Electrical Cost

WhatCouldGoWrong71 · Jul 18, 2024

Just making sure I understand this correctly. I recently purchased a couple 280ah LiFePo4 and an auto transfer inverter. I want to start to understand the cost per device for all devices as I assign what components will be critical in a power failure prior to me manually starting up a generator. With this new battery setup, I’ll have plenty of time to determine if I need to fire the old girl up. In doing so, I’d like to see my cost per device on my new build. For example - my cost per kWH is .087. One of my new closed loop pumps runs at 440 watts per hour. So 24 hours x 440 watts = 10,560. So if 1kwh = .087 then 10.58 x .087 = $0.92 a day?

gbroadbridge · Jul 18, 2024

WhatCouldGoWrong71 said:
Just making sure I understand this correctly. I recently purchased a couple 280ah LiFePo4 and an auto transfer inverter. I want to start to understand the cost per device for all devices as I assign what components will be critical in a power failure prior to me manually starting up a generator. With this new battery setup, I’ll have plenty of time to determine if I need to fire the old girl up. In doing so, I’d like to see my cost per device on my new build. For example - my cost per kWH is .087. One of my new closed loop pumps runs at 440 watts per hour. So 24 hours x 440 watts = 10,560. So if 1kwh = .087 then 10.58 x .087 = $0.92 a day?

The terminology is not quite right, but the answer you provided is correct