1000W LED Grow Light: The Ultimate Guide

1000W LED grow light is advantageous for indoor farming since they cover a larger area. 

Additionally, you don’t need to place them close to the plants meaning that you can save on the costs of installing a cooling system. 

However, they are powerful, meaning you must install them well for maximum plant growth and yield. And that’s where we come in. 

Today’s article reviews 1000W LED grow lights, selection tips, and the plants they can support. Let’s get going.

Benefits of 1000W LED Grow Light

Statistics showing energy consumption and uptimes of different lighting systems

(Statistics showing energy consumption and uptimes of different lighting systems)

Here are the benefits of 1000W LED grow lights:

Adequate Light Intensity

1000W LED grow lights supply higher-intensity light than lower-value LEDs, encouraging better yields. 

For instance, they can easily supply 1,500 umol/s which is important for flowering. 

Higher Efficiency

A 1000W LED grow light converts close to 90 percent of power to light energy. 

In comparison, traditional light sources convert less than 10 percent while losing the rest in heat. 

Longer Lifespan

1000W LED grow lights last longer than 60,000 hours of service, equivalent to an excess of 20 years. 

On the other hand, traditional lighting systems don’t exceed 10,000 hours.

Covers a Larger Area

A single 1000W LED grow light covers an area of 25 sq. ft or an equivalent spacing for six plants. 

As such, you can install fewer lights and, in the end, save on installation costs. 

Moreover, the light’s broad spread ensures that all plants within its reach get the right intensity and quality of light. 

Tips for Selecting 1000W LED Grow Lights

Growing cannabis under LED grow lights

(Growing cannabis under LED grow lights)

Acquiring the best 1000W LED grow lights is essential to ensure you get the best from your plants. 

Therefore, here are the points you need to take into consideration.

PAR range

Photosynthetic active radiation (PAR) is the quality of light that plants need for optimum growth. 

In an indoor garden, LED grow lights emit a wide spectrum of wavelengths, some of which may not be beneficial for the plant. 

As a result, pick 1000W to grow lights that emit a lot of PAR in 400 to 700nm ranges.

Photosynthetic Photon Flux Density (PPFD)

The PPFD is the amount of PAR that reaches and gets into your plant through absorption. 

In other words, it measures the micromoles per square meter per second (umol/m2/s). 

Sometimes, a grow light can have a high PAR range, but due to placement, the light won’t reach the plant. 

For such a case, buy those with a high PPFD for better plant growth and yields.

Heat Management

LEDs emit less heat than traditional lighting systems like fluorescent and incandescent lights. 

Keeping them too close to the plants leads to bleaching, burning, or even irregular growth. 

However, you may opt for heat sinks and fans if you don’t have proper ventilation. 

Power Consumption

Avoid power-intensive LED grow lights that will increase your total electricity bill. Remember, the wattage rating of the grow lights may be lower than the actual power consumption. 

Consequently, use a wattage meter to know a LED grow light’s power consumption before embarking on large-scale installation. 

Determining How Many Watts Your LED Grow Light Consumes

Using an electric fan to manage heat in an indoor marijuana farm

(Using an electric fan to manage heat in an indoor marijuana farm)

The easiest way to determine the watts your LED grow light consumes is by looking at the product specifications from the manufacturer.

 Furthermore, you can contact the manufacturer with the specific product description and get its power consumption. 

But you can use a power or wattage meter if you can’t access the product specification. Here are the steps to follow: 

  • First, plug the LED grow light into a wall outlet
  • Second, plug the wattage or power meter into the same outlet
  • Third, flip the switch to turn on the LED grow light
  • Fourth, look at the meter, as it will automatically display the power consumption of your LED grow lights

Another method is taking the general LED wattage per coverage area during a particular growth stage. 

For example, a one-foot square LED consumes roughly 40 watts, whereas a six by 6-foot square one uses 1440 watts. 

However, this method can be inaccurate since individual LED grow lights have varying wattages.

How Many Plants Should Your 1000W LED Grow Light Support?

Organic hydroponic vegetable farm

(Organic hydroponic vegetable farm)

The number of plants that a 1000W LED grow light supports depends on the size of the plant

Generally, a 1000-watt grow light surrounds a space of about five by 5 feet or an equivalent of 5 to 7 plants. 

The number of plants you can grow in such an area varies from plant to plant. Some plants grow to occupy more room, and you must space them well. 

Additionally, the number of plants that a LED grow light supports depends on the light’s lumen output, quality, and the plant’s needs. 

Moreover, some manufacturers don’t provide a good PPFD footprint showing the proper grow light coverage. 

As such, they mislead farmers into overpopulating or under populating their indoor farms. 

The best 1000W LED grow light PPFD footprint shows the wavelength spread and intensity across the 25 square foot area. 

If yours doesn’t, there’s a high chance that the LED grow light concentrates all the light directly beneath it due to its poor light spread.  


How far should your 1000W LED grow light be from the plants? 

Generally, the higher the wattage, the greater the distance between the grow lights and the plants.

 Therefore, LED lights of 1000W and beyond should sit between 36 and 46 inches on top of the plant. 

Conversely, lower-wattage lights (lower than 200W) should sit between 12 and 20 inches above the plant. 

All LED grow lights falling between 200 and 1000W should be between 20 and 36 inches above the plant.  

Remember, you should design your indoor farming environment so that plants benefit most from the available resources, like light and nutrients. 

Additionally, consider the photosynthetic active radiation (PAR), the light type most suitable for the growth stage in supporting photosynthesis. 

Generally, its wavelength ranges from 400 to 700nm. 

How many lumens is 1000W light? 

The lumens that a 1000W light produces vary significantly, with the majority ranging from 15,000 to 110,000 lumens. 

However, the higher lumen output is specific to high-intensity discharge lights, while the lower output is synonymous with low-discharge incandescent lights. 

For instance, an LED bulb can produce more than 100 lumens per watt.

 Now for 1000W, you’ll get about 100,000 lumens, making the light very bright. 

How long is a 1000W LED light?

Growing plants using LED grow lights needs proper planning to ensure they get the right wavelengths to promote growth and yields. 

As such, the length of a 1000W light varies depending on the specific design. 

For instance, it can be a 10-meter-long strip, a 1-meter tube, or even a bulb, as manufacturers design grow lights in different shapes and sizes. 

We recommend researching the specific 1000-watt LED grow light before buying it. 

Moreover, look at the product specifications you’ll get from the manufacturer as it helps you know the best 1000W LED design for your indoor garden. 


Unlike outdoor gardens, indoor farms need better organization and planning to ensure you reap what you sow. 

You must be willing to spend more time regulating the light reaching your plants at all growth stages, from seeding to yielding. 

You must also know the intensity and hours you expose your plants to lights.

 Failure to do so will lead to poor yields and, in some cases, massive financial losses. 

Therefore, deliberately select the best LED to-grow lights for your plants to be profitable.