Tesla releases more details on Powerwall 3, confirms cheaper stack coming
Tesla has released more details about Powerwall 3, its new generation home energy storage system, and there’s some more good news.
Electrek first reported that Tesla started Powerwall 3 installations in the US despite having yet to launch the product on its website officially back in September.
As we previously reported, the biggest difference with the Powerwall 3 is a higher power output of 11.5 KW continuous and an integrated solar inverter.
Tesla CEO Elon Musk later confirmed that the new Powerwall 3 also has a massively impressive peak power output of 30 kW.
The company continued to use both the Powerwall 2+ and the Powerwall 3 based on what made the most sense for each installation and as it ramps up the new unit.
But these are just some of the improvements that the new Powerwall 3 is bringing. Tesla is still working on a few more things enabled by the Powerwall 3 technology.
Tesla has now produced a webinar for its installers about the new Powerwall 3 that revealed a few more interesting details.
Again, there’s no doubt that the power and load capacity is the biggest upgrade of Powerwall 3:
Most Powerwall 2 installations involved more than one unit, but that had to do more with the power limitations than the energy capacity. Households needed more continuous power capacity to run critical electric equipment on the battery pack.
With the same 13.5 kWh energy capacity, a single Powerwall 3 can power an average household for hours.
For those who need more energy capacity, Powerwall 3 is also going to be easier and cheaper to stack.
Tesla says that it is working on a new version of the Powerwall 3 without power inverter components to stack with a full Powerwall 3.
This new capacity means that you can combine 4 Powerwall 3s together for a power capacity of 46 kW and energy capacity of 54 kWh, but that’s a weird power-energy mix that is not ideal for most projects.
However, this upcoming new stackable units without power inverter, which Tesla calls ‘DC Expansion’, means that you can do a different configuration focused on adding more energy capacity:
A single of these units on the right (one full Powerwall and 3 ‘DC expansions’) would theoretically have a continuous power capacity of 11.5 kW and an energy capacity of 54 kWh.
The upcoming DC Expansion unit is going to be $1,000 cheaper than the Powerwall 3, which is listed at $9,300 before incentives.
In the webinar, Tesla also confirmed that Powerwall 3 is using LFP battery cells, like its Megapack.
The less energy-dense battery chemistry is ideal for stationary energy storage projects as it offers better longevity.
Tesla currently offers $500 off Powerwall orders if you place the order with a referral code. The energy storage unit is also eligible to the 30% tax credit.
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China just laid out a plan to roll out over 100,000 ultra-fast EV charging stations by 2027 – and they’ll all be open to the public.
The National Development and Reform Commission’s (NDRC) joint notice, issued on Monday, asks local authorities to put together construction plans for highway service areas and prioritize the ones that see 40% or more usage during holiday travel rushes.
The NDRC notes that China’s ultra-fast EV charging infrastructure needs upgrading as more 800V EVs hit the road. Those high-voltage platforms can handle super-fast charging in as little as 10 to 30 minutes, but only if the charging hardware is up to speed.
China had 31.4 million EVs on the road at the end of 2024 – nearly 9% of the country’s total vehicle fleet. But charging access is still catching up. As of May 2025, there were 14.4 million charging points, or roughly 1 for every 2.2 EVs.
To keep the grid running smoothly, China wants new chargers to be smart, with dynamic pricing to incentivize off-peak charging and solar and storage to power the charging stations.
To make the business side work, the government is pushing for 10-year leases for charging station operators, and it’s backing the buildout with local government bonds.
The NDRC emphasized that the DC fast chargers built will be open to the public. This is a big deal because a lot of fast chargers in China aren’t. For example, BYD’s new megawatt chargers aren’t open to third-party vehicles.
As of September 2024, China had expanded its charging infrastructure to 11.4 million EV chargers, but only 3.3 million were public.
Read more: California now has nearly 50% more EV chargers than gas nozzles
If you live in an area that has frequent natural disaster events, and are interested in making your home more resilient to power outages, consider going solar and adding a battery storage system. To make sure you find a trusted, reliable solar installer near you that offers competitive pricing, check out EnergySage, a free service that makes it easy for you to go solar. They have hundreds of pre-vetted solar installers competing for your business, ensuring you get high quality solutions and save 20-30% compared to going it alone. Plus, it’s free to use and you won’t get sales calls until you select an installer and share your phone number with them.
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Tesla is starting to experience some consequences for misleading Full Self Driving customers – at least that’s the finding of one arbitration ruling that has Tesla refunding one customer $10,000 plus legal fees for failing to deliver on their promises. Find out more on today’s legally challenging episode of Quick Charge!
An arbitration “court” found that Tesla misled customers with its Full Self Driving product, and has now been forced to refund at least one person’s $10,000 payment (plus legal fees) for the not-quite autonomous driving software. France, too, is piling on claims of deceptive business practices – but there’s some good news for FSD fans! If you’re still willing to pay for it, Tesla will thrown in 0% financing on a brand new Cybertruck.
Check out the relevant links, below, to learn more.
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If you’re considering going solar, it’s always a good idea to get quotes from a few installers. To make sure you find a trusted, reliable solar installer near you that offers competitive pricing, check out EnergySage, a free service that makes it easy for you to go solar. It has hundreds of pre-vetted solar installers competing for your business, ensuring you get high-quality solutions and save 20-30% compared to going it alone. Plus, it’s free to use, and you won’t get sales calls until you select an installer and share your phone number with them.
Your personalized solar quotes are easy to compare online and you’ll get access to unbiased Energy Advisors to help you every step of the way. Get started here.
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