3 ms·
Tesla's powerwall claims 90% round-trip efficiency (AC in vs. AC out) and most SMPS power supplies are also 90%+efficient as well so you are losing <20% capacit
by fr0sty 9y ago
Tesla's powerwall claims 90% round-trip efficiency (AC in vs. AC out) and most SMPS power supplies are also 90%+efficient as well so you are losing <20% capacity (not 100-200%).
- saalweachter 9y agoNumerically, I'm worried about ~50% power loss. If you are converting your solar from DC to AC there's another loss. There still might not be enough power loss to matter, but even with 70-80% efficiency you're still talking an extra 25-50% batteries over the ideal.
- PaulHoule 9y ago90% is going to be in ideal conditions; probably not quite at full load, but not much below. If you are using it to power a very light load, the efficiency will be much worse, as it takes a minimum amount of energy to run the inverter.