compared directly.
The Arithmetic
- About €301 million. Rexel’s US sales were €2,317.4m in the third quarter, up 18.2% on a same-day basis. At about 13% from data centers, that is roughly €301 million of US data-center sales in the quarter, by our arithmetic. Rexel gives the share as approximate.
- Months against years. INNIO’s customer added a 620 MW order, booked in September, to a 1.1 GW order announced in July. Nexans’ CFO said a new cable line takes around three years to build.
- Where the $389 million goes. Of the up to $389 million in letters of intent, $73 million, about 19% by our arithmetic, is tied to Vertical Semiconductor’s data-center rack work, and $56 million, about 14%, to Sibelco’s quartz. The two largest amounts, up to $175 million for Helion and up to $85 million for Commonwealth Fusion Systems, are for semiconductors used in fusion power systems.
- Two triple digits. ABB and Rexel both reported triple-digit growth tied to data centers in the same week, ABB in orders and Rexel in US sales.
Connecting the Coverage
- Our piece on ABB covers the record $12 billion in orders and the triple-digit rise in the data center segment.
- Our piece on TSMC covers its search for rare-earth-free motors, which Reuters tied to Beijing’s export controls.
- Our piece on Western Digital covers the 55% revenue rise and the Cloud end market at 88% of revenue.
- Our data-centre map tracks the AI build-out by company and site.
The Structural Read
As we read it, the binding constraint in the AI build-out is moving down the stack. Nexans said a new cable line takes around three years to build, while INNIO’s customer added 620 MW within months of a 1.1 GW order.
As we read it, scarcity is shifting pricing power to suppliers. Nexans’ CFO said grid constraints let the company be more selective when allocating capacity, and Reuters reported that Enedis moved to six- or seven-year contracts to secure cable.
As we read it, governments are treating materials as part of the same stack. The Commerce Department’s letters of intent cover quartz for semiconductor crucibles and power semiconductors for a data center rack, with equity stakes attached.
Dr. Olaf Berlien, President and CEO of INNIO, 22 Oct 2026
“Our containerized Jenbacher solutions deliver what data centers need most: fast deployment, high power density, fuel efficiency, and the performance to support demanding AI workloads”
Three Implications
FOR DATA-CENTRE DEVELOPERS Nexans’ CFO said grid constraints were slowing some projects, and Reuters reported Oracle’s force majeure notice over power for a New Mexico site.
FOR SUPPLIERS Rexel raised its 2026 guidance for the second time, and Nexans said it is investing to expand medium-voltage production capacity in Europe and the US for markets such as data centers.
FOR INVESTORS Rexel puts US data centers at about 13% of its US sales and ABB reported a triple-digit increase in data center orders, two measures of how far AI demand reaches into industrial companies.
The Business Engineer Lens
This story maps onto the Business Engineer framework The Nine Layers of AI.
The framework says the AI economy “is a layered industrial stack — and at any given moment, the binding constraint sits at a different layer than it did six months ago.”
As we read it, this week’s reports put the constraint in the layer of cables, power gear and materials beneath the chips. The framework was published in May 2026 and does not discuss Nexans, Rexel, INNIO or ABB.
What Is Not Established
We read Reuters’ Nexans report in a full syndicated rewrite, not on Reuters itself, and Nexans’ own release does not use the word bottleneck. INNIO does not name its customer. Rexel gives the data-center shares as approximate, so the €301 million is an estimate. The Commerce Department figures are letters of intent, not final awards. We did not read Bloomberg’s report on copper demand, so copper is not in the table. The figures cover different periods and measures and are not a total for the supply chain.
The Bottom Line
Nexans’ CFO told Reuters that cable capacity is emerging as a bottleneck for AI data centres and that a new cable line takes around three years to build. Rexel said US data-center sales rose in the triple digits to about 13% of its US sales, INNIO said one data-centre customer’s orders reached about 1.72 GW, and ABB reported record $12 billion orders with a triple-digit rise in data centers.
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A note on sourcing. This piece is based on Nexans’ 9M 2026 release, Rexel’s Q3 2026 sales release, INNIO’s 22 October 2026 release and the Commerce Department’s 22 October 2026 release, all read in full, plus Reuters’ 22 October report on Nexans, read in a full syndicated rewrite, and our own earlier pieces on ABB, TSMC and Western Digital. We did not read Bloomberg’s copper report. The figures cover different periods and measures; the arithmetic is ours and labelled. Nothing here is investment advice.
Sources: Reuters: Cable capacity emerges as bottleneck for AI data centres, Nexans says (22 Oct 2026, syndicated) · Nexans: 9M 2026 financial information · Rexel: Q3 2026 sales · INNIO: follow-on order brings data center customer to 1.72 GW (22 Oct 2026) · US Department of Commerce: letters of intent for $389 million of CHIPS R&D awards (22 Oct 2026)








