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Nowadays, it does exist a general awareness about climatic change and its implications for the environment across the world. The Paris agreement (2015) agreed that greenhouse gas emissions should be reduced to 0%. For this reason, many countries are in search of innovation, development, and application of energy generation systems from renewable resources (solar, geothermal, hydraulic, wind), which are capable of covering the great trail that fossil fuels (oil) leave. Colombia has committed to achieving a reduction of 20% in the emission of greenhouse gases by 2030. To accomplish this common worldwide objective, the governments of the different countries have established energy policies and incentives that allow the transition of the economy based on fossil fuels to clean energy. Countries such as the USA, Mexico, Spain, Japan, Australia, and Germany have implemented solar plants (CSP) coupled with thermodynamic cycles such as the supercritical Brayton, where the working fluid is in supercritical conditions. Colombia does not possess a great development in this sector even though it has a huge potential, especially the north part of the country, for the implementation of solar energy. Just as some countries, so too, Colombia can improve its economy through the use of renewable energies if it implements more supporting policies. There are already studies and researches that insists on the previous statement. One of those, which includes the simulation of a solar plant, estimated that a plant in Barranquilla could supply about 50% of the demand with an approximate LCOE of 9.76 cents/KWh. This work shows the different national and international policies, measures, regulations, projects, and laws taken to encourage this change as well as to show the energy potential that has the solar power concentrating solar power (CSP) as an option to diversify the energy matrix of Colombia.

Many of the more developed countries and other members of the United Nations organization are already working hard on energy transition issues, which is nothing more than the independence of fossil energy sources and the technological foray into clean energy sources. This independence is generally achieved by replacing conventional energy sources with alternative renewable sources, and because of this, it is also necessary to adapt or replace systems using these conventional sources with systems using alternative sources. In the United States of America, they have set to work seeking to reduce dependence on oil and increasing the production of natural gas and biofuel, which will save eighteen hundred barrels of oil. In England, decarbonization and energy efficiency increase plans are carried out that proposes an 80% reduction in emissions. Likewise, efforts are made in the European Union to increase energy efficiency and renewable energy, as well as CO2 capture and nuclear energy generation, as well as cost reductions of all renewable energies of up to 53%. For its part, China represents almost half of the world's investment in renewable energy in something they call the energy revolution, despite the fact that it has also been a major importer of oil. In Latin America, Brazil is aiming at decarbonization by designing adequate mechanisms and policies for sustained development in the use of renewable energy sources, in addition to increasing the use of solar electric power generation sources, among others. In this paper, you can find the efforts made and projections on energy transition in some countries.