Green, Sustainability, and Environment – what does this have to do with virtualization? Quite simply virtualization technologies can help you reduce your carbon footprint, reduce energy, reduce cooling, and of course save some money as well.  

A new set of tools are released to help you and your organization quantify the environmental and cost savings benefits available through some of Microsoft's virtualization technologies.  At the site you will be able to build a simple environmental savings report for server virtualization projects you are considering and access a set of tools, including a deeper scenario-based ROI analysis and infrastructure assessment that can help you get started on realizing that value.

More info: Microsoft Virtualization