This textbook provides broad coverage of energy supply and use. It discusses how energy is produced, transformed, delivered to end users, and consumed. The author discusses all of this at an undergraduate level, accessible to students of varying backgrounds.  High-level and human-scale perspectives are included. As a high-level example, the book discusses the shares of global primary energy that are provided by oil, gas, coal, hydroelectricity, and renewables, as well as trends in energy consumption and supply over time.  Human-scale examples will resonate with readers’ every day experiences. The link between economic development and energy consumption is presented, which facilitates understanding of how global energy consumption growth is inevitable as economic development occurs.  Coverage includes separate chapters on the oil, natural gas, coal, and electricity sectors. Each of these provides high-level descriptions of the technology involved in the production of that type of energy as well as the processing and transportation that occurs to bring the energy to end users. The book discusses the technological implications of energy transitions such as increased use of renewables or changes in the use of nuclear energy using Germany and Japan as examples. It closes with a discussion of future energy use.