This paper describes how the SCOPF provides signals agents need to interact in electricity markets and some of the advanced features needed for its implementation. These include: sensitivity analysis, AC and DC options for both power flow and contingency analysis solutions, approximated limits including reactive power flows, unenforceable constraint management, modeling of load response as a control through curtailment contracts, determination of reactive power LMP's, modeling of nonlinear limits such as voltage stability and dynamic ATC through nomograms, variable area transfer pricing, and spatio-temporal analysis.