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Tesla Powerwall home battery installations to begin in Japan

(Credit: Tesla)

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Tesla’s Powerwall, a device that stores energy from that is generated from the sun and captured by solar panels, will be available for Japanese homeowners in Spring 2020, according to recent reports.

The Tesla Powerwall is a 13.5 kWh rechargeable battery pack that is capable of supplying a residential building with multiple hours of clean, non-pollution causing energy. The Powerwall was unveiled by the Silicon Valley-based company in 2015, and is slated to cost around 990,000 Yen (about $9,000).

The price includes the installation of the Backup Gateway system that manages the grid connection. Tesla CEO Elon Musk announced in October that he would be decreasing the price of solar panel and Powerwall installations by around 10% in response to a California power company’s mandatory electric shutoff.

Japanese buyers will be able to purchase the Powerwall system through Tesla’s official website or through a limited number of third-party sellers. Although Tesla has been accepting orders for the Powerwall in Japan since 2016, there were delays on when installations would start due to feed-in-tariffs that were put into place to spike the initial costs of solar energy. These are set to expire later in 2019.

Tesla recognizes that Japan has a thirst for clean energy that could help improve the company’s presence in the country. Shinji Asakura, the Japanese manager of energy products said in an interview in Tokyo that “Tesla believes that the Japanese home battery market has big growth potential,” according to Reuters.

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Japan has a lack of fossil fuels naturally and is forced to import many of its energy sources, those mainly being crude oil, natural gas, and uranium. The country utilized nuclear energy for 30% of its needs until 2011 when a power plant in Fukushima created the biggest nuclear disaster since Chernobyl.

Asakura believes that the addition of the Powerwall batteries to residential buildings will allow residents to supply their homes with power in a more energy-efficient fashion. He anticipates that residents will be using the Tesla battery pack as a backup for when natural disasters knock out power to homes. But hopefully, the up-and-coming installations will convince Japanese citizens to switch to solar power altogether.

Tesla’s global initiative to wean the world off of fossil fuels is becoming a reality. They have once again expanded the region of where Powerwalls will be available. Since 2015, Telsa has installed a Powerwall system at over 50,000 locations in seven different countries, according to a company spokesperson.

Joey has been a journalist covering electric mobility at TESLARATI since August 2019. In his spare time, Joey is playing golf, watching MMA, or cheering on any of his favorite sports teams, including the Baltimore Ravens and Orioles, Miami Heat, Washington Capitals, and Penn State Nittany Lions. You can get in touch with joey at joey@teslarati.com. He is also on X @KlenderJoey. If you're looking for great Tesla accessories, check out shop.teslarati.com

Energy

Tesla launches first Virtual Power Plant in UK – get paid to use solar

Tesla has launched its first-ever Virtual Power Plant program in the United Kingdom.

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Credit: Tesla Energy | X

Tesla has launched its first-ever Virtual Power Plant program in the United Kingdom. This feature enables users of solar panels and energy storage systems to sell their excess energy back to the grid.

Tesla is utilizing Octopus Energy, a British renewable energy company that operates in multiple markets, including the UK, France, Germany, Italy, Spain, Australia, Japan, New Zealand, and the United States, as the provider for the VPP launch in the region.

The company states that those who enroll in the program can earn up to £300 per month.

Tesla has operated several VPP programs worldwide, most notably in California, Texas, Connecticut, and the U.S. territory of Puerto Rico. This is not the first time Tesla has operated a VPP outside the United States, as there are programs in Australia, Japan, and New Zealand.

This is its first in the UK:

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Tesla is not the only company that is working with Octopus Energy in the UK for the VPP, as it joins SolarEdge, GivEnergy, and Enphase as other companies that utilize the Octopus platform for their project operations.

It has been six years since Tesla launched its first VPP, as it started its first in Australia back in 2019. In 2024, Tesla paid out over $10 million to those participating in the program.

Tesla VPP program in California hits new capacity milestone

Participating in the VPP program that Tesla offers not only provides enrolled individuals with the opportunity to earn money, but it also contributes to grid stabilization by supporting local energy grids.

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Tesla Lathrop Megafactory celebrates massive Megapack battery milestone

The Tesla Megapack is the backbone of Tesla Energy’s battery deployments.

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Credit: Tesla Megapack/X

The Tesla Lathrop Megafactory recently achieved a new milestone. As per the official Tesla Megapack account on X, the Lathrop Megafactory has produced its 15,000th Megapack 2 XL battery.

15,000 Megapack Batteries

Tesla celebrated the milestone with a photo of the Lathrop Megafactory team posing with a freshly produced Megapack battery. To commemorate the event, the team held balloons that spelled out “15,000” as they posed for the photo.

The Tesla Megapack is the backbone of Tesla Energy’s battery deployments. Designed for grid-scale applications, each Megapack offers 3.9 MWh of energy and 1.9 MW of power. The battery is extremely scalable, making it perfect for massive energy storage projects.

https://twitter.com/Tesla_Megapack/status/1932578971700638203

More Megafactories

The Lathrop Megafactory is Tesla’s first dedicated facility for its flagship battery storage system. It currently stands as the largest utility-scale battery factory in North America. The facility is capable of producing 10,000 Megapack batteries every year, equal to 40 GWh of clean energy storage.

Thanks to the success of the Megapack, Tesla has expanded its energy business by building and launching the Shanghai Megafactory, which is also expected to produce 40 GWh of energy storage per year. The ramp of the Shanghai Megafactory is quite impressive, with Tesla noting in its Q1 2025 Update Letter that the Shanghai Megafactory managed to produce over 100 Megapack batteries in the first quarter alone.

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Tesla Energy’s Potential

During the first quarter earnings call, CEO Elon Musk stated that the Megapack is extremely valuable to the energy industry. 

“The Megapack enables utility companies to output far more total energy than would otherwise be the case… This is a massive unlock on total energy output of any given grid over the course of a year. And utility companies are beginning to realize this and are buying in our Megapacks at scale,” Musk said.

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Energy

Tesla Megapacks powers the xAI Colossus supercomputer

Tesla Megapacks step in to stabilize xAI’s Colossus supercomputer, replacing natural gas turbines. Musk’s ventures keep intertwining.

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(Credit: Tesla Megapack)

Tesla Megapack batteries will power the xAI Colossus supercomputer in Memphis to ensure power stability. The collaboration between Tesla and xAI highlights the synergy among Elon Musk’s ventures.

The artificial intelligence startup has integrated Tesla Megapacks to manage outages and demand surges, bolstering the facility’s reliability. The Greater Memphis Chamber announced that Colossus, recently connected to a new 150-megawatt electric substation, is completing its first construction phase. This transition addresses criticism from environmental justice groups over the initial use of natural gas turbines.

“The temporary natural gas turbines that were being used to power the Phase I GPUs prior to grid connection are now being demobilized and will be removed from the site over the next two months.

“About half of the operating turbines will remain operating to power Phase II GPUs of xAI until a second substation (#22) already in construction is completed and connected to the electric grid, which is planned for the Fall of 2025, at which time the remaining turbines will be relegated to a backup power role,” the Chamber stated.

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xAI’s rapid development of Colossus reflects its ambition to advance AI capabilities, but the project has faced scrutiny for environmental impacts. The shift to Megapacks and grid power aims to mitigate these concerns while ensuring operational continuity.

The Megapack deployment underscores the collaboration among Musk’s companies, including Tesla, SpaceX, Neuralink, and The Boring Company. Tesla appears to be the common link between all of Musk’s companies. For example, The Boring Company built a tunnel in Giga, Texas. In addition, Musk has hinted at a potential collaboration between the Tesla Optimus Bot and Neuralink. And from January 2024 to February 2025, xAI invested $230 million in Megapacks, per a Tesla filing.

Tesla Energy reported a 156% year-over-year increase in Q1 2025, deploying 10.4 GWh of storage products, including Megapacks and Powerwalls. Tesla’s plans for a new Megapack factory in Waller County, Texas, which is expected to create 1,500 jobs in the area, further signal its commitment to scaling energy solutions.

As xAI leverages Tesla’s Megapacks to power Colossus, the integration showcases Musk’s interconnected business ecosystem. The supercomputer’s enhanced stability positions xAI to drive AI innovation, while Tesla’s energy solutions gain prominence, setting the stage for broader technological and economic impacts.

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