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Grid Equipment Dependency

The invisible substrate. Long-lead transformers, single-vendor steel, and the physical limits of replacement.
Supply Chain
Raw Material
Demonstrated Failure
Physical Attack
Select a case
7 cases. The grid's hidden dependency: equipment that takes years to replace and can't be manufactured domestically.
This atlas shows documented events and structural dependencies, not all exposure. Absence of a marker does not mean absence of dependency.

Severity
Affected Scope
Dependency
Consequence
Who Controls
Mitigation
Sources