How much electricity does a grow tent use?

(Last Updated On: July 6, 2021)

It is no news that grow tents consume energy when grow lights are used. There are many assumptions on how much electricity a grow tent may use, which is why you’re right now reading this article.

Grow lights have become necessary for grow tents as they help with the exposure of more light concentration and give the amount for the plant to produce.

Besides that, electricity is also much consumed during the fanning process and ventilation system as well.

The rate of consumption of energy for a grow tent.

The power consumption rate of the grow tent ranges from 2000 to 3000 kWh. However, it depends on the kind of light one chooses to use in their grow tent.

If the LED light is powerful, it uses a lot of energy. LED grow lights are, however, more efficient than any other lights to use in a grow tent.

How Much Electricity Does a Grow Tent Use?

To calculate the amount of power consumption that your LED grow lights use in the grow tent would require two factors. Firstly it is essential to know the wattage of light and how much light is being run per day.

  • Factor 1- Wattage of Light: when buying grow lights, the wattage of light can be taken from the seller. For example, if the light consumes 404 watts, it means that the light runs 404 kilowatts. To get the calculation of how much the specific light runs in an hour, we will have to divide kilowatt by hour. So dividing 404 kilowatts by 1000 comes as 0.404 kw/h.
  • Factor 2-number of lights: different plants take an additional amount of lights to run per day. If you’re planting cannabis, the grow lights can run for about 18 hours a day while vegging and 12 hours a day when flowering. When opting for the number of lights for each tent, it is necessary to consider both calculations that include vegging and flowering.

Cost Calculation of Electricity Consumption of Grow Tent

Indoor grow tents usually operate owing to the size and space of the room. The scale of operation is critical to consider when calculating the energy consumption of the grow tent. However, lights aren’t the only focus factor when finding out how much electricity a grow tent uses. Other cost calculations of the electricity that grow tent uses are:

  • Space heating: grow tents use almost 5% of electricity for space heating. This energy makes up for the heat consumption of the plants used per square feet of the grow tent space.
  • Water pumping: almost 3% of energy is used in water pumping. Since cannabis plants need indoor pumping, the amount of electricity in this sector is a bit more than other factors.
  • Drying: Among all the factors that fall under the energy consumption of grow tents, drying is at the bottom, using just 1% of the total electricity.
  • CO2 injection: who knew that electricity needs to be spent on CO2 injection in plants? Well, grow tents use 2% of energy consumption from the total electricity for CO2 fixing.
  • Lighting: the most significant amount of electric supply that a grow tent needs is for lighting purposes. Grow tents use a whopping 38% electricity for grow lights making the cost higher in this sector. Hence, creating a budget for lighting is very important.
  • Ventilation, dehumid, and cooling: ventilation and space are a necessity for any indoor plant. No matter what the phase is, vegging or flowering, these factors are essential to look into. Ventilation, dehumid, and cooling uses about 51% of electricity for its use.

Electricity used in different phases of grow tent

Vegging stage: the average number of hours spent during the vegging phase is 18 hours each day. If we divide the steps into dark and light cycles, the cycle will get 6 hours off daily.

Flowering stage: the flowering stage needs a little less energy than the vegetative growth phase. The dark-light cycle is 12 hours on and 12 hours off. So the flowering phase needs 12 hours of electricity supply every day.

 Lowering the electricity demand of the grow tent

A lot of the time, cannabis or plants that you’re harvesting fail to grow because of the impact of increased electric supply for maintaining the overall plants. Saving energy and cutting off on electricity bills is a crucial task when understanding the need for your indoor plants.

Since indoor grow tent and cannabis plants need at least 10 times more energy compared to typical buildings, one needs to be calculative about spending energy on grow tents. The consumption of energy for grow lights is much higher than standard lights. It is almost 85 times higher than the regular light for one single LED light.

Using the guidelines below will help you not waste energy and be much more calculative on using the right amount of energy as per need.

  1. Choosing lights suitable for efficiency: a great energy-efficient option is LED light rather than high wattage HID/ HPS grow lights. LED lights produce less heat which means one does not need to spend much on ventilation and cooling. Cutting out on such factors will help cut off energy consumption.

Furthermore, CMH lights are also a great sustainable option, although they are on the pricier side. Since CMH lights consume less energy, you don’t have to worry about a high electric bill. A 315w CMH light is equivalent to a 600w MH light that gives off the same intensity.

  • Using the right fan: using too many fans that cost less will ultimately cost more energy consumption and electric bills. Using one single high efficient fan is enough for excellent output and less energy consumption. A 440 CFM fan is a great option for cooling rather than going for 4 to 6 small fans. The energy consumption of this fan is approximately 150 to 170 watts. Avoiding using too many fans can ultimately result in high electric bills at the end of the month. To look for just the right fan, one should look for a system that vents heat appropriately. An exhaust fan is just enough for an average grow tent.

Conclusion: it is vital to know how much energy a grow tent can use when starting your journey with a grow room and understanding the functions of different tools in your grow tent. Budgeting efficiently for each tool can save you tons and make your grow room give the results that you’re expecting!

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