Living in the north that -4 degree F lower operating temp limit makes me sad. Sure you could put it in a heated garage - but I bet this explains why no one up here owns a Tesla vehicle yet.
Tesla Motors Livestream
71–80 of 90 posts
Re: Tesla Motors Livestream
#72Earlier quoted context omitted.
$3,000 for 7kwh and $3,500 for 10, both sound unbelievable to me. My first thought is there's a missing zero on the end. Recently had a quote in Australia for >$AUD12,000 for a 5kwh battery set. This is going to change everything to do with solar installations I think. Currently battery packs are a rarely taken up optional component.
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?
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.
Re: Tesla Motors Livestream
#73Flash player for a live stream, in 2015?
Unfortunately there's still no stable/scalable way to deliver a livestream using HTML5 in chrome. Video on demand yes - live video no. We do it in Safari via HLS. Max (Livestream CEO).
Re: Tesla Motors Livestream
#74The details are up on the site: http://www.teslamotors.com/presskit/teslaenergy The Powerwall is available in 10kWh, optimized for backup applications or 7kWh optimized for daily use applications. Both can be connected with solar or grid and both can provide backup power. The 10kWh Powerwall is optimized to provide backup when the grid goes down, providing power for your home when you need it most. When paired with s…
Meanwhile, in lead acid battery land, a Trojan T-105 is ~$150 for a 6 volt, 225 amp hour battery, which you might comfortably cycle 0.9kWh each day for 5+ years. Use 12 of them to match the 10kWh Powerwall and it only costs $1800, replace them at the end of 5 years and you have about the same cost as the 10 year Powerwall. Powerwall is several times smaller and lighter and presumably doesn't give off hydrogen gas whe…
I guess the question is how long the powerwall is expected to last, and how novel the linking of them is (I have no idea). Additionally, we can hope that once the gigafactory is up and running, or version 2 of it is, that prices drop.
Really, I think the big advancement here is attractive packaging of the product and experience, a la Apple.
Re: Tesla Motors Livestream
#75Earlier quoted context omitted.
$3,000 for 7kwh and $3,500 for 10, both sound unbelievable to me. My first thought is there's a missing zero on the end. Recently had a quote in Australia for >$AUD12,000 for a 5kwh battery set. This is going to change everything to do with solar installations I think. Currently battery packs are a rarely taken up optional component.
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?
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.
Re: Tesla Motors Livestream
#76Is there going to be a download available of the livestream? I'd love to have watched it, but it kept cutting out after about 15 seconds for me even on the lowest quality.
Re: Tesla Motors Livestream
#77"Powerwall comes in 10 kWh weekly cycle and 7 kWh daily cycle models."
Can somebody explain what "weekly cycle" vs. "daily cycle" means in this context?
Re: Tesla Motors Livestream
#78Earlier quoted context omitted.
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?
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.
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.
Re: Tesla Motors Livestream
#79Earlier quoted context omitted.
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.
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 savi…
> 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.
Re: Tesla Motors Livestream
#80Earlier quoted context omitted.
I'm curious if they'll be indemnifying homeowners for fires originating in the battery pack. Anyway, if it can clearly save me money and is not incredibly expensive up-front, I'll likely get one. Even if you actively conserve, electricity is decently expensive over the long run.
Presumably they're using a stable form of lithium ion battery, does anyone know? Maybe something similar to A123 Systems' lithium iron phosphate?
If only Tesla had experience with batteries... wait! They ship cars! Electric cars! With a lot more battery history than A123! Woah.