A public utility is an entity that provides the general public with essential goods and services such as electricity, natural gas, energy, water, sewer, heat, telecommunications (telephone, fiber optic or broadband internet), railroad, and rail transit.

Public utilities (goods and services) are often provided by a public utility corporation that is essentially given a monopoly over the provision of the good or service in a certain geographic area—and exemption from antitrust and unfair competition laws—in exchange for certain governmental restrictions and regulations. Public utility companies are often regulated by a governmental Public Utility Commission (PUC).

The laws and rules that govern public utilities are usually located in state or federal statutes—depending on whether the utility is regulated by the state or federal government. For example, many states have a public utilities code—sometimes called a public utility regulatory act—or provide for public utility corporations and their regulation in the state administrative code. The Federal Energy Regulatory Commission (FERC) is one example of a PUC at the federal level.

In Wyoming, public utilities are regulated entities that provide essential services such as electricity, natural gas, water, and telecommunications to the public. These utilities are typically granted a monopoly within a certain geographic area in exchange for adhering to government regulations and oversight. The regulation of these utilities is primarily the responsibility of the Wyoming Public Service Commission (PSC), which operates under state law to ensure that the services provided are adequate, reasonable, and fairly priced. The PSC sets rates, investigates service complaints, and oversees the operations of public utilities within the state. While the PSC regulates most utility services at the state level, some aspects, particularly those related to interstate commerce or federal lands, may fall under federal jurisdiction and be regulated by agencies such as the Federal Energy Regulatory Commission (FERC). Wyoming statutes and administrative codes provide the legal framework for the regulation of public utilities, detailing the powers and duties of the PSC and the obligations of utility providers.