Recently found on the site of the EPA a list of “climate leaders”.

They are EPA partner companies that commit to reducing their impact on the global environment by completing a corporate-wide inventory of their greenhouse (GHG) gas emissions, setting long-term reduction goals, and annually reporting their progress to EPA. Through program participation, companies create a lasting record of their accomplishments and identify themselves as corporate environmental leaders.

For the comprehensive list visit: http://www.epa.gov/stateply/partners/index.html