Determine power usage programmatically in Windows?

Question

Are there any OS capabilities in Windows to know your system's current power usage programmatically? (Ideal solution could be via WMI interface.)

Answer 1

Starting with Windows 7 you can use the Win32_PowerMeter WMI class located in the root\CIMV2\power namespace, this namespace has lot of another classes and events related to the power management and profiles.