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Tesla Solar + Powerwall more than covers monthly payment after a week of VPP events

Credit: Mark Gillund

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Tesla owner Mark Gillund of Sacramento, California, will not be paying out of pocket for his solar and battery system’s monthly payment this month. This was because his home is part of Tesla’s California Virtual Power Plant (VPP), which has been providing backup power to the grid as the state continues to deal with challenges brought about by the recent heatwave. 

Mark Gillund placed his order for a Tesla Solar + Powerwall system in June last year. By the second week of August 2021, his solar panels and batteries were installed, though the homeowner had to wait until early September 2021 before the system was actually turned on. The setup was quite impressive, with its 12.24 kWh solar array, three Tesla Powerwall batteries, and two inverters. This, Gillund believed, would be a good way to reduce his home’s typical power bill, which hits about $650 per month during summer. 

The benefits of the solar panels and Powerwall batteries were immediately evident, with the Tesla owner noting that his home’s power charges dropped to just the $10 minimum every month. Thus, when Tesla launched its California Virtual Power Plant, the Powerwall owner promptly opted in. With the rollout of the program’s $2 per kWh incentive, joining the California VPP made even more sense. 

With California dealing with a serious heatwave, the state’s grid has seen its own fair share of challenges as of late. Tesla’s California Virtual Power Plant promptly went to work, providing the grid with backup renewable energy as needed. Lastbulb’s VPP tracker suggests that there are now over 4,600 homes that are participating in the California Virtual Power Plant, and so far, the system has provided about 577 MWh of energy to the state’s grid. 

Gillund’s Tesla Solar + Powerwall system participated in the recent VPP events, sending 35 kWh back to the grid during the September 9 event alone. Overall, the homeowner’s solar and battery system had sent a total of 255 kWh during the ongoing heat wave. This meant that the system had been able to earn $510 in compensation with just a week’s worth of VPP events. This was more than enough to cover the monthly payment of Gillund’s entire solar and battery system. 

As mentioned by Gillund to Teslarati, the monthly fee for his Powerwall and solar loan is $400. This meant that as long as his home sends over 200 kWh of power to the grid, the system could effectively pay for itself. In a way, this is pretty much the cherry on top for the homeowner, as his Powerwall and solar system had actually been cash positive so far. 

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Gillund was fortunate enough to receive a $14,000 tax credit for his solar and batteries, so he’s still paying for the system’s monthly fees with that amount. The earnings of the system through his home’s participation in the California Virtual Power Plant could then be considered an extremely welcome extra. It could also be proof that Tesla CEO Elon Musk was really onto something when he noted that renewable energy solutions could effectively become a money printer of sorts. 

Check out Gillund’s insights on the CA VPP in the video below. 

Don’t hesitate to contact us with news tips. Just send a message to simon@teslarati.com to give us a heads up.

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 teases TSMC as potential Terafab partner

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SpaceX Terafab rendering
SpaceX Terafab rendering

Elon Musk has acknowledged that early discussions with Taiwan Semiconductor Manufacturing Company (TSMC) could bring the company into his ambitious Terafab semiconductor project, signaling a possible partnership with the world’s leading contract chipmaker.

Musk confirmed that early talks are underway, but as of right now, they are “just discussions.” There is no confirmation of a deal nor dismissal of the possibility of one, leaving open the prospect of one of the largest advanced-chip collaborations under discussion in the U.S.

The report that speculated on potential discussions between Terafab and TSMC comes from Tim Culpan, who outlined a few ways the collaboration could operate. One is TSMC using the project as an “anchor customer” for future facilities in Texas, potentially contributing process expertise, operational know-how, or capacity while Terafab provides capital, long-term purchase commitments, or both.

Tesla and SpaceX jointly developed the Terafab project, with Intel already participating on the tech side. Elon Musk announced the project in March, and it intends to produce more than one terawatt of AI compute capacity annually once fully built.

Elon Musk’s Terafab project locks up massive new partner

Company statements place the first phase at approximately $16.8 billion in cost, with later filings pointing to a total that could reach well into the tens of billions across multiple stages.

Intel joined the effort in April 2026 and is expected to supply its 14A manufacturing process for the full-scale plant.

Musk has said existing suppliers, including Samsung and TSMC, remain important for near-term needs; Tesla already has production arrangements with Samsung for AI5 and AI6 chips, but that future demand from Optimus robots, Cybercab vehicles, and planned space-based data centers will eventually exceed what the global industry can currently deliver.

Terafab is positioned as the long-term answer to that projected shortfall, and Tesla did something similar during COVID to avoid a chip shortage. This is just a much larger-scale solution.

If the partnership were to materialize, it would add TSMC’s industry-leading strategies to a project that already combines Tesla’s and SpaceX’s capital and offtake with Intel’s process technology. For now, the only public confirmation is Musk’s brief acknowledgement that conversations are occurring.

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Tesla reveals early Robotaxi charging strategy, showing scrappy DNA

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Credit: Tesla

Tesla’s early strategy for charging units operating within its Robotaxi fleet reveals that the company surely has not lost any of that scrappy DNA that took it from an unlikely success story to the most valuable carmaker in the world.

An observer at a Tesla Supercharger in Austin spotted ten total Robotaxi vehicles arrive: one Cybercab and nine Model Y units. A Tesla employee was waiting at the lot and allowed each unit to park itself; every car that arrived had nobody in it.

Tesla wins FCC approval for wireless Cybercab charging system

The Tesla employee would walk around and plug each car in, adjusting the parking if needed:

It’s a very interesting strategy, but extremely understandable at this early point in the Robotaxi program. It’s only been out for about 15 months, and Cybercab just entered the fleet in early September.

On top of that, Tesla is still working tirelessly on its wireless charging apparatus, and a new patent was just published regarding that product last week.

However, this is just another example of how Tesla still has plenty of that scrappy DNA leftover from the “production hell” days, when CEO Elon Musk slept on the floor of the factory, employees were working crazy hours, Tesla was building Sprung Structures to build cars in, and the company was tiptoeing on the brink of bankruptcy.

For now, Tesla is utilizing a simple system for recharging its ride-hailing vehicles, and that is a Tesla employee doing it manually until another solution presents itself. Sure, it’s not the most high-tech thing, and it certainly is not what people might have expected at this point in time, but it works, and it’s keeping the entire suite running.

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Tesla Robotaxi expands hours, Musk explains why it’s been a challenge

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Credit: Tesla

Tesla is expanding its Robotaxi service hours by pushing the time back by one hour, keeping the ride-hailing service operational until 11 p.m., one hour later than previously.

CEO Elon Musk confirmed the change and offered a specific reason the expansion has been gradual: the system still needs to reliably avoid small pets that are difficult to see after dark, as they commonly blend into the color of the road, especially when they’re grey.

The latest adjustment restores only a fraction of the operating window the service once held. When paid Robotaxi rides began in Austin on June 22, 2025, vehicles ran from 6 a.m. to midnight.

Tesla Robotaxi will be a 24/7 service: here’s when

In September 2025, Tesla lengthened the day to a 2 a.m. close, producing a 20-hour window that stayed in place for most of the following year. By early August of this year, the cutoff had already been pulled back; an August 26 update formalized hours of 6 a.m. to 10 p.m. across Austin and several other markets.

The October move to 11 p.m. therefore leaves the Austin day one hour shorter than the original launch schedule and three hours shorter than the 2025 peak.

Musk addressed the constraint directly after the announcement. “The main thing we’re trying to solve is making sure that we don’t run over pets when they’re hard to see at night,” he wrote. “Literally trying to avoid grey kittens on grey tarmac in the dark.”

The example points to a low-contrast perception problem in which a small animal can blend into the road surface under limited lighting.

Tesla’s vehicles rely on cameras and neural-network processing rather than lidar; Musk has previously argued that advanced vision software can extract useful information even in low light by analyzing photon counts, but the pet-detection case remains the stated limiter in later hours.

The modest schedule change arrives alongside faster growth in the purpose-built Cybercab fleet. Texas registration data tracked by observers showed the Austin Cybercab count rising sharply in recent weeks, reaching 169 vehicles after more than 100 were added in a short span.

Tesla has indicated that a broader shift toward 24-hour operation is tied to the upcoming FSD v15 software release expected this month on Robotaxi vehicles. Until that capability is validated for the edge cases Musk described, the company continues to add service time incrementally rather than jumping straight to overnight coverage.

The one-hour extension gives Austin riders a later option for evening trips while the underlying detection work continues.

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