In this section we outline the main steps typically involved in the short-term operation of power systems. Our discussion is based on the operation of ISO/RTO markets in the US, where different regions of the country have seen a considerable degree of convergence in their electricity market design over the last several years. A table summarizing market operation and the current state of wind power forecasting for the Midwest ISO (MISO), New York ISO (NYISO), PJM, Electric Reliability Council of Texas (ERCOT), and California ISO (CAISO) is provided in the appendix (Table A1).