How Do You Calculate Energy For Mining? \ stacker news ~bitcoin

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1161 sats \ 5 comments \ @OT 31 Jul bitcoin_Mining

I have a friend who is living completely off grid. They have more than enough energy through solar panels and batteries for their families daily consumption. I want to understand more about what it would take to mine Bitcoin with the excess energy that they aren't using and whether it would be worth pursuing since the electricity is "free".

Take for example the S21 which runs at around 3.5KW.

One thing I'm not sure about is if the 3.5KW this miner uses is per hour or daily? (I'm assuming it's per hour.)

So in this particular off grid set up, would an S21 be pulling consistently around 3.5KW from the solar panels during the day, while at night the batteries would need around 40-60KW of capacity just to keep this miner running?

I know that these miners use a lot of electricity, but this estimate feels like it's too much for just one.

I'm hoping someone here can clear this up for me if I've made a mistake. Thanks in advance!

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50 sats \ 3 replies \ @0xbitcoiner 31 Jul

To figure out how much power you're using (in kilowatt-hours), you just multiply the watts by the hours you use it daily, then by the days you use it a month, and then divide all that by a thousand.

21 sats \ 2 replies \ @OT OP 31 Jul

So this S21 miner running 24/7 would need at least 84KW a day?

18 sats \ 1 reply \ @0xbitcoiner 31 Jul

Assuming the device is always running at full power, yeah, that’s 84kW in 24 hours. So, like 2520kW a month.

0 sats \ 0 replies \ @Filiprogrammer 31 Jul

*kWh

42 sats \ 0 replies \ @4dcfa2e179 31 Jul

You're right according to my observation and research so far. The 3.5kW is per hour, meaning the S21 would use about 84kWh per day if running nonstop. So at night your friend's battery system would need to supply that much power to keep it going. Mining with "free" solar energy can be worth it, but storage and uptime are key factors to consider too.