在全球能源轉型與淨零碳排趨勢推動下，太陽能發電已成為重要之再生能源發展方向。隨著國內太陽能案場數量逐年增加，如何有效提升案場發電績效與營運效益，已成為產業界與學術界關注的重要議題。相較於單一案場研究，多案場實證分析更能全面比較不同區域與設置條件對發電績效之影響。 本研究以台灣北部、中部及南部多座太陽能案場為研究對象，蒐集近三年度（2022年至2024年）之營運資料，包含裝置容量、使用年限、案場類型、模組面向、傾角、年度發電量及性能比（Performance Ratio， PR）等資料，並以單位容量發電量作為主要績效衡量指標。研究方法採用描述性統計分析、單因子變異數分析（ANOVA）、事後比較分析及相關分析，以探討不同案場特性對發電績效之影響。 研究結果顯示，不同區域之太陽能案場發電績效存在顯著差異，其中南部地區整體發電表現優於中部及北部，顯示日照資源條件對發電績效具有重要影響。在案場特性方面，不同案場類型、模組面向及傾角配置皆對單位容量發電量具有顯著差異，其中以特殊地面型案場、南向配置及低傾角（0–10度）之發電表現最佳。此外，案場使用年限與發電績效呈顯著負相關，代表設備使用年限增加後，發電效率有下降趨勢。 綜合研究結果，本研究歸納高績效太陽能案場多具備「南部區域、特殊地面型場域、南向配置、低傾角設計及較新設備年限」等特徵。研究成果可作為太陽能案場選址規劃、系統設計、營運管理及投資評估之實務參考，並提供後續相關研究之基礎。;Driven by the global energy transition and net-zero carbon emission goals， solar power has become a key source of renewable energy. As the number of solar photovoltaic (PV) sites in Taiwan continues to grow， improving generation performance and operational efficiency has become an important issue. Compared with single-site studies， multi-site empirical analysis allows a more comprehensive evaluation of regional and site-condition effects on performance.
This study examined multiple solar PV sites in Northern， Central， and Southern Taiwan using operational data from 2022 to 2024. The collected data included installed capacity， service life， site type， module orientation， tilt angle， annual generation， and Performance Ratio (PR). Specific yield was used as the main performance indicator. Descriptive statistics， one-way ANOVA， post hoc tests， and correlation analysis were applied.
The results showed significant regional differences， with Southern Taiwan achieving better performance than Central and Northern Taiwan. Site type， module orientation， and tilt angle also had significant effects on generation performance. Special ground-mounted sites， south-facing systems， and low tilt angles (0–10°) performed best. In addition， service life showed a significant negative correlation with performance， indicating that older systems tended to generate less efficiently.
Overall， high-performing solar PV sites were generally characterized by Southern location， special ground-mounted design， south-facing orientation， low tilt angle， and newer equipment age. The findings can serve as practical references for site planning， system design， and operation management.
