A meter data management system includes one or more application servers configured to receive, validate and estimate received meter data. The one or more application servers may include various memory/media elements for storing raw and transformed meter data as well as software in the form of computer-executable instructions, which are executed by a processor to implement a variety of functions, including establishing a mapping between the plurality of external devices and a plurality of preconfigured processing workbins (e.g., collections of meter channels in the same time zones), transforming the received meter data into a plurality of data files identified by timing parameter and workbin, validating data provided in each data file, estimating missing or invalid data, and automatically writing validated (and optionally estimated) data as import files to a database server. Such clean data files are then imported to one or more dedicated databases installed on the database server.