Several events combined to bring about the energy crisis of the '70s. The first was a dramatic rise in energy consumption, with the United States consuming a huge percentage of the world's energy in proportion to its population. Domestic oil production declined at the same time, leading the country to lean heavily on foreign oil, and in 1973, the US was placed under an OPEC embargo for political reasons. Middle Eastern members of OPEC wished to protest American involvement in an ongoing conflict with Israel, and these nations struck the country where it hurt, depriving them of oil in 1973 and again in 1977.
One of the most immediate effects of the embargo was skyrocketing energy prices as a result of limited supply and heavy demand. Rationing went into effect, with supplies of petroleum products being carefully doled out with ration cards and flag systems, in which people could take turns buying gas and other fuels on the basis of license plate numbers. At the same time, the stock market contracted radically, an event that foreshadowed future stock market instabilities linked to the price of oil.
The 1970s was also an era in which environmentalism was becoming mainstream. Environmentalists went from what many considered the "lunatic fringe" to the heart of social consciousness as they argued that high energy consumption was damaging the environment and crippling the United States. The energy crisis, combined with more interest in environmentalism, brought about a rise in interest in alternative sources of energy and fuel efficiency.
Politically, the government struggled to deal with the crisis. The Watergate scandal erupted