Borisova, O. 2026. LEGAL TRANSFORMATION OF THE BULGARIAN ENERGY SECTOR: FROM A CENTRALIZED MODEL TO A DECENTRALIZED REGULATORY FRAMEWORK FOR RENEWABLE ENERGY SOURCES AND RENEWABLE ENERGY COMMUNITIES. Proceedings of the International Conference on Secure Systems Design and Technology Development. 3, (Sep. 2026), 371–377. DOI:https://doi.org/10.68302/std2026.vol3.25.