There are a couple versions floating around of the Federal Energy Management Program "Procuring Architectural and Engineering Services for Energy Efficiency and Sustainability: A Resource Guide for Federal Construction Project Managers."

whhoooh! > Link Newer version > Link Older version

Some of the items called out by Anna are covered, albeit, a bit more generically. It has helped me communicate the overall meaning and value of energy modeling myself.

There is also a very good lessons learned pertaining to this topic on an old eQuest-Users List serve post (link)

Hope this helps some.