how to best estimate power usage

Octastich

Active Member
my veg light is 135w

my flower light is 275w

and i run two fans 20w plus two air pumps 9w they run 24/7

whats my average usage per hour

would you base usage on 24 hours or 16

at total am i running about 468w for 12 hours ??then 193w for the next xxx time ??
 

T macc

Well-Known Member
Wattage x hours on per day x 30 divided by 1,000

Do this per each electronic. This will calculate monthly kilowatts.
 

Octastich

Active Member
my math is crap.
when i do them calculation i get 205.56 total .what looks wrong to me

135 x 16 = 2,160 x 30 = 64,800‬ divided 1,000 = 64.8 kilowatts per month ??
 

T macc

Well-Known Member
So with a 16 hour veg and a 12 hour flower, with the wattage of the lights, that's 163.8 kWh a month

I checked the rest of the math and yea, 205.56 kwh with your current setup
 

Octastich

Active Member
So with a 16 hour veg and a 12 hour flower, with the wattage of the lights, that's 163.8 kWh a month

I checked the rest of the math and yea, 205.56 kwh with your current setup
ok thanks that's easier then i thought would be to work out
about $45.2232 per month for me @ 0.22 cents kwh and i am pulling 4 ish OZ every 4 ish weeks cost per OZ $11.3058‬

the people i live with want to start paying $220 OZ instead of growing. i am trying to explain how retarded that is but couldn't work out the math

thanks for the help
 

Octastich

Active Member
ok thanks that's easier then i thought would be to work out
about $45.2232 per month for me @ 0.22 cents kwh and i am pulling 4 ish OZ every 4 ish weeks cost per OZ $11.3058‬

the people i live with want to start paying $220 OZ instead of growing. i am trying to explain how retarded that is but couldn't work out the math

thanks for the help
nope i got that wrong it should be $45.2232 per month for me @ 0.22 cents kwh and i am pulling 4 ish OZ every 8 ish weeks cost per OZ $22.60. had to correct it for my self so i didn't feel so dumb haha
 

Rider101

Well-Known Member
Ouch 22 cents per kw where do you live? In BC Canada its 11.38 cents per kw hour.

If you live in BC here is a very easy way of calculating the cost. https://www.bchydro.com/powersmart/residential/tools-and-calculators/cost-calculator.html

FYI its cost me 33.25 for 800 watts 12 hour a day for 28 days or 4 weeks for a total of 100 for three months. At 500 grams plus per grow it works out to be 20 cents per gram for power or 5.60 per ounce. Then there is the cost of all the equipment and consumables like fertilizer bulbs and medium. The hid ballasts i bought in 1988 for $600 ya I've been growing three times a year for over thirty years so it works out to $3 for the ballast and $5 for new bulbs per grow. I use rockwoll that costs 10 per grow and finally fertilizer at $30.00 per grow.

All in that $ 100.00 for power $8.00 for the cost of the lights, $10.00 for the grow medium and finally $30.00 for nutes. At $148 per grow and at least 500 grams per grow it works out to 30 cents per gram or $8.40 per ounce.
 

Herb & Suds

Well-Known Member
ok thanks that's easier then i thought would be to work out
about $45.2232 per month for me @ 0.22 cents kwh and i am pulling 4 ish OZ every 4 ish weeks cost per OZ $11.3058‬

the people i live with want to start paying $220 OZ instead of growing. i am trying to explain how retarded that is but couldn't work out the math

thanks for the help
LOL
You seem to be leaving out a few things
Replacement filters, replacement lights ,A/C , nutrients , containers... i could go on
Sorry but you might hit mids but I doubt it
 

Octastich

Active Member
Ouch 22 cents per kw where do you live? In BC Canada its 11.38 cents per kw hour.

If you live in BC here is a very easy way of calculating the cost. https://www.bchydro.com/powersmart/residential/tools-and-calculators/cost-calculator.html

FYI its cost me 33.25 for 800 watts 12 hour a day for 28 days or 4 weeks for a total of 100 for three months. At 500 grams plus per grow it works out to be 20 cents per gram for power or 5.60 per ounce. Then there is the cost of all the equipment and consumables like fertilizer bulbs and medium. The hid ballasts i bought in 1988 for $600 ya I've been growing three times a year for over thirty years so it works out to $3 for the ballast and $5 for new bulbs per grow. I use rockwoll that costs 10 per grow and finally fertilizer at $30.00 per grow.

All in that $ 100.00 for power $8.00 for the cost of the lights, $10.00 for the grow medium and finally $30.00 for nutes. At $148 per grow and at least 500 grams per grow it works out to 30 cents per gram or $8.40 per ounce.
0.22c is cheap for me. im aussie mate come put that shrimp on my barby. thy are cheaper them out electricity
 

Octastich

Active Member
LOL
You seem to be leaving out a few things
Replacement filters, replacement lights ,A/C , nutrients , containers... i could go on
Sorry but you might hit mids but I doubt it
true yes most that is cheap but true does add to cost
filter $200 every two yrs give or take
nutes base grow a+b plus bloom a+b $60 for about the year
don't use A/C and i do dwc so most is reusable just rockwool $5
replacement lights i run led so they will last a long time although need an upgrade

thanks now i have to do more math haha dont go on
 

Rider101

Well-Known Member
true yes most that is cheap but true does add to cost
filter $200 every two yrs give or take
nutes base grow a+b plus bloom a+b $60 for about the year
don't use A/C and i do dwc so most is reusable just rockwool $5
replacement lights i run led so they will last a long time although need an upgrade

thanks now i have to do more math haha dont go on
All in your still at less then 5% to 10% for home grown vs retail.:weed:
 

Octastich

Active Member
All in your still at less then 5% to 10% for home grown vs retail.:weed:
im a scrub and im sure i can out grow any retailer with access to the equipment they get to use. apparently then jobs don't pay well for the work involved so ill stick with being a med grower
 

pulpoinspace

Well-Known Member
some people would rather waste money buying weed than grow.

i try to explain this to people all the time. people who spend $400+ a month on dispensary weed. they tell me they don't have time to grow and then they sit around every night drinking beers watching TV. they're just not interested.
 

Octastich

Active Member
some people would rather waste money buying weed than grow.

i try to explain this to people all the time. people who spend $400+ a month on dispensary weed. they tell me they don't have time to grow and then they sit around every night drinking beers watching TV. they're just not interested.
explaining it to a brick wall is easier . i think its the wait time them people cant handle
 
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