Orta Anadolu'daki PV modüllerinin uzun vadeli performans ve bozulma oranları

Outdoor tests of photovoltaic modules are crucial for the market, and technological development. It is vital for manufacturers and researchers to conduct tests not only in the long term but also in different climatic conditions. In this thesis, 12 modules are tested in Middle Anatolia climate conditions for nine years in three different module groups, which are mono-crystalline (Mono-Si-1 \& 2 \& 3, Bifi-Mono-Si, HIT), poly-crystalline (Poly-Si-1 \& 2), and thin films (CIS-1 \& 2, CIGS-1 \& 2, $\mu $Si/a-Si). We analyzed the efficiencies of solar PV modules with nine years of data collected from Middle Anatolia. The most effective module is the Bifi-Mono-Si with 16.47 \% as expected and the second effective module is HIT with 14.82 \% efficiency. In addition to efficiencies, performance ratios are investigated and Mono-Si-1 has the highest performance ratio on average. Furthermore, we analyzed the weather corrected performance ratio of 5 modules (CIS-1 \& 2, $\mu $Si/a-Si, HIT, Poly-Si-2) and the HIT module obtains the best corrected performance ratio on average. Finally, we utilized efficiencies and performances ratio values to estimate the degradation rates of solar PV modules. We found the following degradation rates for modules: 0.80 \%/year for Mono-Si modules, 1.95\%/year for CIS modules, 0.68 \%/year for a-Si, 1.42 \%/year for Poly-Si, and 1.09 \%/year for HIT module. Considering all results, Mono-Si is the best option for long-term usage and development.