diy solar

diy solar

Blockchain on a bus?

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chrisstratton

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I have a shuttlebus which I am converting to a motorhome here in sunny FLA.. Presently, there is 1,720w of (4x435w) panels on the roof with a Growatt 3000, 3.6kw of diy battery(24v@150ah), and a pioneer 12k heat pump. Is there any sense in putting an Ethereum (or other) mining computer onboard to run during the days and days I'm not using this for camping? If so - any thoughts on which system and dealing with heat? TIA!
 
chrisstratton said:
I have a shuttlebus which I am converting to a motorhome here in sunny FLA.. Presently, there is 1,720w of (4x435w) panels on the roof with a Growatt 3000, 3.6kw of diy battery(24v@150ah), and a pioneer 12k heat pump. Is there any sense in putting an Ethereum (or other) mining computer onboard to run during the days and days I'm not using this for camping? If so - any thoughts on which system and dealing with heat? TIA!
Click to expand...

How much power does a miner use?
 
You would need way more solar than you can fit on that bus, like 6-8x more, and probably 10x that battery capacity. Not worth it.
 
Using Miami and an irradiance resource:

1720W of flat panels will produce 5800Wh/day in Dec. and 10300Wh/day in May assuming the panels get unshaded exposure from sunrise to sunset (no rooftop or external shading).

If your plan is to make the system sustainable, those your your AVERAGE daily limits factoring in weather. If a miner uses 750W, 5800Wh/750W = 7.73 hours. You will likely have several consecutive days where weather doesn't cooperate to allow your average production and you might run out of battery juice periodically.

The battery can only power it for 3840*.8/750 = 4.1hr.

The battery should only be used to compensate for solar variation throughout the day and not considered. You would want to start the miner about 30 minutes after sunrise and then cut-off at the 7 hour mark to allow any remaining solar to top off the batteries.
 
You could do that, you'll probably get 6-8 hours of mining time, but profitability will be very low, and time to pay off equipment will be extended a very long time.

To put it into perspective, as I am GPU Mining im my trailer as well, but I have close to 9kw of solar, my miner draws a smidge over 1500w for 9 GPU's, and my solar only harvested 25kwh yesterday. I had a deficit yesterday of almost 25kwh that I had to pull from the grid.
 
Last edited:
Lt.Dan said:
You could do that, you'll probably get 6-8 hours of mining time, but profitability will be very low, and time to pay off equipment will be extended a very long time.

To put it into perspective, as I am GPU Mining im my trailer as well, but I have close to 9kw of solar, my miner draws a smidge over 1500w for 9 GPU's, and my solar only harvested 25kwh yesterday. I had a deficit yesterday of almost 25kwh that I had to pull from the grid.
Click to expand...
That helps to put some numbers on things. One question of course is how much in ? BTC ? did that $3.00 in electricity cost you (assuming 12cents/kwh)
 
chrisstratton said:
That helps to put some numbers on things. One question of course is how much in ? BTC ? did that $3.00 in electricity cost you (assuming 12cents/kwh)
Click to expand...
I also have other issues - what about cooling? I've shown about 500w above average cooling lately when my a/c has achieved setpoint and the battery stays at 100%. Also - I don't have WIFI in the bus - so there is another cost. Still - solving those types of concerns is of at least academic interest.
 
Just as a heads up, depending on how much you are looking to mine, my four rig system runs 24/7 off PV and battery at home and generates me arounnd $1600 per month and uses a constant 900watts
 
chrisstratton said:
That helps to put some numbers on things. One question of course is how much in ? BTC ? did that $3.00 in electricity cost you (assuming 12cents/kwh)
Click to expand...
I'm mining ETH and RVN, which is netting me about $23/day.
shavermcspud said:
Just as a heads up, depending on how much you are looking to mine, my four rig system runs 24/7 off PV and battery at home and generates me arounnd $1600 per month and uses a constant 900watts
Click to expand...
What are you mining? 900watts is downright impossible for $53/day with GPU/ASIC mining.
 
shavermcspud said:
Just as a heads up, depending on how much you are looking to mine, my four rig system runs 24/7 off PV and battery at home and generates me arounnd $1600 per month and uses a constant 900watts
Click to expand...
Wow. I'm curious to learn about your system. Mining rigs, battery, what not. Thanks for sharing.
 
In 2013 I spent 2.5K on BCs when they were 'free', I had been mining up until then and decided that it was not paying because I was in a crew of 4 with an unequal split. I was a newbie to the crew and FIFO.

So this is now 10 years later and the cap. growth of BC have been in the realm of 10K ROI.

Do a search on the factories in China and Russia that are / were used for mining and you will see you are unlikely to cover your costs. You need to think of it as a hobby. Just a bit of fun.

Just my 2c worth
 
jg.sa said:
Do a search on the factories in China and Russia that are / were used for mining and you will see you are unlikely to cover your costs. You need to think of it as a hobby. Just a bit of fun.

Just my 2c worth
Click to expand...
I'm pretty sure you are 100% correct about ROI.
 
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