LONG-TERM POWER PURCHASE AGREEMENT FOR PHOTOVOLTAIC ENERGY AS A SOLUTION FOR ENHANCING THE PROFITABILITY OF THE TASHMARUNISHTA PUMPED-STORAGE HYDRO POWER PLANT: UDC: [621.311.214+621.311.243](497.782). etima [Internet]. 2025 Oct. 27 [cited 2026 Apr. 26];3(1):75-86. Available from: https://js.ugd.edu.mk/index.php/etima/article/view/7557