OK, so I went to the DOE website, since ARPA-E is with them.
I looked through their org charts and program descriptions. I found this article: http://www.energy.gov/recovery/science_technology.htm
Which has this to say about ARPA-E:
Advanced Research Project Agency-Energy (ARPA-E)
$400 million in American Recovery and Reinvestment Act
Modeled on the Defense Advanced Research Projects Agency (DARPA), which was founded at the beginning of the Cold War and developed the technologies that resulted in modern computer operating systems and the Internet, ARPA-E will support transformational energy technology research projects with the goal of enhancing the nation’s economic and energy security. By fostering an atmosphere of innovation, ARPA-E will provide a place for research into cutting edge technologies that are still too risky for private industry, creating the opportunity for revolutionary breakthroughs in energy technology.
* Learn more about DARPA, the model for ARPA-E
Note, the only link in this article was to DARPA, the model for ARPA-E. So it sounds like they still don’t have a contact point. If anyone knows better, or is a better searcher, let me know! Maybe a phone call. I’m in Iran, phone calls get awkward here.