A system of monitoring and/or maintaining remotely located autonomously powered lights, security systems, parking meters, and the like is operable to receive data signals from a number of the devices, and provide a comparison with other similar devices in the same geographic region to detect a default condition of a particular device, and/or assess whether the defect is environmental or particular to the specific device itself. The system includes memory for storing operating parameters and data, and outputs modified control commands to the devices in response to sensed performance, past performance and/or self-learning algorithms. The system operates to provide for the monitoring and/or control of individual device operating parameters on an individual or regional basis, over preset periods.