Electronics > Power/Renewable Energy/EV's

Solar Upgrade AGAIN

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tszaboo:
OK, so back of the napkin calculation for Tesla powerwall:
System costs 10K, Dave said it's OK for 10 years.
10 years *365 days * 10 kwh = 36500 kWh usable capacity. At 0.30AUD/kWh the system barely pays for itself (10950 AUD), by cycling it 100% DoD, every single day.
If you would include the feedback rate, probably it would be 15 years or more to pay for itself?

tszaboo:
OK, so back of the napkin calculation for Tesla powerwall:
System costs 10K, Dave said it's OK for 10 years.
10 years *365 days * 10 kwh = 36500 kWh usable capacity. At 0.30AUD/kWh the system barely pays for itself (10950 AUD), by cycling it 100% DoD, every single day.
If you would include the feedback rate, probably it would be 15 years or more to pay for itself?

EEVblog:

--- Quote from: tszaboo on September 24, 2022, 11:19:45 am ---OK, so back of the napkin calculation for Tesla powerwall:
System costs 10K, Dave said it's OK for 10 years.
10 years *365 days * 10 kwh = 36500 kWh usable capacity. At 0.30AUD/kWh the system barely pays for itself (10950 AUD), by cycling it 100% DoD, every single day.
If you would include the feedback rate, probably it would be 15 years or more to pay for itself?

--- End quote ---

You'd be a fool to buy a Tesla Powerwall IMO.
It's one of hte most expensive, the least servicable, probably the last reliable (mechanical water cooling system), and it's not LiFePO.

gf:

--- Quote from: tszaboo on September 24, 2022, 11:22:11 am ---10 years *365 days * 10 kwh = 36500 kWh usable capacity.

--- End quote ---

When comparing battery systems, their useful life should be rather derived from the number of expected charging cycles, which may vary significantly between battery models.

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