Corporate sustainability, by the numbers: Who’s up, who’s down, who cares?

This has been a big week for corporate sustainability rankings, with the Dow Jones Sustainability Index (DJSI) and the Carbon Disclosure Project releasing new reports. Vote Solar and the Solar Power Electric Industries Association showcased the  top 20 corporate users of solar power in the US. A book called Good Company just landed on my desk, along with its own 2012 Good Company Index. And October will bring the World Series, Halloween and, of course, the annual Newsweek “green” rankings of big public companies.

All of which raises a couple of questions.

Do these ratings and rankings matter?

More important: Should they?

Undeniably, they do matter, mostly but not entirely because of the prestige they confer upon companies that do well. Press releases are flying! “Carbon Disclosure Project Salutes Con Edison” (Really?) “PepsiCo Earns Sustainability Accolades.” “GM Named Top Solar User in the U.S. Auto Sector.” This is all well and good. Some middle-management executive had to fill out those CDP forms or buy those solar panels, and why not recognize their efforts with a salute or an accolade? [click to continue…]