The price of electricity and gas has reached unimaginable record highs, breaking one record after another over the last year, especially in recent months. But this problem is not unique to Spain; Europe is currently going through difficult times, and this rise in prices has had a direct effect on the pockets of consumers of these goods, making it impossible for many of them to pay their energy bills every month, which, added to the fact that we are facing a climate emergency, has led more and more countries to make use of nuclear energy. France and the United Kingdom advocate this energy as a key element in meeting our energy needs, as well as helping to reduce greenhouse gas emissions.However, despite the fact that nuclear energy has been generating debate for decades, last December, the European Commission stated that this production would gain weight and would be considered as "clean energy". The European Union will invest half a trillion euros in new atomic reactors between now and 2050 for the transition to decarbonized energy.The project presented to the EU-27 by the European Commission would also aim to promote Europe's energy independence, given its heavy dependence on Russia, which supplies 38% of its natural gas.Currently, nearly 450 reactors worldwide supply nuclear power to several nations, combining for approximately 10% of the world's electricity. Although some countries are turning to nuclear power as a clean energy source, nuclear power generation has experienced a slowdown since its peak in the 1990s.As this table shows, only 15 countries will account for more than 91% of global nuclear power production in 2020, according to data from the Power Reactor Information System (PRIS).The United States produces more than 50% of the country's clean electricity through nuclear power, while China is the world's second largest nuclear power producer. This country includes different plans to achieve its climate objectives, such as the construction of 150 new reactors by 2035, a project that could cost up to 440 billion euros.Opinions on this energy in the European Union are mixed. France is in third place in the ranking given that its production represents 13.3%, almost on a par with the Asian country. French President Emmanuel Macron has announced his intention to launch the construction of new reactors to renew the current fleet, which generates 70% of the country's electricity, but other EU countries have been reticent about Brussels' announcement to consider nuclear energy as a "green" fuel. In this sense, although Germany ranks eighth in the ranking, it has already closed three of its six nuclear power plants, and by the end of 2022 it plans to close all atomic production.In the case of Spain, our country ranks ninth in the ranking, with 2.2%, however, this will not last long. The Executive has given 18 months to plan the closure of nuclear power plants and by 2035 the seven operational reactors that the country has will be closed.Despite the reluctance of European countries to maintain this atomic production, these are in turn the ones that consume the most nuclear energy, including France, where it is the country's largest source of electricity. It is also curious that few of them are the leading producers of nuclear power in absolute terms, as in the case of Slovakia which ranks second, nuclear power accounts for 53.6% of the electricity mix, although the country's four reactors account for less than 1% of the overall operational capacity. It is followed by: Ukraine (51.2%), Hungary (48.0%), Bulgaria (40.8%), Belgium (39.1%), Slovenia (37.8%) and Czech Republic (37.3%).The United States, meanwhile, ranks 17th by share of nuclear power in its mix, despite producing nearly 31% of the world's nuclear electricity in 2020. This is largely due to size and population. European countries are much smaller and produce less electricity overall than larger countries such as the US or China.