Sterjova, Marija, and Dragan Minovski. “TECHNO-ECONOMIC EVALUATON OF RETROFITTING A 210 MW THERMAL HEAVY-OIL POWER PLANT WITH A PHOTOVOLTAIC SOLAR THERMAL ENERGY STORAGE SYSTEM USING MOLTEN SALT: A CASE STUDY OF TEC NEGOTINO”. ETIMA 2, no. 1 (March 13, 2024): 45. Accessed September 9, 2025. https://js.ugd.edu.mk/index.php/etima/article/view/6463.