TY - JOUR T1 - Solar energy potential assessment and investment profitability analysis: The case of North Macedonia AU - Kaya, Hakan PY - 2026 DA - March Y2 - 2026 DO - 10.58559/ijes.1787421 JF - International Journal of Energy Studies JO - Int J Energy Studies PB - Türkiye Enerji Stratejileri ve Politikaları Araştırma Merkezi (TESPAM) WT - DergiPark SN - 2717-7513 SP - 43 EP - 83 VL - 11 IS - 1 LA - en AB - This study presents a novel integrated framework that combines meteorological data analysis, machine learning forecasting models, clustering techniques, and economic modeling to offer the first data-driven investment roadmap for solar energy in North Macedonia. High-accuracy solar radiation forecasts for 2025 were generated using the Gradient Boosting Regression model (R² = 0.953) using NASA POWER data for the period 2020–2024. Cities were grouped into clusters based on their climatological characteristics; cities such as Štip, Veles, and Kavadarci demonstrated the highest solar potential and economic efficiency. Economic analyses identified payback periods of 3–5 years and average ROI (Return on Investment) values ​​exceeding 24%. It was determined that increasing electricity prices linearly affected the ROI, reaching 33% with an increase in price to $0.12/kWh. The findings highlight the importance of a new integrated decision-support framework merging ML-based solar forecasting, spatial clustering, and dynamic economic modeling tailored for data-limited emerging markets such as North Macedonia KW - Economic feasibility KW - Investment analysis KW - Machine learning KW - North Macedonia KW - Solar energy CR - [1] Spasić V. Solar PV panels installed on 108 public buildings in North Macedonia. Balkan Green Energy News 2019. 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Available from: https://unece.org/sites/default/files/2021-12/ECE.CEP_.186.Eng_.pdf. Accessed: January 7, 2026. [Online]. UR - https://doi.org/10.58559/ijes.1787421 L1 - https://dergipark.org.tr/tr/download/article-file/5257231 ER -