This study investigates whether improved nighttime light data can forecast economic output by sector within regions. Analyzing 81 Turkish provinces from 2004 to 2020, we found that urban NTL data is most strongly correlated with non-agricultural GDP, particularly in the industrial sector. The findings suggest luminosity measurements could help policymakers identify economically disadvantaged areas, assess development initiatives, and direct funding appropriately. However, the research notes constraints in tracking yearly GDP fluctuations, underscoring the importance of combining satellite imagery with supplementary economic metrics for thorough analysis.