An Internet-based system and method is set forth for managing a number of uninterruptible power supply systems. The system includes an uninterruptible power supply manager computer coupled to a number of user computers via a computer network. The manager computer is further coupled to the number of uninterruptible power supply systems via the computer network. The manager computer can communicate with the number of uninterruptible power supply systems to obtain inventory and/or status information related to each of the uninterruptible power supply systems. The inventory and/or status information is contained in a database defined on the manager computer. An inventory engine, which is included in the computer manager, can configure and arrange the inventory and/or status information into a number of reports.