U.S. Department of Energy

This is the preferred term for printed and outreach materials. When spelling it out, "U.S." should precede "Department of Energy" to distinguish it from other state and international departments. However, "U.S." should not be included with the acronym "DOE." Do not include "the" before "DOE."

On first reference, "Energy Department" may be used in communications to the press.

If the possessive is used with the term, the apostrophe should go after "U.S. Department of Energy" and with the "DOE" acronym as well. However, if you can write it in a way that avoids use of the possessive, that is preferred.