Tesla Wants to Build a Battery for Your House

[Sunking]

One other place where it could be used is in a low reimbursement situation. Where your paying .$15 cents and being reimbursed $.04 cents. I don't know if it'd pay off, depends on location . You'd also have limited back up and thats worth something.

Geez are you kidding? Where did you go to school and learn math?

Two Jewish tailors are standing in front of their shops named Adam and David. Adam's biz is slow and Davids is booming. Conversation goes like this:

Adam: It cost me $400 to make a suit.

David: Yeah, same here $400

Adam: What do you ell your suits for?

David: $300

Adam: How do you stay in biz and make a profit?

David: Volume makes up for the loss.

[Willy T]

One other place where it could be used is in a low reimbursement situation. Where your paying .$15 cents and being reimbursed $.04 cents. I don't know if it'd pay off, depends on location . You'd also have limited back up and thats worth something.

[Sunking]

The point of the home battery is not to put power out on the grid. It's to save self self-produced solar for later, or as back up.

Exactly. And unless you live where electric rates are high makes no economic sense. Commercial or Utility 10 Mwh package is for Peak Load Shifting. You get it.

[bberry]

Fronius hasn't announced a US version AFAIK. Whoever makes solarcity inverters (solar edge?) will make the U.S. version, I think.

The point of the home battery is not to put power out on the grid. It's to save self self-produced solar for later, or as back up.

I find it strange to question whether Tesla can make the powerwall work as spec'd. The issue is the full cost, and the value proposition.

[Sunking]

Amy

The "grid connection" output voltage on that system is for 3 phase 400/230v and 3 phase 380/220v. Definitely not for use in the US.

And very low power for Poly Phase which defeats the purpose of 3 phase power. 9.6 Kwh usable delivered at 6 Kw. 1.5 hours. What good is that?

Smallest 3-phase power available in the USA 208/120 400 amps than can deliver 218 Kw around the clock or 5.2 Mwh in a day. It could be adapted for USA Single Phase but even 9.6Kwh per day restriction on the the battery is small potatoes. Average household uses 30 Kwh in a day.

[Amy@altE]

Amy

The "grid connection" output voltage on that system is for 3 phase 400/230v and 3 phase 380/220v. Definitely not for use in the US.

No, that's the Euro version, as it is not available for US yet. I think I found it on an Australian forum. Or Austrian.

[Amy@altE]

I'm trying to write up a table comparing cost per cycle of the PowerWall, Aquion, Trojan L16RE-B, and Outback RE200 batteries.

I've got the efficiency for Tesla (92%) and Aquion (85%), does anyone know off the top of their head the L16 or Outback? Or how I'd calculate it? I know SunKing had it somewhere for some Trojans, I can't find it. There are currently so many threads going on regarding the PowerWall, I've lost track of where anything is.

http://www.trojanbattery.com/pdf/datasheets/L16REB_TrojanRE_Data_Sheets.pdf

http://www.outbackpower.com/downloads/documents/energycell_re/energycellre_specsheet.pdf

[SunEagle]

http://www.fronius.com/cps/rde/xbcr/...1_snapshot.pdf

Amy

The "grid connection" output voltage on that system is for 3 phase 400/230v and 3 phase 380/220v. Definitely not for use in the US.

[Willy T]

You can buy Bongs too, but that does not mean they are legal to use for the intended purpose.

Thats your opinion and it depends what state your in.

[Sunking]

Thats funny since the Fronius Hybrid Inverter is already being sold with their own battery that does exactly that and was never said in the video. In fact any hybrid Inverter will sell or can use Grid support.

You can buy Bongs too, but that does not mean they are legal to use for the intended purpose.

[Amy@altE]

Thats funny since the Fronius Hybrid Inverter is already being sold with their own battery that does exactly that and was never said in the video. In fact any hybrid Inverter will sell or can use Grid support.

http://www.fronius.com/cps/rde/xbcr/SID-3DAF0C16-CD8F5048/fronius_international/SE_DS_Fronius_Energy_package_EN_386411_snapshot.pdf

[Willy T]

Your claims in the previous post. That should be a bit obvious.

Division manager Martin Hackl at Fronius said

The inverter that will be used is the Fronius Symo Hybrid, which also supports the Fronius Solar Battery already on the market.

This is Opinion and was never said.

He also states or admits Tesla 7 Kwh system will not be available because there is no way to integrate it into a Grid Tied System because state and federal regulations will not allow it to be used as intended for Peak Load shifting. Utilities and regulations will not allow a person to buy and store cheap Off-Peak power from the utility, then turn around and sell it at higher price Peak Hours for a profit.

Opinion

What it all boils down to is hype on Musk part to get a False bump in stock price which has worked as of now. Great if you have Tesla stock and looking to sell a few shares.

The Model S uses a 85 KW battery.

Same battery used in the S model with different controls to limit discharge and DOD rates to extend cycle life.

Was never said

Higher voltage has a lot of merits. But as you pointed out is not used in off grid applications. To make it work requires a DC-to-DC converter or another expensive egg in the basket until someone makes an Inverter to work with it which will be expensive.

Any grid tied Hybrid has a bi directional input and will sell based on battery voltage, it doesn't care what time of day it is. you set the high and low voltage and let it sell.

Any grid tied Hybrid can have the ACin set low and the support amps set to support the loads. You set the ACin to 5 amps and the support to 4 amps and the inverter & battery up to it's capacity.

[russ]

Explain what ??

Your claims in the previous post. That should be a bit obvious.

[Willy T]

Explain please.

Explain what ??

[russ]

Once again only about 10% of whats been posted was actually said in the Video.

Thats funny since the Fronius Hybrid Inverter is already being sold with their own battery that does exactly that and was never said in the video. In fact any hybrid Inverter will sell or can use Grid support.

Explain please.