Windows 7 Power Management …
This is a new whitepaper, downloadable here : Windows 7 Power Management Whitepaper 
How Windows 7 Helps
• Reduced Power Consumption
Microsoft designed Windows 7 with a strong focus on reducing the overall power consumption by investing in key areas of the platform including performance optimizations, idle resource utilization, device power management, and key end-user scenarios.
• Enhanced User Experience
Windows 7 can provide users with a richer experience when they are travelling by offering greater responsiveness and energy efficiency. Windows 7 provides enhanced processor power management to deliver energy savings and performance on portable computers, which can provide longer battery life.
• Provide IT with Better Tools to Manage Power Consumption
Windows 7 provides IT pros the tools they need to configure and resolve issues with power management, including power-management diagnostics. IT pros can configure Windows 7 power management by using PowerCfg.exe (a command-line power-management utility), Group Policy, and Windows Management Instrumentation (WMI). With Windows 7, IT pros are able to centrally manage more power management settings on a more granular level.
