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Somebody just stated that technically this would feed the average home consumption of energy for about 8 hours. Why is this a good deal, even if it were 24 hou

Somebody just stated that technically this would feed the average home consumption of energy for about 8 hours. Why is this a good deal, even if it were 24 hours?

phamilton 12y ago
Would the benefits of solar power being extended into the evening be worth it? Back of the envelope calculations: If you can run on solar all night there's potential savings. Assume 10kWh costs $1. If you have a surplus of solar during the day and you fully deplete at night, you theoretically save $365/year. Break even is at 10 years, which coincides with the warranty.
- cbo100 12y ago
  Well for me, I'm paying just over 22c/kwh, last period we used 808kwh over 80 days, so almost bang on 10 per day. So with a solar setup that could charge a 10kw pack each day I could almost go off grid. That would save me nearly $1000/year once you take into account daily connection charges. So the batteries would be paid off in 3-4 years, add a few years for however many panels I need and that's a pretty decent saving for no more power bills. Of course it depends how long they are likely to last after that 10 year warranty period - no point swapping utility bills for tesla bills for replacements every 10 years.
  - kbenson 12y ago
    > no point swapping utility bills for tesla bills for replacements every 10 years Well, there could be additional benefits, such as not being linked to the grid and it's occasional problems (not to mention you aren't drawing power provided in part by coal). Then again, an extended period of low solar energy could have it's own problems.
edvinbesic 12y ago
I don't know about your consumption but ours is definitely 'bursty'. If we could have a battery with some surplus to offset some of our breakfast/lunch/dinner + laundry routine it would pretty much eliminate most of our energy bill. However, I might be completely wrong about how this works.

Somebody just stated that technically this would feed the average home consumption of energy for about 8 hours. Why is this a good deal, even if it were 24 hours?

phamilton 12y ago

Would the benefits of solar power being extended into the evening be worth it? Back of the envelope calculations: If you can run on solar all night there's potential savings. Assume 10kWh costs $1. If you have a surplus of solar during the day and you fully deplete at night, you theoretically save $365/year. Break even is at 10 years, which coincides with the warranty.

cbo100 12y ago
Well for me, I'm paying just over 22c/kwh, last period we used 808kwh over 80 days, so almost bang on 10 per day. So with a solar setup that could charge a 10kw pack each day I could almost go off grid. That would save me nearly $1000/year once you take into account daily connection charges. So the batteries would be paid off in 3-4 years, add a few years for however many panels I need and that's a pretty decent saving for no more power bills. Of course it depends how long they are likely to last after that 10 year warranty period - no point swapping utility bills for tesla bills for replacements every 10 years.
- kbenson 12y ago
  > no point swapping utility bills for tesla bills for replacements every 10 years Well, there could be additional benefits, such as not being linked to the grid and it's occasional problems (not to mention you aren't drawing power provided in part by coal). Then again, an extended period of low solar energy could have it's own problems.

edvinbesic 12y ago

I don't know about your consumption but ours is definitely 'bursty'. If we could have a battery with some surplus to offset some of our breakfast/lunch/dinner + laundry routine it would pretty much eliminate most of our energy bill. However, I might be completely wrong about how this works.