The article explores the impact of renewable energy sources on ensuring environmental safety and legal regulation of innovative activities. The authors emphasize the importance of developing alternative energy, particularly solar, wind, hydro, and bioenergy, as one of the key elements in sustainable development strategies. The article analyzes national and international legal acts that regulate activities in this field and provides an overview of the most effective legal tools to promote the use of environmentally friendly energy sources. The author highlight the need to improve the regulatory framework to protect the environment and encourage innovation in the energy sector, stressing the importance of collaboration between the state, business, and civil society. The article also examines the main obstacles that hinder the development of alternative energy in Ukraine and globally, and proposes ways to overcome them. In conclusion, the emphasis is placed on the fact that the implementation of renewable energy sources is not only a means of environmental protection but also a foundation for creating a legal environment that fosters innovative approaches to addressing global environmental challenges.