Never before in the history of mankind has the role of energy from renewable sources been so crucial. 30% of global electrical energy is "clean" and produced by the sun, wind, tide and other renewable sources. It is still, however, experimental.
Investments in the development of new sources of "clean" energy and modernisation of those already known amounted to nearly $ 400 billion. Due to this, harmful emissions into the atmosphere have been reduced by 1.1 billion tons per year, and this number continues to increase.