How Much Will It Cost To Run My Lights?

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Here is an explanation to help you figure out your own cost of running your equipment. This assumes $0.12 per KW hour price. (If you pay a different amount change it in the formula below.)

Explanation = Watts used by device (a 400 watts HPS) X hours used over the course of a month = total watt hours.
Example = 400 watts x 24 hours/day x 30.5 days/month = 292,800 Total Watt-hours.

Explanation = now you have to convert Wh (watt hours) to kWh (kilowatt hours) Wh / 1000 = kWh.
Example = 292,800 Wh / 1000 Wh = 293 kWh.

Explanation = now take you kWH and multiply it by the price you pay your electric provider.
Example = 293 kWh x 12¢(insert the price you pay here)/kWh = $35.16/mo.; $422/yr.

When you buy electricity they charge you by the kilowatt-hour (kWh). When you use 1000 watts for 1 hour, that’s a kilowatt-hour.

Author: The General

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