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

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.
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.
Watch a timelapse of Weddle and Sons Roofing’s Tesla Solar Roof installation in the video below.
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Tesla exec: Preparations underway but no firm timeline yet for FSD rollout in China
The information was related by Tesla China Vice President Grace Tao in a comment to local media.
Tesla has not set a specific launch date for Full Self-Driving in China, despite the company’s ongoing preparations for a local FSD rollout.
The information was related by Tesla China Vice President Grace Tao in a comment to local media.
Tesla China prepares FSD infrastructure
Speaking in a recent media interview, the executive confirmed that Tesla has established a local training center in China to support the full adaptation of FSD to domestic driving conditions, as noted in a report from Sina News. However, she also noted that the company does not have a specific date when FSD will officially roll out in China.
“We have set up a local training center in China specifically to handle this adaptation,” Tao said. “Once officially released, it will demonstrate a level of performance that is no less than, and may even surpass, that of local drivers.”
Tao also emphasized the rapid accumulation of data by Tesla’s FSD system, with the executive highlighting that Full Self-Driving has now accumulated more than 7.5 billion miles of real-world driving data worldwide.
Possible 2026 rollout
The Tesla executive’s comments come amidst Elon Musk’s previous comments suggesting that regulatory approval in China could arrive sometime this 2026. During Tesla’s annual shareholder meeting in November 2025, Musk clarified that FSD had only received “partial approval” in China, though full authorization could potentially arrive around February or March 2026.
Musk reiterated that timeline at the World Economic Forum in Davos, when he stated that FSD approval in China could come as early as February.
Tesla’s latest FSD software, version 14, is already being tested in more advanced deployments in the United States. The company has also started the rollout of its fully unsupervised Robotaxis in Austin, Texas, which no longer feature safety monitors.
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Tesla Semi lines up for $165M in California incentives ahead of mass production
The update was initially reported by The Los Angeles Times.
Tesla is reportedly positioned to receive roughly $165 million in California clean-truck incentives for its Semi.
The update was initially reported by The Los Angeles Times.
As per the Times, the Tesla Semi’s funding will come from California’s Hybrid and Zero-Emission Truck and Bus Incentive Project (HVIP), which was designed to accelerate the adoption of cleaner medium- and heavy-duty vehicles. Since its launch in 2009, the HVIP has distributed more than $1.6 billion to support zero-emission trucks and buses across the state.
In recent funding rounds, nearly 1,000 HVIP vouchers were provisionally reserved for the Tesla Semi, giving Tesla a far larger share of available funding than any other automaker. An analysis by the Times found that even after revisions to public data, Tesla still accounts for about $165 million in incentives. The next-largest recipient, Canadian bus manufacturer New Flyer, received roughly $68 million.
This is quite unsurprising, however, considering that the Tesla Semi does not have a lot of competition in the zero-emissions trucking segment.
To qualify for HVIP funding, vehicles must be approved by the California Air Resources Board and listed in the program catalog, as noted in an electrive report. When the Tesla Semi voucher applications were submitted, public certification records only showed eligibility for the 2024 model year, with later model years not yet listed.
State officials have stated that certification details often involve confidential business information and that funding will only be paid once vehicles are fully approved and delivered. Still, the first-come, first-served nature of HVIP means large voucher reservations can effectively crowd out competing electric trucks. Incentive amounts for the Semi reportedly ranged from about $84,000 to as much as $351,000 per vehicle after data adjustments.
Unveiled in 2017, the Tesla Semi has seen limited deliveries so far, though CEO Elon Musk has recently reiterated that the Class 8 all-electric truck will enter mass production this year.
Elon Musk
Tesla reveals major info about the Semi as it heads toward ‘mass production’
Some information, like trim levels and their specs were not revealed by Tesla, but now that the Semi is headed toward mass production this year, the company finally revealed those specifics.
Tesla has revealed some major information about the all-electric Semi as it heads toward “mass production,” according to CEO Elon Musk.
The Semi has been working toward a wider production phase after several years of development, pilot programs, and the construction of a dedicated production facility that is specifically catered to the manufacturing of the vehicle.
However, some information, like trim levels and their specs were not revealed by Tesla, but now that the Semi is headed toward mass production this year, the company finally revealed those specifics.
Tesla Semi undergoes major redesign as dedicated factory preps for deliveries
Tesla plans to build a Standard Range and Long Range Trim level of the Semi, and while the range is noted in the company’s newly-released spec list, there is no indication of what battery size will be equipped by them. However, there is a notable weight difference between the two of roughly 3,000 lbs, and the Long Range configuration has a lightning-fast peak charging speed of 1.2 MW.
This information is not available for the Standard Range quite yet.
The spec list is as follows:
- Standard Range:
- 325 miles of range (at 82,000 lbs gross combination weight
- Curb Weight: <20,000
- Energy Consumption: 1.7 kWh per mile
- Powertrain: 3 independent motors on rear axles
- Charging: Up to 60% of range in 30 minutes
- Charge Type: MCS 3.2
- Drive Power: Up to 800 kW
- ePTO (Electric Power Take Off): Up to 25 kW
- Long Range:
- Range: 500 miles (at 82,000 lbs gross combination weight)
- Curb Weight: 23,000 lbs
- Energy Consumption: 1.7 kWh per mile
- Powertrain: 3 independent motors on rear axles
- Charging: Up to 60% of range in 30 minutes
- Charge Type: MCS 3.2
- Peak charging speed: 1.2MW (1,200kW)
- Drive Power: Up to 800 kW
- ePTO (Electric Power Take Off): Up to 25 kW
It is important to keep in mind that the Semi is currently spec’d for local runs, and Tesla has not yet released or developed a sleeper cabin that would be more suitable for longer trips, cross-country hauls, and overnight travel.
Tesla Semi sleeper section and large side storage teased in new video
Instead, the vehicle will be initially used for regional deliveries, as it has in the pilot programs for Pepsi Co. and Frito-Lay for the past several years.
It will enter mass production this year, Musk confirmed on X over the weekend.
Now that the company’s dedicated Semi production facility in Sparks, Nevada, is standing, the timeline seems much more realistic as the vehicle has had its mass manufacturing date adjusted on several occasions.