Go Green with Edison for XP, Edison is an easy-to-use energy-monitoring application to help you cut down on PC juice consumption. Edison brings dramatic PC energy savings into homes like yours. Easy to download and install, Edison enables you to manage your PC’s power usage, save on energy costs, and help preserve the environment. This version is for Windows XP only, a version for Windows Vista is also available from this site. Supports Windows XP (Service Pack 2).