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Tesla Solar Roof V3 shows a more cautious Elon Musk, and that’s a good thing

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Tesla CEO Elon Musk has previously stated that 2019 will be the year of the Solar Roof, the company’s flagship solar product. This prediction almost seemed like it was forgotten for some time, until now, with the electric car maker launching its Solar Roof V3 (now named Solarglass) last Friday. Solar Roof V3 appears to be yet another sign of a change in Tesla’s CEO, one which indicates that Elon Musk has become more cautious, much to the benefit of the electric car and energy company. 

The original Solar Roof tiles were unveiled in 2016 following Tesla’s acquisition of Solar City. Marketed as a more aesthetically pleasing solution for homeowners who wish to get the benefits of a photovoltaic system without committing to traditional rooftop solar panels, the Solar Roof tiles were intended by Tesla to be a revolutionary product, much like its electric vehicle line. Unfortunately, the Solar Roof saw multiple delays, and up until today, only a few installations of the rooftop system have been completed. 

So notable was the delay in the Solar Roof rollout that the company’s critics actually began claiming that the product will never be produced. Reports of a Gigafactory 2 in Buffalo that was allegedly not being used to its full potential did not help the company’s narrative. Tesla, for its part, stood firm, with Elon Musk explaining that the Solar Roof tiles are taking longer than usual to release due to the product’s long development cycle. If last Friday was any indication, it appears that Elon Musk’s statements about the Solar Roof tiles were actually true, and the company was only ensuring that the shingles were fully ready before they were ramped. 

Solar Roof V3 (or Solarglass, as Musk calls it), is the culmination of all the waiting and refinement that the company has performed on its flagship rooftop solar product. This time around, the solar tiles are bigger at 45″ long by 15″ wide, far larger than the 14″ long by 9″ wide tiles of the first generation producr. This larger size comes with several benefits, including lower cost of production and increased power density, and easier installation. The number of parts in the Solar Roof itself has been reduced due to the larger tiles as well, making the system less prone to potential faults. 

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These improvements are all centered on one concept: efficiency. While the first iteration of the Solar Roof unveiled by Tesla in 2016 was all about the tiles’ appearance, V3 is all about appearance and practicality. Since they’re larger, employees at Gigafactory 2 in Buffalo, NY will be able to manufacture them at a faster rate. Installers will also have a far easier time fitting the tiles into customers’ homes. These advantages have the potential to allow Tesla to ramp its Solar Roof V3 installations quickly. 

Ultimately, these improvements to the Solar Roof would not have been made possible with a brash leader at the helm. Elon Musk is known as a CEO that is bold and prone to taking risks, yet with the Solar Roof, he appears to have adopted a far more cautious approach, something that seems to be the right decision considering the potential of the product. The Solar Roof is the solar product that will set Tesla apart from competitors, and the company would be unwise to release a version of the tiles that could not be ramped easily. After all, Tesla Energy has the potential to be a huge business for the Silicon Valley-based company, as noted by Elon Musk during the Q3 2019 earnings call. 

“In the long term, I expect Tesla Energy to be of the same or roughly the same size as Tesla’s automotive sector or business. This is the most underappreciated group. I think it could be bigger, but it’s certainly of a similar magnitude to Tesla Solar. Meaning, if you take Tesla Solar plus battery stuff, Tesla Energy is, I think, the least appreciated element,” Musk said. 

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Simon is an experienced automotive reporter with a passion for electric cars and clean energy. Fascinated by the world envisioned by Elon Musk, he hopes to make it to Mars (at least as a tourist) someday. For stories or tips--or even to just say a simple hello--send a message to his email, simon@teslarati.com or his handle on X, @ResidentSponge.

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Elon Musk

Why SpaceX just made a $60 billion bet on AI coding ahead of historic IPO

SpaceX has secured an option to acquire Cursor AI for $60 billion ahead of its historic IPO.

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SpaceX announced today it has struck a deal with AI coding startup Cursor, securing the option to acquire the company outright for $60 billion later this year, while committing $10 billion for joint development work in the interim. The announcement described the partnership as building “the world’s best coding and knowledge work AI,” and comes just days after Cursor was separately reported to be raising $2 billion at a valuation above $50 billion.

The move makes strategic sense given where each company currently stands. Cursor currently pays retail prices to Anthropic and OpenAI to the same companies competing directly against it with Claude Code and Codex. That means every dollar of revenue Cursor earns partially funds its own competition. With SpaceX bringing computational infrastructure to the Cursor platform, that could reduce Cursor’s dependence on OpenAI and Anthropic’s Claude AI as its providers. Access to SpaceX’s Colossus supercomputer, with compute equivalent to one million Nvidia H100 chips, gives Cursor the infrastructure to run and train its own models at a scale it could never afford independently. That one change restructures the entire unit economics of the business.

Elon Musk teases crazy outlook for xAI against its competitors

Cursor’s $2 billion in annualized revenue and enterprise reach across more than half of Fortune 500 companies gives SpaceX something its xAI subsidiary currently lacks, which is a proven, fast-growing software business with real enterprise distribution.

For Cursor, SpaceX’s $10 billion in joint development funding is transformational. Cursor raised $3.3 billion across all of 2025 to reach that $2 billion in revenue. A single $10 billion commitment from SpaceX, even as a development payment rather than an acquisition, dwarfs everything Cursor has raised in its entire existence. That capital accelerates product development, enterprise sales infrastructure, and proprietary model training simultaneously.

The timing is deliberate. SpaceX filed confidentially with the SEC on April 1, 2026, targeting a June listing at a $1.75 trillion valuation, in what would be the largest public offering in history. The company is expected to begin its roadshow the week of June 8, with Bank of America, Goldman Sachs, JPMorgan, and Morgan Stanley serving as underwriters. Adding Cursor to the portfolio before that roadshow gives IPO investors a concrete enterprise software revenue story to price in, alongside rockets and satellite internet.

The deal also addresses a weakness that became visible after February’s xAI merger. Several xAI co-founders departed following that acquisition, and SpaceX had already hired two Cursor engineers, signaling where its AI talent strategy was heading. Cursor, for its part, faces a pricing disadvantage competing against Anthropic’s Claude Code.

Whether SpaceX exercises the full acquisition option before its IPO or after remains the open question. Either way, this deal reshapes what investors will be buying into when SpaceX goes public.

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Tesla Supercharger for Business exposes jaw-dropping ROI gap between best and worst locations

Tesla’s new Supercharger for Business calculator reveals an eye-opening all-in cost and location-based ROI projections.

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tesla v4 supercharger

Tesla has launched an online calculator for its Supercharger for Business program, giving property owners their first transparent look at what it really costs to install Superchargers on site and what kind of return they can expect.

The program itself launched in September 2025, allowing businesses to purchase and operate Supercharger hardware on their own property while Tesla handles installation, maintenance, software, and 24/7 driver support. As Teslarati reported at launch, hosts also get their logo placed on the chargers and their location integrated into Tesla’s in-car navigation, meaning drivers are actively routed there. The stalls are open to all EVs, not just Teslas.


The new online calculator, announced by Tesla on Wednesday with the note that “simplicity and transparency” have been a problem in the industry, lets any business enter a U.S. address and get a real cost and revenue model. A standard 8-stall V4 Supercharger site runs approximately $500,000 in hardware and $55,000 per post for installation, bringing an all-in price just shy of $1 million. Tesla charges a flat $0.10 per kWh fee to cover software, billing, and network operations. Businesses set their own retail price and keep the margin above that fee.

Tesla expands its branded ‘For Business’ Superchargers

 

Taking a look at Tesla’s Supercharger for Business online calculator, we can see that ROI is not uniform, and the gap between a strong location and a poor one can stretch the breakeven point by several years.

The biggest driver is foot traffic and how long people stay. A busy rest station, hotel, or outlet mall brings in repeat visitors who need to charge while they’re already stopped, pushing utilization numbers higher and shortening payback time.

Tesla Supercharger for Business ROI calculator

Tesla Supercharger for Business ROI calculator

Local electricity rates matter just as much on the cost side. Markets like California carry some of the highest commercial electricity rates in the country, which eats into the margin between what a host pays per kWh and what they charge drivers. At the same time, dense urban areas with high EV adoption tend to support higher retail charging prices, which can offset that cost if demand is strong enough. Weather also plays a role. Cold climates reduce battery efficiency and increase charging frequency, but they can also suppress utilization in winter months if drivers avoid stopping in exposed outdoor locations. Suburban and rural sites face a different problem: lower baseline EV traffic, which means a site with cheaper power and lower operating costs can still take longer to pay back simply because the stalls sit idle more often. Tesla’s calculator uses real fleet data to pre-fill utilization estimates by ZIP code, so businesses can run their specific address against these variables rather than relying on averages.

The program has seen real adoption. Wawa, already the largest host of Tesla Superchargers with over 2,100 stalls across 223 locations, opened its first fully owned and branded site in Alachua, Florida earlier this year. Francis Energy of Oklahoma and the city of Alpharetta, Georgia have also deployed branded stations through the program, as Teslarati covered in January.

Tesla now exceeds 80,000 Supercharger stalls worldwide, and the calculator makes the economic case for accelerating that number through private investment rather than company-owned sites alone.

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Tesla’s newest “Folding V4 Superchargers” are key to its most aggressive expansion yet

Tesla’s folding V4 Supercharger ships 33% more per truck, cuts deployment time and cost significantly.

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Tesla V4 Supercharger installation ramping in Europe

Tesla is rolling out a folding V4 Supercharger design, an engineering change that allows 33% more units to fit on a single delivery truck, cuts deployment time in half, and reduces overall installation cost by roughly 20%.

The folding mechanism addresses one of the least glamorous but most consequential bottlenecks in charging infrastructure: getting hardware from factory floor to job site efficiently. By collapsing the form factor for transit and unfolding into an operational configuration on arrival, the new design dramatically reduces the logistics overhead that has historically slowed Supercharger rollouts, particularly at large or remote sites where multiple units are needed simultaneously.

The timing aligns with a broader acceleration in Tesla’s network strategy. In March 2026, Tesla’s Gigafactory New York produced its final V3 Supercharger cabinet after more than seven years and 15,000 units, pivoting entirely to V4 cabinet production. The V4 cabinet itself is already a generational leap, delivering up to 500 kW per stall for passenger vehicles and up to 1.2 MW for the Tesla Semi, while supporting twice the stalls per cabinet at three times the power density of its predecessor. The folding transport innovation layers logistical efficiency on top of that technical foundation.

Tesla launches first ‘true’ East Coast V4 Supercharger: here’s what that means

Tesla Charging’s Director Max de Zegher, commenting on the V4 cabinet when it launched, captured the operational philosophy behind these changes: “Posts can peak up to 500kW for cars, but we need less than 1MW across 8 posts to deliver maximum power to cars 99% of the time.” The design philosophy has always been about maximizing real-world throughput, not just peak specs, and the folding transport upgrade extends that thinking into the supply chain itself.

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