US gas turbine market from 1965-1990, with forecast to 2000, (at right) shows how the northeast blackout of 1965 accelerated the growth of electric utility market for gas turbines in the US. Later events, most notably the 1973 Arab Israeli war, followed by the 1974 OPEC oil embargo and the U.S. Fuel Use Act of 1978, caused a steep decline. A strong recovery followed with the rise of the Independent Power Producer ("IPP") cogeneration market under the Public Utility Regulatory Policy Act (PURPA), upheld by the US Supreme