How much electric cost to run LED Grow Lights?

What lighting equipment you are using now for your plants?

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Spiderfarmerled

Spiderfarmerled

Well-Known Member
Rollitup Advertiser
Does LED Grow Lights Use A Lot of of Electricity?:?:
It depends on the light. A powerful LED grow light uses a lot of electricity. But it uses less than other forms of light that give you the same output.

They are more efficient than any other type of lighting, which basically means you pay less in power costs to get the same results. But you will still have a large monthly power bill. It just won’t be as large as it would be with HID lights or any other type.

How to calculate the electric bills?
Calculating how much electricity an LED grow light uses is not that difficult. Please find the following information firstly.
  • The actual wattage of the light
  • The number of hours the light is running per day
Electric Bills=Energy in Kilowatt-hours X Number of Hours used per day X Cost of Electricity (kW/h)
For example: Use a 400W led grow light, 12 hours per day during flower growth.
Because power companies use kilowatts (kW) per hour, we need to convert 400 watts to kw/h. To do this, simply divide the wattage by 1000. That gives us a power draw of 0.400 kw/h.

Now we can calculate the kilowatt-hours by multiplying those two numbers (0.400 kw/h x 12 hours). That gives us a power consumption of 4.800 kilowatt hours.

In order to figure out the cost, you need one more piece of information: your electricity rate. (For example, 12.83 cents per kilowatt-hour ($0.1283/kWh).
That gives us a daily cost of running a 400 watt LED grow light of 4.800 kWh x $0.1283/kWh = $0.616 per day.
Multiply by 30 to get the monthly operating cost is $18.48 per month.

Welcome to share your bills, let's check what's the cost-effective:bigjoint::bigjoint:

bills.jpg
 
PadawanWarrior

PadawanWarrior

Well-Known Member
Spiderfarmerled said:
Does LED Grow Lights Use A Lot of of Electricity?:?:
It depends on the light. A powerful LED grow light uses a lot of electricity. But it uses less than other forms of light that give you the same output.

They are more efficient than any other type of lighting, which basically means you pay less in power costs to get the same results. But you will still have a large monthly power bill. It just won’t be as large as it would be with HID lights or any other type.

How to calculate the electric bills?
Calculating how much electricity an LED grow light uses is not that difficult. Please find the following information firstly.
  • The actual wattage of the light
  • The number of hours the light is running per day
Electric Bills=Energy in Kilowatt-hours X Number of Hours used per day X Cost of Electricity (kW/h)
For example: Use a 400W led grow light, 12 hours per day during flower growth.
Because power companies use kilowatts (kW) per hour, we need to convert 400 watts to kw/h. To do this, simply divide the wattage by 1000. That gives us a power draw of 0.400 kw/h.

Now we can calculate the kilowatt-hours by multiplying those two numbers (0.400 kw/h x 12 hours). That gives us a power consumption of 4.800 kilowatt hours.

In order to figure out the cost, you need one more piece of information: your electricity rate. (For example, 12.83 cents per kilowatt-hour ($0.1283/kWh).
That gives us a daily cost of running a 400 watt LED grow light of 4.800 kWh x $0.1283/kWh = $0.616 per day.
Multiply by 30 to get the monthly operating cost is $18.48 per month.

Welcome to share your bills, let's check what's the cost-effective:bigjoint::bigjoint:

View attachment 5086310
Click to expand...
Hell ya. The math checks out, :lol::bigjoint:

I love it. I've got a degree in mathematics and was a tutor in College. This stuff is fun for this nerd, :lol::joint:
 
0potato0

0potato0

Well-Known Member
Star Dog said:
Here is my way of working it out using 400w as a example.
18hrs x 400w = 7,200w so 7.2kw x20p = £1.44p x a week/month.
Click to expand...
the problem is electricity doesn't cost same at different times during the 24 hour cycle and day from day
 
Severed Tongue

Severed Tongue

Well-Known Member
The best way at this point in time for the home grower imho is smart plugs with power usage monitoring.

I use CE smart home ones, they are wifi, programmable, have triggering & montoring and you can get a 4 pack for $20 @ Costco

Then, simply get your cost per kilowatt hour from your electricity provider.

Just my personal experience, you cant just assume your light is pulling the watts its spec'd at max, every LED I've bought never run exactly at the stated wattage out if the box, requiring you spend some time fine tuning the driver and even then.... consumer grade isn't exactly reliable so due to the dimmer it varies again because most consumer grade dimmers are garbage cheap and have tolerance of 10%~15%

Anyways. I run a 150 watt in a 2x3 @ 75% 18/6 uses $5.35 a month.
I run a 300 watt in a 3x3 @ 75% 12/12 uses $7.57 a month.

I'm in Southern Alberta, Canada
 
Spiderfarmerled

Spiderfarmerled

Well-Known Member
Rollitup Advertiser
Severed Tongue said:
The best way at this point in time for the home grower imho is smart plugs with power usage monitoring.

I use CE smart home ones, they are wifi, programmable, have triggering & montoring and you can get a 4 pack for $20 @ Costco

Then, simply get your cost per kilowatt hour from your electricity provider.

Just my personal experience, you cant just assume your light is pulling the watts its spec'd at max, every LED I've bought never run exactly at the stated wattage out if the box, requiring you spend some time fine tuning the driver and even then.... consumer grade isn't exactly reliable so due to the dimmer it varies again because most consumer grade dimmers are garbage cheap and have tolerance of 10%~15%

Anyways. I run a 150 watt in a 2x3 @ 75% 18/6 uses $5.35 a month.
I run a 300 watt in a 3x3 @ 75% 12/12 uses $7.57 a month.

I'm in Southern Alberta, Canada
Click to expand...
Thanks for your share:weed:
 
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