Beckman Coulter
Bectel Corp.
Bensley Design Studios,Bangkok
Bi Water, UK
CalEnergy
Calpine Corp.
Carhartt
Chevron Corp.
CMS Energy
Covanta Energy
Diamond Energy
Duke Energy
ExxonMobil Corp.
Fluor Corp.
Holmes & Narver
Jacobs Corp.
MDU Resources Group
Mid America Energy
Mission Energy
Mirant Corp.
Montgomery Watson
Woley Parsons
Nigara Botteling LLC
NRG Energy
Parsons Corp.
SDG&E
The Walt Disney Co.
Tenaska Energy
Toshiba