Solar powered LED street lights uses Promptec LED Lights, which are the best model in its category in the world and saves 60 to 70% energy when compared to conventional lights. Highly Optimized thermal design for guaranteed LED lifeDust and water protection design meeting IP65 standardsAvailable in A/C, D/C solar and hybrid modelsHigh precision constant current LED driver (Greater than 90% efficiency)Optimized electrical and thermal design to deliver life greater than 15 yearsIntegrated with industry leading LED's of 120 to 150 Lumen / Watt with LM80 certificationsHighly optimized photometry to achieve greater than 80 Lm / Watt efficiency with LM79 Certification