Tesla launches Powerwall 3 in UK & Germany

Almost ten years after the “Powerwall 1,” US EV giant Tesla has launched its home battery system, Powerwall 3, in the United Kingdom and Germany. The Powerwall 3 is being officially presented at The smarter E Europe this week.
Tesla Powerwall 3
Tesla Powerwall 3 can be installed indoors or outdoors | Image: Tesla

Tesla says its new home battery, the Powerwall 3, has twice the power of the previous model with a battery capacity of 13.5 kilowatt hours and a maximum charging and discharging capacity of 4.6 kilowatts. The size of the overall installation is variable according to customer needs: Up to four Powerwall 3 batteries can be scaled for one application. The product can be managed via the Tesla App and adapted to different needs. It weighs 130 kg and measures 1099 x 609 x 193 mm.

Emergency power protection and integrated inverter

The US company is highlighting the advantage of “emergency power protection” offered by its new Powerwall generation. This feature means the Powerwall can automatically detect failures and become the house’s energy source when the mains power fails. In the event of a power failure in Europe, the inverter can deliver between 3.68 and 11.04 kilowatts.

The company points out that the integrated photovoltaic inverter also means customers do not have to purchase a third-party inverter. DC coupling ensures greater energy efficiency and easier installation, as fewer components must be installed.

New thermal management system

The thermal management system of the photovoltaic home storage system has also been redesigned based on the technology of the Tesla Model 3 electric car. This means installation is possible indoors and outdoors and can be operated at temperatures between -20 and 50 degrees Celsius. In addition, the robust design can withstand extreme weather conditions, so normal operation is guaranteed even in high humidity and flooding up to 60 centimeters of water.

When used with Tesla vehicles, the new version of the Powerwall can offer charging features such as Charge on Solar, which gives Tesla owners equipped with a Powerwall paired with solar the ability to charge using only excess energy produced by the Tesla solar system

Solar-to-home efficiency: 97.5%

The company says the Powerwall’s solar-to-home efficiency is 97.5%, and its solar-to-battery-to-home efficiency is 89%. Its maximum continuous discharge is up to 11.04 kW, and its maximum continuous charge is up to 5 kW.

While Tesla envisages the power for its cars coming from renewable energy added to grids by means of solar installations and Powerwalls, the company sold 1.81 million electric cars in 2023 alone, but has only sold 600,000 Powerwalls cumulatively since the product was first released 10 years ago.

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