Principal Electricity Facilities in the United States

Huge map showing the primary electrical infrastructure during the 1970s energy crisis.

The power network of America is spread from coast to coast on this intricately detailed map of the nation. Hydroelectric and combustible fuel generation stations and transmission lines are noted according to the legend in the lower left.

A rainbow of different colors highlights the ownership of over 200 different operators across the country, with an index at the bottom of the sheet organized by state. A second index, on the right side, lists the generating stations. Thirty-seven insets around the central map show Alaska, Hawaii, and major urban centers.

Created by the Federal Power Commission and published in Washington, D.C. by the Government Printing Office in 1977 – a particularly volatile time for the international energy market and a period of series introspection for U.S. domestic production.