It’s that time of year again! The fourth annual Newsweek Green Rankings list has arrived, rating the largest publicly traded companies in the United States and across the globe on their environmental performance. Newsweek collaborated with Trucost and Sustainalytics to compile companies’ overall Green Score from three component scores: Environmental Impact, Environmental Management and Environmental Disclosure, weighted at 45%, 45% and 10% respectively.

The top 5 U.S. Companies are:

  1. IBM
  2. Hewlett-Packard
  3. Sprint Nextel
  4. Dell
  5. CA Technologies

To read more about the top 15 U.S. companies and see their scores, please click here.

The top 5 global companies are:

  1. Santander Brasil
  2. Wipro
  3. Bradesco
  4. IBM
  5. National Australia Bank

To read more about the top 15 global companies and see their scores, please click here.

Companies are also ranked according to industry, including Consumer Goods, Healthcare, Energy, Professional Services and Utilities (20 total). There are even lists such as Least Green Companies (BlackRock), Most Transparent Companies (UPS) and Reputation and Reality Winners list (IBM).

Scores were calculated using the same methodology as 2011 for comparability, in order to create a baseline for these companies and provide an environmental benchmarking tool to them and other stakeholders. To see the full lists please click here.

What do you think? Any surprises from the 2011 rankings? Do you agree or disagree with the top ranked companies? Least green companies? Let us know!