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1st May 2015

Revolutionary new energy storage system announced by Tesla

Tesla has revealed a new battery technology for homes and businesses, which provides a way to store energy from localised renewables and can function as a backup system during power outages.

 

powerwall 2015 battery technology

 

A major barrier to the widespread adoption of clean energy has been the intermittent nature of wind and solar. The Sun doesn't always shine, and the wind doesn't always blow – making it difficult or impossible to harness these resources on a 24-hour basis.

Elon Musk, CEO of electric vehicle firm Tesla Motors, yesterday unveiled a revolutionary new technology that can solve these issues. The Powerwall, pictured above, is a rechargeable lithium-ion battery product, intended primarily for home use. It stores electricity generated from rooftop solar panels, which can then be used for domestic consumption, load shifting, or backup power.

With a constant supply of renewable energy at a local scale, the Powerwall offers complete independence from the utility grid, meaning that customers no longer have to worry about expensive bills incurred during peak hours. If a utility company experiences a major outage, the Powerwall can serve as the home power supply instead, which is especially useful in areas prone to storms or unreliable grids. It also recharges electric vehicles more cheaply during night hours while surplus power can be flowed back to the grid when needed.

 

powerwall 2015 battery technology

 

Tesla claims the Powerwall is fully automated, simple to install, and requires no maintenance. It is being marketed in two models: 10 kWh weekly cycle ($3,500) and 7 kWh daily cycle ($3,000) versions. Multiple batteries can be installed together for homes with greater energy needs; up to 90 kWh total for the 10 kWh battery and 63 kWh total for the 7 kWh battery. Both are rated for indoor and outdoor installation, and guaranteed for ten years.

The Powerwall begins shipping this summer. It will be sold to companies including SolarCity, which is running a pilot project in 500 California houses, using 10-kWh battery packs. Tesla is bullish about the prospects for batteries, electric vehicles and clean energy. The company is building a "gigafactory" to develop and expand these technologies at a large scale, with more factories to come in the future.

While the current price of the Powerwall may seem a little on the high side, analysts forecast a substantial decline in battery costs over the next decade and beyond, with a similar fall in solar panel costs. When combined with smart grids, the proliferation of this technology seems inevitable. As predicted on our future timeline, it is likely that home energy storage systems will be commonplace by 2030.

A much larger version of the Powerpack – described as an "infinitely scalable system" – will be made available for businesses and industrial applications. This will come in 100 kWh battery blocks, which can scale from 500 kWH, up to 1 GWh and even higher: "Our goal here is to change the way the world uses energy at an extreme scale," says Musk. You can watch his full keynote presentation (which was powered by solar energy) in the video below.

 

 

 

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