The Department of Energy today announces an extension of the reply comment period for its Request for Information implementing Executive Order 13563, seeking public comment on how best to review its existing regulations. The Department is interested in receiving comment on the suggestions and comments received from outside parties.  Those comments and suggestions are posted on the Office of the General Counsel website: Retrospective Review of Regulations.  Note that it is not necessary to have filed comments during the initial comment period to file reply comments, and reply comments need not be limited to subjects discussed in comments filed during the initial comment period.