The primary disadvantage of high-intensity discharge (HID) grow lights is their significant power consumption. HID bulbs use a great deal of electricity, making them costly to operate and potentially creating an increased risk for electrical hazards in the growing environment. HID bulbs generate large amounts of heat, which can be difficult to manage if proper ventilation and cooling systems are not in place. Due to the intensity of the light produced by these bulbs, they must be kept at a distance from plants that cannot tolerate too much exposure.