It is estimated that world's supply of oil will run out within about 50 years. What consequences may it have on our society？

 Considering environmental issues, most developed countries will convert most of their energy needs into renewable energy by reducing the use of fossil fuels before they run out of petroleum energy. There is already a discussion on the use of fossil fuels among developed countries, and each country has agreed to reduce the use of fossil fuel energy. In the case of Germany, which has succeeded in energy conversion, according to Fraunhofer, the Solar Energy System Research Institute, in 2018, renewable energy such as wind power, solar power, and biomass in Germany for the first time exceeded 40% of power generation. As such, advanced countries are already responding quickly to energy conversion, and when petroleum energy runs out, most advanced countries will use more than 70% of their energy use as alternative energy.

  Developing countries will not be able to develop renewable energy and will either buy energy from developed countries or use other alternative energies that are not used by developed countries, such as nuclear power. Developing countries are not able to make large investments in renewable energy projects with low added value, so when petroleum energy runs out, it is highly likely that other countries will buy energy. Otherwise, it will use resources that have already been developed, such as natural gas or nuclear power, but not used by developed countries.

  Poor countries will not have enough money to develop or buy energy, so they will live with energy shortages. This is already happening in many underdeveloped countries. In the case of North Korea, various social infrastructures are collapsing due to the inability to import fossil fuels. In the case of roads, it is said that the roads are split because they cannot be managed, and trains often stop even when they are not. In this time when petroleum energy runs out, the importance of securing energy becomes greater than it is now, and the response to this will vary depending on the economic power of each country.

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