If we could look at the world today from an ecological perspective, then it would be possible to see that it is facing numerous challenges. The mentioned challenges include various ecological problems, among which the issue of environmental pollution is certainly the most significant, but there is also the overpopulation of the Earth, the problem of electrosmog, and the impact of all these problems on both the environment and humans. For this reason, the economy should primarily focus on sustainable development, which as such implies the use of renewable energy sources. For example, wind energy is used for the operation of wind power plants or the solar energy is used for the operation of solar power plants. All of these collectively can be called a circular economy, i.e. an economy where the goal is to encourage the sustainability and circulation of materials within the production process. The potential usage of renewable energy sources in the future is great, and therefore all resources and knowledge should be directed towards the mentioned concept, given that it guarantees above all the preservation of the environment, but also positive impacts on humans.