The Physical Layer

AI and energy infrastructure, explained plainly.

Companies

PJM

On the map: The grid connection

Named in one piece. Each entry below is that piece's own description of what the company makes, from its exposure map.

  1. Rules, grids and wires

    FERC, NERC, ERCOT and PJM set the terms. Dominion Energy, Oncor and American Electric Power build the lines.

    America rations the plug: who may be cut, who must hold on, who pays · 22 September 2026

This maps who operates in each layer. It is not a recommendation, and naming a company is not a view on its shares. Personal research, not investment advice.