FERC issued a new rule that restricts access to certain information about energy infrastructure that may pose national security concerns. (FERC calls this Critical Energy Infrastructure Information, or CEII).

This rule replaces a previous (and similar) policy which was issued shortly after the September 11, 2001 attacks.

A little more than four years after they were first issued, FERC has amended its CEII regulations. The amended regulations (read FERC's final rule or its order on rehearing) have several significant new features.