There are many differences in LED and HID technology for plant growth. Arguably, the largest difference facing growers is up-front cost because LED systems are much more expensive to purchase than HID systems. On the contrary, maintenance of an LED system is minimal as you do not need to regularly change out lamps to maintain spectral output. In the charts below, we’ve summarized some of the other differences. Note: This is only a guide. Actual numbers may vary.