Two “Types” of Electric UtilitiesWhose Perspective Will Be Taken?What Aspects of an Electric Utility Will We Focus On?Types of Generating Units a Utility May HaveHow Does a Utility Decide Which Generating Units to Use?Let’s Create a Hypothetical Utility SystemNow Let’s Operate Our Hypothetical Utility SystemUtility System Operation on the Summer Peak DayUtility System Operation over the Course of a YearSo What Have We Learned and Where Do We Go Next?