Energy
Analysts and Energy Experts Weigh in on Tesla’s Powerwall
“Data wins” is the zeitgeist of today’s tech culture and number crunching is now being done by energy experts and analysts around Tesla’s new Powerwall products. Numerous analysts are focusing on the prodigious sums of capital being spent by Tesla in many product areas lately and now want to see if battery revenue will come sooner or later for the company.
According to Bidness ETC post, “UBS,the financial services firm, predicts that the 7kWh version of the Powerwall will have a payback in six years for the consumer, and will also deliver an Internal Rate of Return (IRR) of about 9%” in Australia for Tesla. UBS concludes a payback in little as six years will be very attractive in Australia and, if the project is reaping such a return, it means that the Powerwall will be adopted by the mass-market sooner than expected.”
The reason for the bullish prediction is due to Australia’s “massive solar penetration,” and total cost for the system at approximately $5,175 (U.S.), according to UBS.

Aug 30, TeslaEnergy event: Elon Musk describing the commercial-grade Tesla PowerPack’s ability to power entire cities.
Musk mentioned in the most recent conference call that the 7kWh battery pack would be ideal for countries outside the US. This seems to the be the case according to UBS and maybe Germany, too.
A recent post at the Catalytic Engineering blog examines the 7kWh powerwall product for Germany and how it could be a perfect fit due the frugal use of energy by consumers—partially due to its high cost in the country. According to the site, Germans average energy around 3,000-4,000 kWh /household/year, which works out to 8-11 kWh/day.”
The site ran a test case for Germany and see the summary below:
That means the baseline case, where you already have the solar panel, but don’t buy the Powerwall. As a result, you sell that surplus solar power directly to the grid at the $0.12 rate. After currency exchange and this earns a net present value of $2,911 over 10 years (again, in constant 2015 dollars).
The difference is so small with these assumptions, that buying the Powerwall basically breaks even versus not buying one. As prices come down and installers compete to install the product, it looks to be even more viable on a purely economic basis.
Also included in the post is an online calculator and the ability to determine whether your own solar panel setup is suited for a battery storage solution.
Data and context wins the day in the scenario above and past research by Navigant shows a great desire for green power (solar) by electric car owners. The only fly in the ointment is the death-to-solar agenda by utilities, such as WE Energy in Wisconsin and Arizona utilities (See Solar City’s letter). These utilities are attaching substantial fees to solar owners that negate or slow down a quicker return on investment.
So for the time being, it looks like data for battery storage is holding its own and flys in the face of Bloomberg’s Powerwall analysis from earlier this month.
Now if data would win in state capitols and in Congress, we could really be doing something.
Energy
Tesla VP hints at Solar Roof comeback with Giga New York push
The comments hint at possible renewed life for the Solar Roof program, which has seen years of slow growth since its 2016 unveiling.
Tesla’s long-awaited and way underrated Solar Roof may finally be getting its moment. During the company’s Q3 2025 earnings call, Vice President of Energy Engineering Michael Snyder revealed that production of a new residential solar panel has started at Tesla’s Buffalo, New York facility, with shipments to customers beginning in the first quarter of 2026.
The comments hint at possible renewed life for the Solar Roof program, which has seen years of slow growth since its 2016 unveiling.
Tesla Energy’s strong demand
Responding to an investor question about Tesla’s energy backlog, Snyder said demand for Megapack and Powerwall continues to be “really strong” into next year. He also noted positive customer feedback for the company’s new Megablock product, which is expected to start shipping from Houston in 2026.
“We’re seeing remarkable growth in the demand for AI and data center applications as hyperscalers and utilities have seen the versatility of the Megapack product. It increases reliability and relieves grid constraints,” he said.
Snyder also highlighted a “surge in residential solar demand in the US,” attributing the spike to recent policy changes that incentivize home installations. Tesla expects this trend to continue into 2026, helped by the rollout of a new solar lease product that makes adoption more affordable for homeowners.
Possible Solar Roof revival?
Perhaps the most intriguing part of Snyder’s remarks, however, was Tesla’s move to begin production of its “residential solar panel” in Buffalo, New York. He described the new panels as having “industry-leading aesthetics” and shape performance, language Tesla has used to market its Solar Roof tiles in the past.
“We also began production of our Tesla residential solar panel in our Buffalo factory, and we will be shipping that to customers starting Q1. The panel has industry-leading aesthetics and shape performance and demonstrates our continued commitment to US manufacturing,” Snyder said during the Q3 2025 earnings call.
Snyder did not explicitly name the product, though his reference to aesthetics has fueled speculation that Tesla may finally be preparing a large-scale and serious rollout of its Solar Roof line.
Originally unveiled in 2016, the Solar Roof was intended to transform rooftops into clean energy generators without compromising on design. However, despite early enthusiasm, production and installation volumes have remained limited for years. In 2023, a report from Wood Mackenzie claimed that there were only 3,000 operational Solar Roof installations across the United States at the time, far below forecasts. In response, the official Tesla Energy account on X stated that the report was “incorrect by a large margin.”
Energy
Tesla China’s Megafactory helps boost Shanghai’s battery exports by 20%: report
Located in the Lingang New Area of the Shanghai Free Trade Zone, the Tesla Megafactory has been running at full throttle since opening in February.
Reports from China have indicated that the Tesla Shanghai Megafactory has become a notable player in China’s booming battery export market.
Located in the Lingang New Area of the Shanghai Free Trade Zone, the Tesla Megafactory has been running at full throttle since opening in February. It produces Tesla Megapack batteries for domestic and international use.
Tesla Shanghai Megafactory
As noted in a report from Sina Finance, the Tesla Shanghai Megafactory’s output of Megapack batteries helped drive a notable rise in lithium battery shipments from the city in the first three quarters of 2025. This is quite impressive as the Megafactory is a rather young facility, though it has been steadily increasing its production capacity.
“The establishment of this benchmark factory has not only driven the rapid development of Shanghai’s energy storage industry but also become a new growth engine for foreign trade exports. Driven by the Tesla energy storage factory’s opening, Shanghai’s lithium battery exports reached 32.15 billion yuan ($4.5 billion) in the first three quarters, a 20.7% increase,” the publication wrote.
Ultimately, the Shanghai Megafactory has proved helpful to the city’s “new three” industries, which are comprised of new energy vehicles, lithium batteries, and photovoltaic systems. Exports of the “new three” products reached 112.17 billion yuan ($15.7 billion), a 6.3% year-over-year increase during the same period. The city’s total trade volume grew 5.4% year-over-year as well, with exports up 11.3%, driven largely by the clean energy sector’s performance.
Energy storage is helping Shanghai
Since opening in February, the Shanghai Megafactory has been firing on all cylinders. In late July, Tesla Energy announced that the new battery factory has successfully produced its 1,000th Megapack unit. That’s quite impressive for a facility that, at the time, had only been operational for less than six months.
Speed has always been a trademark of the Shanghai Megafactory. Similar to Tesla’s other key facilities in China, the Megafactory was constructed quickly. The facility started its construction on May 23, 2024. Less than a year later, the site officially started producing Megapack batteries. By late March 2025, Tesla China noted that it had shipped the first batch of Megapack batteries from the Shanghai plant to foreign markets.
Energy
Tesla recalls Powerwall 2 units in Australia
Tesla will recall Powerwall 2 units in Australia after a handful of property owners reported fires that caused “minor property damage.” The fires were attributed to cells used by Tesla in the Powerwall 2.
Tesla Powerwall is a battery storage unit that retains energy from solar panels and is used by homeowners and businesses to maintain power in the event of an outage. It also helps alleviate the need to rely on the grid, which can help stabilize power locally.
Powerwall owners can also enroll in the Virtual Power Plant (VPP) program, which allows them to sell energy back to the grid, helping to reduce energy bills. Tesla revealed last year that over 100,000 Powerwalls were participating in the program.
Tesla announces 100k Powerwalls are participating in Virtual Power Plants
The Australia Competition and Consumer Commission said in a filing that it received several reports from owners of fires that led to minor damage. The Australian government agency did not disclose the number of units impacted by the recall.
The issue is related to the cells, which Tesla sources from a third-party company.
Anyone whose Powerwall 2 unit is impacted by the recall will be notified through the Tesla app, the company said.
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