There are a few growth variables that can help you determine the total area that LED grow lights cover. First of all, keep in mind that different plants require different lights. Low-light plants include herbs and leafy greens like basil and lettuce, while high-light plants include, amongst others, tomatoes and peppers.
The growth phase or stage will also adjust the amount of LED lights needed. Thus, seedling, vegetative, and flowering plants all need a specific amount of light to thrive.
Lastly, a larger grow area will be in need of more power. As we previously mentioned, the average LED grow light counts for approximately 32-33 watts to cover one square foot. LED lights can be up to 40% more efficient than regular HID lights, helping you save energy and reducing your costs.
Following the previously mentioned formula, a 1000-watt LED grow light can usually cover an area of around 32 square feet or slightly more.