Perched on the southwestern edge of Europe, Spain has played a relevant role in European history for several centuries. Today, it finds itself, together with the world’s industrial nations, in the need to decarbonize large sectors of its economy in order to prevent the most severe consequences of climate change, and to do it while guaranteeing continued prosperity for its citizens. Nuclear power, with its minimal land and material requirements, its abundant and reliable production, and its tiny amount of waste produced (none of which of greenhouse effect), presents itself as a key tool to achieve this goal. At present, it contributes to over a fifth of Spain’s total electricity consumption. However, there are currently plans to close all of our nuclear power generation by the year 2035. Spain, then, faces a crucial decision that will influence its future, and Europe’s, for years to come.
The history
José Cabrera Nuclear Power Plant (source: RTVE)
The reader may be surprised to learn that Spain built and operated one of the very first nuclear power plants in Europe. Indeed, the José Cabrera Nuclear Power Station entered commercial operation just 15 years after the world’s first nuclear power plant, in 1969.
This impulse continued into the 1970s, with an ambitious nuclear buildout along the lines of France’s Messmer Plan. Over a dozen new reactors were being planned by the end of the decade (when Spain’s population was about 36 million), and a robust nuclear technology industry was being developed domestically, including nuclear fuel manufacturing. 
Share of primary energy from nuclear power, by country
1989 marked the last commissioning of a new nuclear power plant, and the highest percentage of electricity generated by nuclear power, at 38%.
However, by that point the nuclear industry was running into the same political headwinds that it faced in several other countries. The fear of nuclear weapons and accidents like the one at Three Mile Island were feeding the nascent anti-nuclear movement. In this context, the Spanish Socialist Worker’s Party (Partido Socialista Obrero Español, PSOE) ran in the 1982 general election, only the second one since the end of the military dictatorship, with a moratorium on new nuclear builds in their program, and won by a landslide.
Less than two years later the moratorium was in place, and no new power plants would start construction. 1989 was the last year a new nuclear station started operating, and the year where we achieved the highest percentage of nuclear electricity generation, at 38%.
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