Dive Brief:

• Arizona regulators are asking the state's utilities to report on how prepared they are for terrorist attacks.
• The concern, also seen at the federal level, was triggered by an attack last year on an important Pacific Gas & Electric substation.
• The Arizona Corporation Commission's questions for utilities ranged from cyber attacks to physical security.

Dive Insight:

Federal regulators are beginning to develop security standards for key utility infrastructure. Those standards are designed to improve grid reliability but, obviously, will come with a price tag that will be passed onto power users.