> That strain was further relieved by additional oil and gas production in many parts
of the world and partial replacement of fossil fuels by nuclear power
> In this changed balance between supply and demand, the cost to utilities of fossil fuels
dropped substantially after the early 1980s.
> In 2001, despite a very high price for natural gas during the first part of the year, the average fossil fuel cost to utilities—dominated by the price of coal—was less than one-half the cost
in 1981, expressed in constant (i.e., inflation-adjusted) dollars.
> During part of this period, nuclear power costs rose.
> Thus, in many countries, including the United States, nuclear power lost its cost advantage over coal and even natural gas.
Fascinatingly this work paints a different picture. Note the sequence of events:
1) Fossil fuel expensive.
2) OPEC (etc.) pumps more oil out of the ground to regulate prices.
3) At the same time some places in the world take steps to avoid using fossil fuels.
4) This increased supply, and lowering in demand, makes for accidental lower prices for fossil fuels.
5) This culminates in a reduced demand for the better energy production from nuclear power.
Nuclear power wasn't made profitable in the US during this period because of the actions of other countries beyond the US and to a lesser extent the OPEC countries.
Bodansky, D. (2007). Nuclear energy: principles, practices, and prospects. Springer Science & Business Media.