Update: Added that Tesla also has a VPP program in Massachusetts.
Participants in Tesla’s Virtual Power Plant (VPP) program in California have gradually been on the rise, and a new update from one resident of San Diego shows that the company is already nearing 250 homes in the city.
Tesla has reached 244 homes in San Diego through its VPP program, as shown in a screenshot of the Tesla app posted by one person who was recently accepted into the program (via Sawyer Merritt). The screenshot shared by X user Kromek6 shows 244 fleet homes in the area, and the user went on to thank Tesla and San Diego Gas and Electric for accepting his application.
Those in California with a Tesla Powerwall and solar panels can apply to be a part of the VPP through the Tesla app. As participants, users get paid to supply backup power to the electrical grid during times of peak electricity use, and Tesla and the associated utility companies are currently doing so through scheduled grid events.
According to the estimated tracker LastBulb, the entirety of California reached around 7,727 VPP participants as of late July, mostly made up of residents of the northern part of the state through Pacific Gas and Electric (PG&E).
At the time, there were 5,681 in Tesla’s VPP program signed up through PG&E, while the other 2,046 were signed up through SoCal Edison. San Diego only announced plans to launch Tesla’s VPP program in August, so the 244 participants have joined since then.
Credit: LastBulb (Chart from Flourish)
The tracker also shows months when scheduled grid events have taken place, and while it shows events took place last August and September, the only month this year to display scheduled events was July.
As of January, the VPP had already reached around 5,700 homes in California, and with San Diego residents jumping on board so quickly, the current number of participants is likely to jump significantly by the end of this year.
In addition to California, a VPP program is also being piloted in Texas through the company’s recently registered utility project, Tesla Electric. Another VPP program is active in Massachusetts with as many as 1,064 homes involved, as one reader told Teslarati in an email.
Tesla has also launched a VPP pilot program in South Australia, and the company is also planning to launch a few more in the coming years.
Tesla Energy working to launch virtual power plant in Puerto Rico
What are your thoughts? Let me know at zach@teslarati.com, find me on X at @zacharyvisconti, or send your tips to us at tips@teslarati.com.
News
SpaceX calls off Starship 10 flight attempt once again
SpaceX is calling off a potential launch of Starship this evening, marking the second consecutive night the tenth test flight of the massive rocket will be delayed.

SpaceX is calling off a potential launch of Starship this evening, marking the second consecutive night the tenth test flight of the massive rocket will be delayed.
Originally planning to launch on Sunday at 6:30 p.m. local time in Starbase, Texas, SpaceX was forced to delay the tenth launch of Starship due to a hardware issue.
“Ground side liquid oxygen leak needs to be fixed. Aiming for another launch attempt tomorrow,” CEO Elon Musk posted on the social media platform X.
Starship Flight 10 rescheduled as SpaceX targets Monday launch
The launch was then pushed to Monday night, and the launch window was set to start at the same time as Sunday. However, SpaceX would push it back to 6:44 p.m. due to some weather issues.
Eventually, Starship seemed like it was trending toward a launch, but weather continued to persist in the area, with thunder, rain, and lightning all threatening in the area.
At around 7:03 p.m., SpaceX decided to stand down once again, confirming weather was the culprit of yet another delay:
Launch called off for tonight due to anvil clouds over launch site (lightning risk)
— Elon Musk (@elonmusk) August 26, 2025
SpaceX will likely try again on Tuesday night, but the company has not yet confirmed if it will open another launch window.
News
WATCH: SpaceX Starship Flight 10 launch

SpaceX is set to launch its tenth test flight of the Starship program, with a launch window that will open at 6:44 p.m. local time, or 7:44 p.m. on the East Coast.
Starship’s tenth test flight was originally scheduled for launch yesterday with a one-hour window that opened at 7:30 p.m. ET, but it was called off 17 minutes before that window even had a chance to open.
Starship Flight 10 rescheduled as SpaceX targets Monday launch
SpaceX moved the flight to tonight. It was also originally scheduled to have a launch window at the same time as Sunday, but it was pushed back 14 minutes to around 6:30 p.m. ET. There are storms in the area, as well as clouds over Starbase, so there is the off chance for another launch delay.
There are several big objectives for this launch, including the expansion of the operating envelope for the Super Heavy booster. SpaceX says there are “multiple landing burn tests planned.”
The booster will also be performing a few in-flight experiments to help with data collection. Specifically, real-world performance data on future flight profiles and off-nominal scenarios will be on the list of things SpaceX will be looking for.
Starship itself will have a few in-flight objectives that include the deployment of eight Starlink simulators that are similar in size to the next-gen satellites for the internet service. SpaceX was set to test this with Starship’s seventh test flight, which occurred in January 2025. However, the task was abandoned as the vehicle was destroyed before deployment could occur.
Liftoff conditions are currently looking favorable, and SpaceX will be eager to improve upon its Starship launch program as CEO Elon Musk has big plans for it in the coming years.
You can watch the launch below via SpaceX:
Watch Starship’s tenth flight test → https://t.co/UIwbeGoo2B https://t.co/MQg9ZAjCip
— SpaceX (@SpaceX) August 25, 2025
Elon Musk
Tesla looks to expand Robotaxi geofence once again with testing in new area
It looks as if Tesla is preparing for its next expansion of the geofence, potentially moving toward a much larger service area that could eclipse 150 square miles.

Tesla looks to be preparing for the potential expansion of the Robotaxi geofence once again, as the company was spotted testing the suite in an area well outside of the Austin service area.
After it first launched the Robotaxi platform on June 22, Tesla has managed to expand its geofence twice, essentially doubling the travel area both times.
The most recent expansion took the size of the geofence from 42 square miles to about 80 square miles, bringing new neighborhoods and regions of the city into the realm of where the driverless vehicles could take passengers.
However, it looks as if Tesla is preparing for its next expansion of the geofence, potentially moving toward a much larger service area that could eclipse 150 square miles.
Over the weekend, one fan noticed a Robotaxi validation vehicle testing in Bee Cave, Texas, which is roughly 25 minutes from the edge of the current geofence:
Tesla spotted doing Robotaxi validation testing in Bee Cave, Texas, about 15 miles west of Austin (20-25 minute drive from current edge of geofence). pic.twitter.com/JCOcoys8SJ
— Sawyer Merritt (@SawyerMerritt) August 23, 2025
Tesla has been testing vehicles in the western suburbs of Austin for some time, and it seems the company is laying some groundwork to push its geofence expansion into Plaid Mode as competition with Waymo continues to be at the forefront of the conversation.
Waymo has been expanding with Tesla for some time, as the pace of expansion for the two companies has been relatively accelerated for the past couple of months.
Tesla’s expansions of the geofence sent a clear message to competitors and doubters, but it is still aiming to keep things safe and not push the envelope too quickly.
The geofence expansion is impressive, but Tesla is also focusing on expanding its vehicle fleet in both Austin and the Bay Area, where it launched a ride-hailing service in July.
Tesla Bay Area autonomous fleet to grow to over 100 units: Elon Musk
Still, safety is the priority at the current time.
“We are being very cautious. We do not want to take any chances, so we are going to go cautiously. But the service areas and the number of vehicles in operation will increase at a hyper-exponential rate,” CEO Elon Musk said during the Q2 Earnings Call.
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