Introduces U.S. energy law and policy with a specific focus on the regulated electricity sector. Explores the dynamics of natural monopoly markets, public utilities and their regulation, and the interplay of state and federal power in the energy space. Examines coal, natural gas, nuclear power, hydropower, renewables, storage, and efficiency for their impacts and potential as electrical energy sources in a carbon-constrained world. Concludes by investigating the legal potential to proactively foster and sustain a transition to a carbon-sustainable energy economy.