Green Rankings the top 500 list

Our exclusive environmental ranking of America's 500 largest corporations.

Green Ranking Top List
Rank Company Industry Sector Green Score Environmental Impact Score Green Policies and Performance Score Reputation Survey Score
28. AES  Utilities 47.89 2.70 23.19 34.04
36. Allegheny Energy  Utilities 25.04 0.60 42.11 24.23
35. Ameren  Utilities 31.63 1.20 28.05 31.34
34. American Electric Power  Utilities 33.17 1.00 29.48 47.68
14. Atmos Energy  Utilities 65.47 39.00 22.51 32.99
15. Calpine  Utilities 65.43 6.60 51.15 30.97
7. CenterPoint Energy  "Less carbon-intensive than companies dependent on... Utilities 71.75 54.60 37.21 35.70
26. CMS Energy  Utilities 52.79 5.60 23.41 23.68
6. Consolidated Edison  "Strengths include aggressive control of electricity... Utilities 71.91 28.20 39.18 40.87
21. Constellation Energy  Utilities 60.37 12.00 20.27 30.67
25. Dominion Resources  Utilities 56.27 3.30 41.90 34.97
22. DTE Energy  Utilities 60.04 3.90 50.93 32.55
31. Duke Energy  Utilities 44.91 1.60 48.32 58.59
17. Edison International  Utilities 64.09 3.70 58.47 44.82
23. Entergy  Utilities 59.57 4.90 36.69 55.09
11. Exelon  Utilities 67.96 8.10 45.39 45.70
32. FirstEnergy  Utilities 43.15 2.40 16.89 32.46
20. FPL Group  Utilities 61.01 5.10 42.78 46.23
5. Integrys Energy Group  "Although it largely uses coal to... Utilities 71.92 10.30 54.53 34.58
4. NiSource  "To date, has avoided compliance problems... Utilities 72.08 6.20 67.60 37.59

* Due to a miscalculation, the Green Rankings significantly overstated ConAgra’s Water Use, thus giving it an incorrect Environmental Impact Score and Green Score. ConAgra should have been ranked 342 overall. ConAgra’s Environmental Impact Score and Green Score are not directly comparable to other company scores due to the miscalculation previously noted. We regret the error.

Resource Providers:

  • KLD Logo

    KLD Research & Analytics, Inc., an independent investment research firm, served as lead data consultant and calculated the rankings It was also responsible for generating the Green Policies and Performance section of the rankings. KLD analyzes environmental, social and governance data on companies worldwide. www.kld.com

  • TruCost Logo

    Trucost, a leading international environmental data firm, specializes in quantitative performance measurement and management. The Environmental Impact Score in the rankings is based on its global database. www.trucost.com

  • Corporate Register Logo

    CorporateRegister.com conducted the Reputation Survey for the green rankings. Based in London, it is the world’s largest online directory of company-issued social responsibility, sustainability and environment reports. www.corporateregister.com.

  • ASAP Media Logo

    ASAP Media, founded by journalists/editors Peter Bernstein (pbernstein@asap-partners.com) and Annalyn Swan (aswan@asap-partners.com), served as Newsweek’s editorial partner, initiating and coordinating the green rankings project. ASAP Media specializes in creating magazine, book and web content.

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