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Tesla Motors Livestream

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Re: Tesla Motors Livestream

#55
post #25

The 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…

For context, how much does a typical household use? Assume a central A/C, 4 tv's, fridge, washing machine, etc.

According to the EPA [1], an average home consumed 12,069kWh in 2012. So assuming a constant load, a 10kWh battery would power about 7.5 hours of usage.

[1]: http://www.epa.gov/greenpower/pubs/calcmeth.htm

Re: Tesla Motors Livestream

#56

Earlier quoted context omitted.

For context, how much does a typical household use? Assume a central A/C, 4 tv's, fridge, washing machine, etc.

According to the EPA [1], an average home consumed 12,069kWh in 2012. So assuming a constant load, a 10kWh battery would power about 7.5 hours of usage. [1]: http://www.epa.gov/greenpower/pubs/calcmeth.htm

So if I'm reading this right - if I bought a Powerwall from Tesla and hooked it up to some solar panels, my power bill would DRASTICALLY decrease?

Re: Tesla Motors Livestream

#57
post #48
post #25

The 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…

You need 20, not 12, don't you? 6V*20 = 120V

edit: the Powerwall runs at 350-450V, 5 amps nominal. Guess it depends on the inverter you use.

Re: Tesla Motors Livestream

#58
post #49

Earlier quoted context omitted.

Does anyone have any experience with the pricing here and could elaborate a bit wether or not this is a good deal? This does seem enticing at first glance, but I am unfamiliar with any hidden costs there might be in going with a solar + backup system such as this.

$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?

Re: Tesla Motors Livestream

#60
post #25

The 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…

> The details are up on the site: http://www.teslamotors.com/presskit/teslaenergy I'm just seeing the normal Tesla homepage. Did they take it down to avoid stealing the thunder from the livestream? EDIT: Back up now

http://www.teslamotors.com/powerwall

or

http://www.teslaenergy.com/

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