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Tesla Solar Roof 15kW installation completed in 4 days: Time-lapse video

(Credit: Weddle and Sons Roofing/YouTube

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A recent video posted by Weddle and Sons Roofing has revealed how fast a 4,000 sq.ft. (about 372 sq.m) roof could be replaced with Tesla Energy’s Solar Roof tiles. The roofing company installed a sizeable 15kW Tesla Solar Roof system on a Topeka, Kansas house. The entire installation, including PV tiles, glass tiles, and flashings, took a total of four days to complete.

The Friday before Weddle and Sons Roofings installed Tesla Solar Roof, the existing roof and dry-in with double-layer Firestone underlayment was torn off the house. Based on the roofing company’s description, tearing off the existing roof seemed to take only one day.

In total, the 15kW Tesla Solar Roof installation, covering 4,000 sq.ft. (about 372 sq.m) seemed to take only five days, including the tear-down of the old roof. For comparison, it usually takes several days to install a new roof, depending on the material used.

According to amconstruct.com, the estimated time for roof installations are as follows:

  • Wooden Shingles – 3 – 4 days
  • Slate Tiles and Shingles – 6 – 7 days
  • Asphalt Shingles – 1 – 2 days
  • Concrete Tiles and Shingles – 8 – 9 days
(Credit: Weddle and Sons Roofing/YouTube

Elon Musk announced the release of Tesla Solar Roof Version 3 during the EV automaker’s Q3 earnings call in 2019. Tesla scaled-up production of its Solar Roof at Gigafactory New York once Version 3 was ready.

Installation for the latest iteration of Solar Roof steadily picked up at the beginning of this year, before COVID broke out. In February, Tesla CEO Elon Musk tweeted that the company was planning to ramp Solar Roof installation across the United States.

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Along with the announcement, Musk included a link to Tesla’s Solar Roof Team page, subtly inviting people to apply for the company’s open positions for roofers, installers, and electricians. Musk has stated in the past that Tesla will need more manpower (i.e. roofers, installers, and electricians) to ramp Solar Roof installation.

COVID ultimately stalled some of Tesla Energy’s progress with production and installation of Solar Roof V3. However, Elon Musk and the rest of the Tesla team remained positive that Solar Roof installation could get back up and running despite the pandemic.

“And internally, we want to have at least 1,000 Solar Roof install teams with — and taking a week or perhaps a little less than a week to do an install, which gets you 1,000 a week roof installations. We see demand is good. Production is good. So it’s really all about the install,” said Elon Musk during the Q1 2020 earnings call.

The CEO also talked about Solar Roof’s rising demand globally. He alluded to expanding Tesla Solar Roof installations internationally by the end of the year back in February 2020 before the pandemic hit.

“And then like I said, also build out the training, the very diverse group of companies in the roofing industry to also install Solar Roof that, I think will scale — allow us to scale far beyond 1,000 a week. We’re also seeing a lot of interest outside of North America. So we do expect this to be a product that is international and actually seeing a tremendous amount of interest from China on the Solar Roof. So we’re confident, this will be a very significant product for the Company over time,” Musk said.

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Watch a timelapse of Weddle and Sons Roofing’s Tesla Solar Roof installation in the video below.

Maria--aka "M"-- is an experienced writer and book editor. She's written about several topics including health, tech, and politics. As a book editor, she's worked with authors who write Sci-Fi, Romance, and Dark Fantasy. M loves hearing from TESLARATI readers. If you have any tips or article ideas, contact her at maria@teslarati.com or via X, @Writer_01001101.

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Tesla new Model Y needs a telescope to see its closest competitor in China

With the new Model Y now being delivered to domestic customers, Tesla China’s new vehicle registrations have seen a notable rise.

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Credit: Tesla China

Tesla China’s vehicle sales saw a strong recovery once the new Model Y started customer deliveries. This could be seen in China’s rankings for premium battery electric SUVs priced from RMB 200,000 to RMB 300,000 during the week of March 10-16, 2025.

As per the week’s rankings, the new Model Y’s sales are so far ahead, it would need a telescope to see its closest competitor.

Tesla China’s February Results

A look at the mainstream news cycle would show that Tesla China saw a notable drop in February. During the month, Tesla sold 30,688 vehicles wholesale, a 51.47% decline from January’s 63,238 and a 49.16% slide from the 60,365 that were sold wholesale in February 2024. 

It should be noted that the new Model Y only started local deliveries in the final days of February. This meant that for the majority of the month, Tesla China was mostly clearing out its inventory of Model Y classic units. This essentially resulted in Tesla China’s strongest seller being throttled for most of February. This will likely not be the case this March.

New Model Y’s March Comeback

With the new Model Y now being delivered to domestic customers, Tesla China’s new vehicle registrations have seen a notable rise. During the week of March 10-16, 2025, Tesla China saw 15,300 new vehicle registrations, the highest for the quarter. These figures were bolstered by the new Model Y, whose local sales reached 9,451 units during the week. 

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With 9,451 units sold during the week ending March 16, the new Model Y became China’s best-selling premium electric SUV priced from RMB 200,000 to RMB 300,000. This is a notable accomplishment for the new Model Y, especially since its closest competitor, the Zeekr 7X, was able to sell just 1,390 units during the same week. That’s just about 14% of the new Model Y’s sales.

Tesla China’s Potential Q1 Results

Considering that Tesla China did not start local deliveries of the new Model Y until late February, it would not be surprising if the electric vehicle maker’s first quarter delivery numbers show a year-over-year decline. A clearer view of the new Model Y’s overall effect on Tesla China’s local sales would likely become more evident in the coming quarters.

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Tesla to explore the limits of casting with Cybercab line

Tesla expects to produce 2 million units of the Cybercab per year.

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Credit: @serobinsonjr/X

Tesla tends to push the limit of automotive manufacturing processes. This was true for the Model Y and its front and rear megacasts, and it will likely also be true for the Cybercab, which is expected to start volume production sometime in 2026.

This was, at least, as per CEO Elon Musk during the company’s Q1 2025 All-Hands meeting.

Cybercab Potential

While the Model Y and Model 3 are already high-volume vehicles, Tesla expects to produce vastly more Cybercabs per year. During the Q3 2024 earnings call, the CEO explained that Tesla is aiming to produce at least 2 million Cybercabs annually

At 2 million units per year, Musk noted that the Cybercab will be produced in more than one factory. In 2026, however, expectations are high that the Cybercab will be produced in Gigafactory Texas

One Cybercab every 5 Seconds

Tesla has highlighted in its Q4 2024 Update letter that the Cybercab will be produced using the company’s revolutionary “unboxed” process, which is optimized for speed and efficiency. Musk highlighted this during the Q1 2025 All-Hands meeting, when he stated that the Cybercab’s lines don’t even look like a regular automotive production line. 

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“We do want to scale up production to new heights obviously with the Cybercab. Cybercab is not just revolutionary car design. It’s also a revolutionary manufacturing process. So I guess we probably don’t talk about that enough, but if you’ve seen the design of the Cybercab line, it doesn’t look like a normal car manufacturing line. It looks like a really high-speed consumer electronics line. 

“In fact, the line will move so fast that that actually people can’t even get close to it. I think it’ll be able to produce a car ultimately in less than 5 seconds. Can you imagine a car coming off the line in less than 5 seconds? That’s like, ‘Whoa.’ Which means casting’s got to happen fast. I mean we got to jam the the liquid metal in and cool it down real fast,” Musk said.

The Limits of Casting

Hitting an insane target such as one Cybercab every 5 seconds would require Tesla to completely rethink vehicle production. During the All-Hands meeting, Musk noted that Tesla would probably require even larger casting machines that would be capable of producing multiple components at once. Overall, the CEO seemed excited about the idea, as he noted that it would be fun to see just how big casting machines could be.

“I guess maybe we need to just get even bigger casting machines? Sure why not, you know, I’m down. 50,000 tons. Cause then we could do like five at a time or something. I’m trying to think like how do you scale castings, because you got liquid metal, metal’s got to cool, and you’ve got to automate getting all the bits and pieces off the casting so it’s usable?

“And that’s actually kind of how they do it in small-volume castings. They have a casting block that’ll make, you know, 100 Matchbox cars at a time. Maybe we can just make that real big. I mean, we have the Cathedral of Castings back there. So yeah, let’s do that. I mean, let’s see what is the limit of physics of how big can a casting machine be. Let’s find out. I’m down. Let’s have some fun here, push the limits of technology,” Musk stated.

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Tesla pauses FSD free trial in China as it waits for regulatory approval

Tesla has halted its FSD free trial in China. New autonomous driving rules may slow things down, and U.S.-China tensions aren’t helping.

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Credit: @MexicoTesla/X

Tesla paused its Full Self-Driving (FSD) free trial offer in China while awaiting regulatory approval.

Earlier this month, Tesla China announced it would offer customers a free FSD trial from March 17 until April 16, 2025. The limited-time offer would be available to Chinese customers whose cars were compatible with Tesla FSD’s hardware and software and had the newest version of navigation maps.

However, on Monday, March 24, Tesla received complaints stating that the company had temporarily paused its FSD free trial offer, reported Reuters.

“All parties are actively advancing the relevant process, and we will push it to you as soon as it is ready. We are also looking forward to it, please wait patiently,” responded Tesla’s customer support on Weibo.

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Tesla has not officially provided a reason for the pause. However, a few factors might have contributed to Tesla’s decision to pause its FSD free trial offer.

In February, China’s Industry Ministry issued new rules for autonomous driving that might have affected Tesla’s free trial FSD offer. The new rules state that over-the-air updates related to autonomous driving are subject to regulatory approval. The Industry Ministry’s new rules for autonomous driving updates would likely slow down the release of Tesla FSD and autonomous driving features from other companies in China as well.

Besides the new rules, Tesla FSD is still awaiting regulatory approval in China. Rising tensions between the United States and the Chinese governments might delay Tesla FSD’s approval.

“Then China, which is a gigantic market, we do have some challenges because they weren’t — they currently allow us to transfer training video outside of China. And then the US government won’t let us do training in China. So, we’re in a bit of a there. It’s like a quandary,” Musk commented during the last TSLA earnings call.

China’s strict data laws have led Tesla to find other ways to train FSD. Tesla is working with the Chinese tech company Baidu to help FSD learn and navigate the roads in China.

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