The World's Largest Tesla Supercharger Station Is Entirely Off-Grid

This incredible 84-stall Tesla Supercharger location may have set a new benchmark for fully sustainable EV charging.

World's largest Tesla Supercharger

Photo by: Tesla

Suvrat Kothari

By: Suvrat Kothari

Jul 7, 2025 at 10:43am ET

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Tesla opened its largest Supercharger in the world ahead of the July 4 weekend.
It's located right off the Interstate 5 which connects San Francisco and Los Angeles—a major EV corridor.
Half of the 168 stalls are currently operational. The stalls that are online are completely off grid, powered only by solar.

Tesla may have missed the mark this year with the truly affordable electric vehicle it has long promised. But a charging station that’s beaming with solar panels, Megapacks and more stalls than any other Tesla Supercharger site on Earth is still a remarkable achievement.

The company just opened Project Oasis, a massive Supercharger station, in Lost Hills, California. It features 84 stalls that are currently operational and also fully solar-powered. Tesla claims the station isn't connected to the electrical grid at all.

Moreover, it's just getting started with the build-out. When all 168 Superchargers go online by the end of this year, it will officially be the world’s largest Tesla charging site and one of the clearest demonstrations yet of what a fossil-fuel-free charging station that’s not dependent on the electricity grid could look like.

World's largest Tesla Supercharger

Photo by: Tesla

While Tesla regularly touts new Supercharger openings on social media, this latest launch comes at a critical moment. The company opened the station just ahead of the July 4 weekend, coinciding with the Trump administration’s passage of the One Big Beautiful Bill, which eliminates incentives for clean energy programs, including electric vehicles and solar power, attempting to reverse all the progress done under the Biden administration.

Yet even after Tesla's widespread charging team layoffs in 2024, the company still keeps making progress in this space. And at this site, it takes full advantage of the sun-baked valley.

All canopies have solar panels on them and there's also a giant solar farm right next to the parking spots. Together, they generate 11 megawatts of energy. The electricity generated from that would be stored in 10 Megapacks—basically, large stationary lithium-ion batteries for energy storage.

The Megapacks have their own inverters and can also get over-the-air software updates. The combined storage capacity of the 10 Megapacks is about 39 megawatt-hours—each Megapack is 3.9 MWh. That much energy should comfortably enable hundreds of charging cycles daily, all harnessing the power of the sun to allow fully sustainable, zero-emission driving.

Although the 84 stalls currently open are all solar-powered, it’s unclear if all of the 168 dispensers, when open, will also be fully solar-powered. A member of the Tesla Owners of Silicon Valley posted on Instagram that the site has a small 1.5-megawatt grid connection, but that’s only a fraction of what the 11 megawatt solar farm that’s on site generates.

In theory, this site should remain operational even during power outages, thanks to its reliance on solar energy. Being off-grid may also offer a range of other advantages. Tesla said the station became operational just eight months after construction began. Its primary dependence on solar—rather than the local grid—may have also streamlined the permitting process.

That said, Tesla did thank local Kern County officials and utility provider Pacific Gas & Electric in the same thread, so some level of collaboration and permitting was clearly still involved. And bringing the site online and opening half the stalls to the public in just eight months is remarkably fast by industry standards. Charging executives have previously told InsideEVs that the process can often take years. (Although California is typically faster than most U.S. states when it comes to approvals.)

World's largest Tesla Supercharger

Photo by: Tesla

The Barstow Supercharger with 120 stalls is the largest Supercharger in the U.S. currently operational and will soon be eclipsed with the Lost Hills site. It’s also worth noting that the new site has around a dozen pull-through stalls, meaning if you’re towing a trailer, you won’t have to detach it to plug your EV in.

This new addition strengthens Tesla’s already vast and growing Supercharger network. According to the Alternative Fuels Data Center, Tesla has almost 2,700 Supercharger locations in the U.S. with nearly 32,000 stalls. Last year's firing—and subsequent rehiring—of the Supercharger team hinted the automaker might be easing off on rapid expansion. CEO Elon Musk himself has suggested the rollout could slow down.

Still, Tesla seems to be pushing forward on charging, and that’s crucial for broader EV adoption. Range anxiety and charging fears remain major hurdles for many buyers. But if Tesla continues to deploy more of such Supercharger mega sites nationwide, those concerns should naturally go away.

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Correction: This story mistakenly said Harris Ranch was the previous largest Supercharger location. That's actually the charging station in Barstow, California. We regret the error.

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