Regulating the transmission and sale of natural gas for resale in interstate commerce; Regulating the transmission of oil by pipelines in interstate commerce; Regulating the transmission and wholesale sales of electricity in interstate commerce; Licensing and inspecting private, municipal, and state hydroelectric projects; Approving the siting of and abandonment of interstate natural gas facilities, including pipelines, storage and liquefied natural gas; Ensuring the reliability of high voltage interstate transmission system; Monitoring and investigating energy markets; Using civil penalties and other means against energy organizations and individuals who violate FERC rules in the energy markets; Overseeing environmental matters related to natural gas and hydroelectricity projects and major electricity policy initiatives; and Administering accounting and financial reporting regulations and regulating businesses of regulated companies.