DossierSubscriber Letter

The Compute Build-Out

A visual dossier on the capital, power, and depreciation behind the AI infrastructure cycle.

14 May 20261 min readBy A. Vass

A dossier is not a letter. It is a folder — charts, diagrams, fragments of argument, and the occasional archival image, arranged so that a serious reader can sit with the whole shape of a question in an afternoon.

This one concerns the compute build-out: the new heavy industry that the screen keeps insisting is weightless.

Fig. 1Schematic — the capital stack of a single facility, from grid interconnect to served inference. Illustrative, not to scale.

The argument, developed at length in The Cost of Light, is simple to state and uncomfortable to hold: this is railroads, not software. The returns will be set by the cost of power and the speed of depreciation, not by the elegance of the models.

— Letter folds here —

The rest of this letter is reserved for subscribers.

  • ·The full chart book — power, capex, and depreciation curves
  • ·Site-by-site notes on the build-out's geography
  • ·The financing map across hyperscaler and neocloud balance sheets

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