Answer
Oct 30, 2025 - 01:13 PM
Yes, dusk to dawn LED light bulbs use a very small amount of electricity even when the light is off because their built-in photo sensor must remain powered to detect changes in ambient light. This standby energy use is minimal, typically less than half a watt, and is negligible compared to the power consumed when the light is fully on. Despite this, dusk to dawn bulbs remain highly energy-efficient and are one of the best options for automated outdoor lighting.
