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Alternative Energies
See other Alternative Energies Articles

Title: Tesla wants to power your home with a battery
Source: CNN via Slashdot
URL Source: http://money.cnn.com/2015/04/22/technology/tesla-home-battery/
Published: Apr 25, 2015
Author: David Goldman
Post Date: 2015-04-25 09:03:01 by Tooconservative
Keywords: None
Views: 10604
Comments: 46

Tesla will introduce a battery for your home during its highly anticipated April 30 event.

In a letter sent to investors and analysts on Tuesday, the electric car company said it will announce a "home battery" and a "very large utility scale battery." Similar products already exist on the market, but Tesla said it will explain why its batteries are better than competitors' solutions at the event. CEO Elon Musk thinks rivals' batteries "suck," according to the note from Jeff Evanson, Tesla's investor relations director.

Tesla (TSLA) shares rose more than 5% Wednesday on the news.

Home batteries power up overnight, when energy companies typically charge less for electricity. Then, they can be turned on during the day to power a home. Though home batteries cost thousands of dollars, many utility companies will offer rebates.

Musk announced the event late last month on Twitter, only hinting then that the new product is not a new electric car. The event will be held at Tesla's Hawthorne, California, Design Studio on April 30 at 8 p.m. PT.

Tesla has talked about releasing a home battery storage product for about a year, and Musk announced on a conference call with analysts in February that Tesla would unveil a home battery "fairly soon."

At a battery conference last year, Tesla's Stationary Energy Storage Director Arch Padmanabhan showed off some of the company's early plans, including a 10 kilo-Watt hour residential battery and a 400 kWh commercial/utility battery for large buildings.
tesla home battery

In a pilot project, Tesla has already begun offering home batteries to SolarCity (SCTY) customers, a solar power company for which Musk serves as chairman.

There are 330 U.S. households currently running on Tesla's batteries, the majority of which are in California, according to company analyst Trip Chowdhry.
tesla battery

Those batteries start at about $13,000, though California's Pacific Gas and Electric Co. (PCG) offers customers a 50% rebate. Tesla's batteries are three-feet high by 2.5-feet wide, and they need to be installed at least a foot and a half off the ground. They can be controlled with a Web app and a smartphone app.

It's unclear if the batteries that Tesla plans on announcing next week are the same as the ones in the pilot program or in the presentation made at the battery conference last year.


Poster Comment:

As seen at Slashdot: Tesla To Announce Battery-Based Energy Storage For Homes
Okian Warrior writes:
Billionaire Elon Musk will announce next week that Tesla will begin offering battery-based energy storage for residential and commercial customers. The batteries power up overnight when energy companies typically charge less for electricity, then are used during the day to power a home. In a pilot project, Tesla has already begun offering home batteries to SolarCity (SCTY) customers, a solar power company for which Musk serves as chairman. Currently 330 U.S. households are running on Tesla's batteries in California. The batteries start at about $13,000, though California's Pacific Gas and Electric Co. (PCG) offers customers a 50% rebate. The batteries are three-feet high by 2.5-feet wide, and need to be installed at least a foot and a half off the ground. They can be controlled with a Web app and a smartphone app.
(2 images)

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Begin Trace Mode for Comment # 21.

#4. To: TooConservative (#0)

Batteries leak charge, no matter the technology. They are notorious for break down if overcharged or not charged at all. They have limited longevity and are subject to limited temperature ranges.

I am not impressed with Tesla's solution for home use at all.

buckeroo  posted on  2015-04-25   10:39:11 ET  Reply   Untrace   Trace   Private Reply  


#17. To: buckeroo, TooConservative (#4)

Batteries leak charge, no matter the technology. They are notorious for break down if overcharged or not charged at all. They have limited longevity and are subject to limited temperature ranges.

No if the are adequately and consistently maintained - which most home owners will not likely do.

SOSO  posted on  2015-04-25   13:28:07 ET  Reply   Untrace   Trace   Private Reply  


#19. To: SOSO (#17)

No if the are adequately and consistently maintained - which most home owners will not likely do.

Maintenance is only one aspect to the issue and it is a small issue. The larger characteristics that increase longevity about battery life is charge rate, temperature and humidity; essentially, like all products, reliability and performance is designed into a product, it is not about maintenance as a well designed product minimizes or eliminates maintenance considerations altogether. The again, the cost is going to skyrocket.

Nope, the technology by Tesla is a mere toy for a privileged class of potential buyers.

buckeroo  posted on  2015-04-25   13:42:01 ET  Reply   Untrace   Trace   Private Reply  


#21. To: buckeroo (#19)

Maintenance is only one aspect to the issue and it is a small issue. The larger characteristics that increase longevity about battery life is charge rate, temperature and humidity; essentially,

This is all part of the maintenance of both equipment and installation environment.

"like all products, reliability and performance is designed into a product, it is not about maintenance as a well designed product minimizes or eliminates maintenance considerations altogether."

Agreed. I am not commenting on this aspect of Telsa's product as I have no idea how well designed, engineered and manufactured the product may be. In general though, there are very well designed products that require high maintenance to keep up their performance level. Given my drothers I would much prefer a well engineered product that requires a minimal amount of maintenance for consistent performance and longevity. The state of the art with heavy duty batteries, even in commercial applications, isn't quite there yet.

SOSO  posted on  2015-04-25   13:55:01 ET  Reply   Untrace   Trace   Private Reply  


Replies to Comment # 21.

#24. To: SOSO (#21)

This is all part of the maintenance of both equipment and installation environment.

From the article: .. and they need to be installed at least a foot and a half off the ground. There are electrical leakage reasons for this constraint. This same constraint infers all all six planes of the battery enclosure.

There shall be a min-max temperature and rel humidity range, too. In some homes such as California (where most current installations are located) this Tesla technology is useless. It can not be guaranteed.

buckeroo  posted on  2015-04-25 14:08:12 ET  Reply   Untrace   Trace   Private Reply  


End Trace Mode for Comment # 21.

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