What backing up your home with Tesla’s battery might be like - home battery system

The story has been updated.
Late Thursday, tes launched a new battery product kit for apps of home, enterprise and even utility size.
Home products called Tesla Powerwall will store 10 KW-
Number of hours of energy (for $ 3,500)or 7 kilowatt-hours (for $3,000).
However, it is important that these costs do not include the cost of installing the battery or the cost of the power inverter, which means that the actual cost paid by the customer may be much higher.
The company said it would start delivering batteries at the end of the summer.
For those who keep a close eye on the development of energy storage, here are two key details to consider --
The cost of the battery itself, and what it actually means to own 10 KW
You have several hours of spare energy or energy storage in your home. [
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When it comes to prices, these numbers are not cheap, but they are also below the advice of some analysts --
Before Tesla's announcement, the $13,000 figure was common in news reports.
Ravi Manghani, an analyst at GTM Research, said in a statement: "The price points of the two Powerwall options in the residential and small business sectors will definitely bring a slight shock to the industry.
The price is "slightly lower than the world's expectations for an expensive electric car manufacturer.
The announcement is expected to lead to the same aggressive price offered by other storage technology and system vendors.
This figure is far below the price that we and other research institutions have been studying.
Very exciting, "added Jesse Morris, transport and power project manager, Rocky Mountain Institute, a well-known energy think tank.
Aside from the price, what the homeowner really cares about is how much backup power the product actually offers them
Or how much solar energy does it add-
They can use energy to power their homes.
Some simple numbers here can provide some context.
According to the United StatesS.
Annual average kilowatt-Energy Information Administration
One-hour use in the United StatesS.
Utility customers (
2013 this year)
10,908 or 909 KW-Working hours per month
Divided by 30 and daily, the average AmericanS.
Customers use about 30 KW-hours.
So the battery can probably cover the third of them.
However, this analysis is too simplistic, because in fact some key household appliances consume a lot of energy.
For example, it takes about £ 4 to run the laundry room on "hot water cleaning, warm water Flushing. 5 kilowatt-hours.
Other devices, such as laptops or televisions, take up a lot less resources.
So this means that although 10 KW-
The hour may not be enough to power your entire home and all its utilities, and as a backup, it lasts for a while when you don't run something more energy consuming.
"If you want to leave the grid with this, it will be a bit of a challenge," said Peter liantar, CEO of Homer Energy
Recently, a report on the future of home solar cell systems was written at the Rocky Mountain Institute.
"It's really not designed to cut off the wires . . . . . . But if you're just worried about a power outage --
I didn't bake in the electric oven during the power outage-
10 KW hours is enough for your lights, your electronics and an efficient refrigerator.
"Of course, it's unlikely that people who buy these $3,000 + batteries will be ordinary --
They may have bigger houses and use more energy.
The other thing is to pair these batteries with solar panels.
AsTesla pointed out that the key problem with home solar power now is that the most used power in the home usually occurs in the morning, especially in the evening.
Before work, after work.
This happens to be out of sync with the sun itself providing the most readily available energy (
In the middle of the day).
Therefore, one idea of pairing household batteries with solar panels is to store solar energy used during the day and then deploy it at night, at night and the next morning.
While the battery may not be able to cover all energy use during this time, it may reduce the demand for electricity purchased from traditional utilities and extracted from the grid.
But the battery won't be used like this in the first place, Peter Rive said.
The founder of the Solar City, when customers install solar panels, they provide batteries at an additional cost.
At first, the battery will be used as a backup when power is off, Drive said.
But the bigger ambitions may eventually include helping customers use solar energy.
Even if the sun no longer shines, there is electricity in their homes.
"We hope to deploy the batteries to all of our solar systems by the end of ten years," said Ryf . ".
There are still a lot of battery skeptics-
In particular, Tesla is also promoting utility-scale applications, announcing cooperation with Texas utility company Oncor and Southern California Edison.
"The people I talked to, it's really technically, they think it's hard to make lithium ion cheap enough at the power grid scale to get a broad sense, "says Richard schmalensey, professor and former dean of the Sloan School of Management at MIT.
ChairedMIT's 2011 "future of the grid" study.
On the other hand, Oncor-
Major distributor of Texas electric power
It has said it wants to invest billions of dollars in energy storage.
So there are a lot of details to be addressed about the future of energy storage, especially as the market continues to grow.
But today, Tesla seems to be very exciting.
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