Technology
Between the uninterruptible supply and the server there is a stretch of equipment nobody outside the industry has heard of, which decides how quickly a hall can be re-configured, how much of its capacity is strandable, and what a colocation tenant is actually charged for.
In one sentence
Whitespace distribution is the equipment between the uninterruptible supply and the server: switchboards, overhead busway, tap-off boxes and rack power distribution units, together with the metering that makes each circuit visible.
The older approach ran conduit and cable from a distribution panel to each rack position, which fixes the layout: changing a rack means an electrician re-pulling cable. Overhead busway replaced that with a continuous track carrying the conductors, into which tap-off boxes plug at any point along its length. That converts an electrical change into a mechanical one, and it is the reason busway won in space that is leased and re-configured repeatedly.
AI density has stressed the whole stretch. A rack drawing over a hundred kilowatts needs a much larger tap-off, heavier conductors and rack distribution units with connector ratings the previous generation did not use, and it draws through fewer, larger cords rather than many small ones. At the same time the metering has become commercially load-bearing: leases are written and audited against measured power per circuit, so what the equipment reports is part of the product rather than telemetry.
Churn. A hall's rack layout changes over a lease, and with busway a new position is a tap-off box clipped onto the track rather than a cable pull. The capital cost per rack is higher and the flexibility is the return, which is why it appears in leased and multi-tenant space earlier and more consistently than in single-purpose owner-operated halls.
Colocation is sold by the kilowatt, so the branch and outlet measurements are what the invoice is built from and what a tenant audits. They are also how an operator finds stranded capacity — power provisioned to positions that are not drawing it — which on a constrained site is capacity it can sell without building anything.
Current scales with power, so the conductors, connectors and protection all move up a size, and the number of separate cords falls. Higher distribution voltage is the lever that keeps the current manageable, which is why designs have moved to three-phase feeds at the higher of the available voltages and, in the newest ones, to direct current inside the rack.
1 of these is marked as a chokepoint: a handful of qualified suppliers, a multi-year lead time, or a single geography.
The distribution boards at the head of the whitespace are the same product class as the rest of the electrical chain and carry the same lead times.
SwitchgearEverything downstream assumes an uninterrupted source; the distribution layer adds no ride-through of its own.
Uninterruptible suppliesWhere the rack converts to a shared direct-current busbar, the shelf is designed by the server maker and sets what the last connection has to deliver.
Rack power deliveryBusway and its tap-offs are mostly conductor, and the quantity needed per rack rises with the current that rack draws.
What may be plugged into what, at what current, is set by code and by connector standards, and those lag the rack designs that push against them.
Other pages in this map that name Busway and rack distribution as something they cannot do without.
What each company supplies at this step, and — where a public figure exists — its share of this specific market — with what that share measures, the period it covers and who published it. Some rows also show the company’s own reported revenue for the segment covering this step, which is a different thing: it says how much this business matters to that company, not how much of the market it holds. Not a ranking and not a recommendation.
Supplies busway, rack power distribution units and the metering built into them.
Supplies busway, switchboards and rack distribution across the whitespace.
Supplies rack power distribution and the monitoring that reports it.
Supplies busway, switchboards and rack distribution alongside the upstream plant.
Supplies low-voltage switchgear and distribution equipment into the same halls.
Supplies wiring devices, connectors and the electrical components the last metres are assembled from.
Supplies enclosures, busbar connection and the electrical protection around the rack.
Supplies data-centre switchgear and power distribution through Anord Mardix, built to order for individual halls.
Supplies the conduit, cable tray and support systems the distribution is routed in.
Whether direct-current distribution to the rack displaces alternating-current busway in new AI halls.
Whether switchboard and busway lead times ease from their current levels.
Whether per-outlet metering becomes a standard lease term rather than a premium option.
Each page explains one technology in plain language, states what it depends on, and names companies by what they supply at that step. Company roles are described qualitatively and deliberately carry no market shares, revenue figures or rankings — those change faster than an explainer can, and a stale number is worse than none. Ticker links point at company pages on this site and are provided for reference only.
Nothing here is investment advice, a recommendation, or a forecast. A company named on a page about a technology is not thereby a good investment, and the chokepoints described are structural facts about supply chains rather than predictions about prices. Technology moves; where a page describes something as unresolved or in development, that was true when it was written.
Plutux no es un asesor de inversiones. Los datos de mercado y el análisis generado por IA son solo informativos y educativos, no asesoramiento de inversión. Aviso legal