scaling the powerwall - home battery system

What is the full content of Powerwall?
In the company's own words, "Powerwall is a home battery that uses the power generated by solar panels to charge, or to charge at a lower utility rate and at night
"This is a residential storage system with lithium. ion battery.
So, technically, users can get out of the grid.
Powerwall comes in two sizes-the back version at 10 KW --up power (costing $3,500)
And version 7 KW (for $3,000).
Inverter cost and installation fee are not included.
It was launched in the US market.
Even there, anyone who wants to buy a system may have to wait until the middle of next year.
Because Tesla has 38,000 pre-
Booking for Powerwall can be difficult to meet this order.
What is lithium-ion battery? Lithium-
Ion batteries are usually used to power phones and laptops.
They are more powerful and lasting than conventional batteries.
They have also been in the news for cases of overheating.
What could be USP for Powerwall?
According to Logan Goldie
Scot, an analyst at Bloomberg New Energy Finance, believes the product is much cheaper than alternative products in the current market.
He said the average price of other lithium-ion products is about twice that of Powerwall.
Its cost structure can be based on relatively low profit margins and scale expectations.
Can this cost be maintained?
In fact, Bloomberg New Energy Finance pointed out that the cost of energy storage in the whole market continued to decline.
The company said Powerwall further demonstrated this and expects the cost to continue to decline in the coming years.
Mr. price point given
Musk of Tesla battery
From $500 to $700 per kilowatt hour-
Less than half of residential power storage in Japan, Australia and Germany.
Can Powerwall work in India?
Tobias englemel, founder and director of the consulting firm Bridge to India, did some math to help us solve this problem.
He said the price of traditional lead
The acid battery in India is about Rs 5,000 per kWh.
According to rough calculations, Powerwall will reach Rs 22,000 per kWh.
However, this is not an appleto-
Apple contrast. Why so?
Because the life of the Powerwall battery is at least twice that of the lead batteryacid battery (10-
In other words, 12 years to 5 years).
In addition, it has lower maintenance, lower weight, lower area requirements, lower self
Discharge and faster charging and discharging capabilities.
Nevertheless, from an economic point of view, on the basis of the cost of the life cycle, the cost of the traditional battery may be lower than that of Powerwall.
Economist Ajay Shah said in his blog
There are 2 ion batteries.
Store 3 times per unit volume, 3.
Compared to lead, the storage capacity per unit mass is 1 times that of lead
Acid batteries are used for inverters in India today.
In short, lithium-
Better ion batteries.
Logan Goldie from Bloomberg
Scot thinks it can be used for the back.
Although if the power grid breaks more frequently and lasts longer, India's electricity will increase
Up generators may make more sense.
However, Joseph Mariathasan, partner of Pangu Financial Partners, believes that Tesla's price of producing only 2,000 watts will not make it strong enough, even for several devices.
He believes that this will be an unattractive proposal for the mass market.
Even in the United States, Powerwall is skeptical in many ways.
In an article in Forbes, there is a title that says "Tesla's Powerwall is just another toy in the rich green "!
What is the tipping point?
A key indicator is how customers adopt this product.
In addition, the cost may fall when Tesla starts mass production.
Mariathasan said that the importance of Powerwall may not be what it can do, but its inspiring vision for the future.
"Even if it takes ten years to have a huge capacity --scale, low-
The cost of charging a battery may be much more important than a luxury sports car. ”Sanjay. v@thehindu. co.