The Think Eco-Logical program (a green IT initiative launched by the BPM Forum in partnership with SGI and Intel) has developed an interactive tool called the Eco-IT Monitor (www.sgi.com/ecomonitor). The online caculator provides IT professionals with a personalized analysis of data center costs and carbon footprint, and illustrates how they can dramatically cuts their emissions and expenses by implementing specific green best practices.
If you get a chance to check it out, let me know if it is something you find interesting and valuable, and would pass along to your colleagues in IT and data center management.
Thanks!