In cars we have:
Nobuhiro Tajima (Monster Tajima) returning with his E-Runner Pikes Peak Special
#32: Masuoka Hiroshi - Mitsubishi i-MiEV Evolution III
#34: Greg Tracy - Mitsubishi i-MiEV Evolution III
#8: Ikuo Hanawa - Yokohama Tires - Summit HER-02
#177: Roy Richards - Honda Fit EV
#230: Steve Wickham - Toyota RAV4 EV
The official entry list has a TBD at the front of the Cars list. According to Electric Auto Sport, Janis Horelicks is planning to enter with a Tesla Roadster 360, whatever that is. Janis is with the Latvian team that entered the eO last year but were unable to finish. Their website contains a promise to return in 2014, but nothing further has been posted since September 2013.
In motorcycles we have:
#64: Jeremiah Johnson - Brutus Electric Motorcycle V2
#39: Yoshihiro Kishimoto - Mirai TT ZERO 13 (Pikes Peak Version)
#777: Jeff Clark - 2013 Zero FX
This is a lot smaller a group than the 2013 electric motorcycle field. The glaring omission is Lightning Motorcycles, whom we hoped would return to the mountain and prove their overall win last year wasn't a fluke. There are five TBD's at the bottom of the official entry list for motorcycles, maybe there's an electric hiding among them?
I wasn't able to find out much about Yoshihiro Kishimoto. His facebook page doesn't have postings about electric motorcycles this year, but shows some kind of reunion he attended with alumni of a TT ZERO run. Back in 2012 some site named ElectricRaceNews.com reported that he entered the 2012 TT ZERO with an awesome looking bike.
Johnson entered last year with a Zero S but this year has hooked up with Brutus. They're building a monster of a bike that also looks awesome. They posted a little picture gallery a few days ago: