Wherever used in this chapter, unless a different meaning clearly appears in the context: “Authority” means a political subdivision and a body politic and corporate created, organized and existing pursuant to the provisions of this chapter, or if the authority is abolished, the board, body, commission, department or officer succeeding to the principal functions thereof or to whom the powers given by this chapter shall be given by law. “Bonds” or “revenue bonds” means bonds, notes and other evidences of indebtedness of an authority issued by the authority pursuant to the provisions of this chapter. “Cost” or “cost of a project” means, but shall not be limited to, the cost of acquisition, construction, reconstruction, improvement, enlargement, betterment or extension of any project, including the cost of studies, plans, specifications, surveys, and estimates of costs and revenues relating thereto, the cost of labor and materials; the cost of land, land rights, rights-of-way and easements, water rights, fees, permits, approvals, licenses, certificates, franchises, and the preparation of applications for and securing the same; administrative, legal, engineering and inspection expenses; financing fees, expenses and costs; working capital; costs of fuel and of fuel supply resources and related facilities; interest on bonds during the period of construction and for such reasonable period thereafter as may be determined by the issuing authority; establishment of reserves; and all other expenditures of the issuing authority incidental, necessary or convenient to the acquisition, construction, reconstruction, improvement, enlargement, betterment or extension of any project and the placing of the project in operation. “Governmental unit” means any incorporated city or town in the Commonwealth owning on January 1, 1979, a system or facilities for the generation, transmission or distribution of electric power and energy for public and private uses and engaged in the generation or retail distribution of electricity; any incorporated city in the Commonwealth which on January 1, 1979, has a population of 200,000 or more; or any county or incorporated city or town in the Commonwealth which after January 1, 1979, is authorized to participate in an authority pursuant to an act of the General Assembly. “Project” means any system of facilities for the generation, transmission, transformation, supply, or distribution of electric power and energy by any means whatsoever, including fuel and fuel supply resources and other related facilities, any interest therein and any right to output, capacity or services thereof, but does not include facilities for the distribution of electric energy for retail sale unless the facilities are owned by an authority created by a governmental unit that is exempt from the referendum requirement of § 15.2-5403, and the distribution is limited to retail sales within the geographic area that was served as of January 1, 2006, by the governmental unit that is the sole member of such authority. “Unit” means any governmental unit; any electric authority; any investor-owned electric power company; any electric cooperative association or corporation; the Commonwealth or any other state; or any department, institution, commission, public instrumentality or political subdivision of the Commonwealth, any other state, or the United States.