Portions of the electric power sector in the United States have been deregulated to allow for a more competitive environment. While barriers to entry still exist, deregulation has provided opportunities for emerging players, resources, and technologies to reshape this critical energy sector. All wholesale electric energy markets in the United States focus on locational marginal pricing (LMP). Module 7 provides both a high-level understanding of LMPs and electric energy markets and it also provides advanced curriculum on the foundations of LMP pricing via duality theory, an advanced topic that is not covered in any textbook today.