e-terramarketclearing is a flexible and low risk physical market management solution for the RTO/ISO/TSO in competitive electricity markets. Complying with market rules that include system security requirements, e-terramarketclearing clears competitive bids from market participants to develop pre-dispatch schedules and real-time dispatch targets, and determines market clearing prices. e-terramarketclearing includes a Security Constraint Unit Commitment (SCUC), Security Constraint Economic Dispatch (SECD) and Simultaneous Feasibility Testing (SFT). e-terramarketclearing also includes applications for clearing balancing markets.