e-terrasettlement provides full support for the settlements, billing and invoicing process. It interfaces with various external data sources for metering, SCADA, power system operations, market operations and financial clearing systems, with data validation and extensive data management services. The product is designed to handle large volumes of metering data, many simultaneous users, and complex and voluminous charge types typical to a large ISO/RTO system. It is also an ideal tool for handling complex transmission and ancillary service tariffs, and to settle transmission charges with hundreds of system users. It provides the basis for credit risk management for the system operators.