When sourcing for Europe, prioritize Luminous Efficacy of at least 130-160 lm/W to ensure energy efficiency. The Color Rendering Index (CRI) should typically be Ra > 70 or 80, and the Correlated Color Temperature (CCT) should align with local urban planning (e.g., 3000K for residential areas to reduce light pollution or 4000K-5000K for main roads). Ensure the driver is a high-quality brand (like MeanWell, Inventronics, or Philips) with a Power Factor > 0.95 and Total Harmonic Distortion (THD) < 15%.