Electricity is a quirky commodity: more often than not, it cannot be stored, easily transported, or imported from overseas. Before lighting up our homes, it changes hands through specialized electricity markets that rely on engineering expertise to trade competitively while respecting the physical requirements of the electric grid. The Current Economy is an ethnography of electricity markets in the United States that shows the heterogenous and technologically inflected nature of economic expertise today. Based on ethnographic fieldwork among market data analysts, electric grid engineers, and citizen activists, this book provides a deep dive into the convoluted economy of electricity and its reverberations throughout daily life.