

Energy
New Tesla Solar Roof variants spotted being tested near Fremont Factory
It appears that Tesla is hard at work testing what could very well be the next variants of its flagship residential solar product, the Solar Roof. As could be seen in a recent flyover around Tesla’s Fremont facilities, the company seems to be testing some tiles with a wood-like appearance, as well as some that feature a similar shade to the “slate” tiles that Elon Musk unveiled back in 2016.
A recent flyover of the Fremont Factory from drone operator Gabeincal revealed some notable activities happening in Tesla’s primary EV production site. This time around, the drone operator was able to capture some images of the refresh Model S and Model X at the Fremont Factory test track and one of the Giga Press machines in action. Tesla’s Kato Road facility, which hosts the company’s pilot production line for its 4680 cells, was reportedly full of employee cars as well.
But amidst these activities, one thing that genuinely drew attention was the test houses that Tesla used for its Solar Roof tiles. The video showed three structures that seemed to be undergoing testing, each with a different type of Solar Roof. One appeared to have been fitted with some dark, smooth, or textured tiles; another with what seemed like simulated cedar tiles, and another with tiles that featured a slate-like shade.
The cedar-like tiles in one of the test houses are particularly interesting considering that such a variant was not initially announced by Elon Musk during the Solar Roof’s unveiling back in 2016. During the tiles’ unveiling ceremony, Musk announced four variants that would eventually be available for ordering: a Smooth tile, a Textured tile, a curved Tuscan tile, and some stunning gray Slate tiles. So far, Tesla’s Solar Roof installations have only been comprised of Textured tiles.
Despite this, Tesla’s patents have suggested that the company is pursuing some new Solar Roof variants. One such patent was issued last March, and it described a way for Tesla to obscure, color match, and camouflage its Solar Roof in a way that makes the tiles almost indiscernible from traditional roofing materials. Tesla’s illustrations in the patent hinted at variants of the Solar Roof that are yet to be released, such as the Tuscan and Slate tiles.
It would not be surprising if Tesla is now exploring Solar Roof variants beyond the initial four designs that were announced in late 2016. Cedar Solar Roofs would be a good expansion from the Textured tiles that the company is producing today, after all, as wood shingles have been used in colonial American homes for many years, partly due to their excellent insulation properties and durability. If Tesla does release a Cedar Solar Roof variant, it would not be surprising if it becomes a great seller among homeowners.
Elon Musk has noted that the Solar Roof’s potential would likely be evident this 2021. “I think a future where we’ve got beautiful roofs generating energy that are tough and resilient and better in every way than a natural roof and alive with energy, that’s the future we want. Solar Roof is a killer product. This will become obvious next year,” Musk said in a previous earnings call.
Watch a recent drone flyover of Tesla’s Fremont facilities in the video below.
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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.
Energy
Tesla’s new Megablock system can power 400,000 homes in under a month
Tesla also unveiled the Megapack 3, the latest iteration of its flagship utility scale battery.

Tesla has unveiled the Megablock and Megapack 3, the latest additions to its industrial-scale battery storage solution lineup.
The products highlight Tesla Energy’s growing role in the company, as well as the division’s growing efforts to provide sustainable energy solutions for industrial-scale applications.
Megablock targets speed and scale
During the “Las Megas” event in Las Vegas, Tesla launched Megablock, a pre-engineered medium-voltage block designed to integrate Megapack 3 units in a plug-and-play system. Capable of 20 MWh AC with a 25-year life cycle and more than 10,000 cycles, the Megablock could achieve 91% round-trip efficiency at medium voltage, inclusive of auxiliary loads.
Tesla emphasized that Megablock can be installed 23% faster with up to 40% lower construction costs. The platform eliminates above-ground cabling through a new flexible busbar assembly and delivers site-level density of 248 MWh per acre. With Megablock, Tesla is also aiming to commission 1 GWh in just 20 business days, or enough to power 400,000 homes in less than a month.
“With Megablock, we are targeting to commission 1 GWh in 20 business days, which is the equivalent of bringing power to 400,000 homes in less than a month. It’s crazy. How are we planning to do that? Like most things at Tesla, we are ruthlessly attacking every opportunity to save our customers time, simplify the process, remove steps, (and) automate as much as we can,” the company said.
Megapack 3 is all about simplicity
The Megapack 3 is Tesla’s next-generation utility battery, designed with a simplified architecture that cuts 78% of connections compared to the previous version. Its thermal bay is drastically simplified, and it uses a Model Y heat pump on steroids. The battery weighs about 86,000 pounds and holds 5 MWh of usable AC energy. Tesla engineers incorporated a larger battery module and a new 2.8-liter LFP cell co-developed with the company’s cell team.
The Megapack 3 is designed for serviceability, and it features easier front access and no roof penetrations. About 75% of Megapack 3’s total mass is battery cells, with individual modules weighing as much as a Cybertruck. It’s also tough, with an ambient operating temperature range from -40C to 60C. This should allow the Megapack 3 to operate optimally from the coldest to the hottest regions on the planet.
Production is set to begin at Tesla’s Houston Megafactory in late 2026, with planned capacity of 50 GWh per year. Additional supply will come from Tesla’s 7 GWh LFP facility in Nevada, which is expected to open in 2025, as well as with third-party partners.
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