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 [Internet]. 13. März 2024 [zitiert 3. Oktober 2025];2(1):45. Verfügbar unter: https://js.ugd.edu.mk/index.php/etima/article/view/6463