“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, vol. 2, no. 1, p. 45, Mar. 2024, Accessed: Oct. 03, 2025. [Online]. Available: https://js.ugd.edu.mk/index.php/etima/article/view/6463