From the Software enabled Earth blog:
Today, Microsoft announced the new Hyper-Green site which shows how virtualization technologies can help you reduce your carbon footprint, reduce energy, reduce cooling, and of course save some money as well.
The site includes of a set of tools available designed 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.
Check it out now: http://www.hyper-green.com/