The rapid growth of the population in the last hundred years, the strengthening of the economic activity of mankind, the development of international trade, as well as the increasing needs of mankind for energy and material goods, had and will have negative consequences on the quality of the environment, which are already manifested through the ever-present climate changes . Environmental problems have taken on dramatic proportions because they directly affect people's health and threaten the survival of life on Earth. Harmful ecological-economic consequences for the environment are manifested, not only in the area of pollution and depletion of natural resources necessary for life, but also in the area of a complete reduction of the quality of the environment in certain areas where life and economic activity cannot be continued either ecologically or economically. In such an environment, the concept of steady or sustainable development was created. Accepting such a conception of development, the economy must be trained for a new organization regarding the use of natural resources and new state economic and environmental protection measures. The economy needs to set new goals for environmental protection. In such new environmental conditions, the economy has to deal more with research and development projections, thus taking into account the growing interest in environmental protection. The subject of this work is to investigate current theoretical and applied phenomena of principles, instruments, legality and theories of sustainable development. The aim of the work is to investigate and show, on the example of the PwC business system, how it systematically contributes to the achievement of the goals of sustainable development and environmental protection.