Monarch Tractor, once valued at about half a billion dollars and celebrated for its all-electric, driver-optional “robotractors,” shut its California headquarters, laid off staff, and sold its technology after customer complaints and manufacturing setbacks. Vi
Two years ago, Monarch Tractor was being pitched as a breakthrough for California wine country. The company’s bet was audacious: battery-powered tractors—driver optional and designed to fit the narrow lanes between grapevines—would use cameras and sensors to learn what works. then share that knowledge across thousands of machines.
In April, the company moved to close the chapter. It shut its headquarters, laid off its employees, and sold its technology to a competitor.
The mission was clear from the start. Monarch’s tractors were intended to make it easier and cheaper to handle pests, irrigation and harvesting. They were also meant to eliminate diesel. guided by hope that data collected in vineyards could be turned into practical improvements for growers. The company’s momentum looked unstoppable: Monarch made Time magazine’s list of the year’s best inventions in 2023. and later that year it appeared on a Forbes list of startups most likely to reach a $1-billion valuation. It had seemed on track until the technology met the reality of farms—and didn’t perform.
Customer complaints came early. Patrick O’Connor. who runs Moonvine Wines. an organic vineyard near the Sierra Foothills wine region. said the tractors too often went rogue—veering off straight paths and damaging his vines. In an Instagram video. O’Connor said. “It totally failed.” He added that he was excited to eliminate diesel. run on solar panels and embrace new technology. but “it just did not perform. It was actually quite dangerous.”.
For Monarch, the warnings were not theoretical. The company’s potentially world-changing system wasn’t working as designed. And just as it faced customer dissatisfaction. manufacturing trouble compounded the collapse: the tractor maker—including the same company that produces most iPhones—had to stop making the tractors. In April. Monarch said in a statement. “Building and scaling a new tractor platform in agriculture came with unforeseen challenges.” Monarch and its founders did not respond to requests for comment.
The story also carried a rare mix of pedigree and pressure. Monarch launched in 2018 with a founding team that included Tesla veteran Mark Schwager and Napa Valley wine scion Carlo Mondavi. the grandson of Napa legend Robert Mondavi. Chief Executive Praveen Penmetsa. who had worked for years in the automotive and EV industries largely in and around Los Angeles. told Forbes in 2023 that “Every farmer around the world is under tremendous pressure because of a lack of labor. ” and projected hundreds of millions of dollars in revenue. In that same interview. he said. “We are the only all-electric. smart. driver-optional tractor in the world that farmers can buy today.”.
The company’s failure landed in a California industry that has its own stressors. The Californian wine industry has been struggling with rising competition and dwindling demand. factors that could have pushed more farmers to test new ways of cutting costs—or. in turn. made growers more cautious about adopting expensive technology that hasn’t been proven.
Walter Duflock, vice president of innovation for the Western Growers Assn, argued Monarch aimed too high for the moment. Duflock. who owns San Bernardo Rancho. a fifth-generation family ranch in south Monterey County. said the company didn’t spend enough time focusing on farmers’ needs while trying to solve two problems at once. “The electric tractor has struggled to find a use case on the farm,” he said in an interview. “They never got to the point where their electric vehicle was solving a fundamental problem.”.
Charging infrastructure became another obstacle for growers. On Duflock’s ranch and many other California farms, he said there’s little to no charging infrastructure. Even if infrastructure exists. he said. charging would take too long for farms that can’t afford downtime during busy seasons. “The notion of sitting there waiting for a charging tractor to finish getting charged just doesn’t fit,” he said.
Duflock also said he heard the Monarch tractor “would bump into stuff, it would not stop fast enough,” and that “It just did not work.”
That experience—technology arriving before the practical conditions of adoption—kept surfacing as Monarch’s internal situation deteriorated. The company’s collapse was gradual, not sudden. In July 2024. Monarch laid off 15% of its workforce. followed by another round of layoffs in November 2024 that affected around 35 employees. or 10% of its workforce. A year later. the company warned employees it could lay off 100 workers or even “shut down. ” in a company-wide memo obtained by TechCrunch.
By November 2025, the legal pressure became explicit. Monarch Tractor was sued by the Idaho-based dealership Burks Tractor. Burks Tractor accused Monarch of misrepresenting its autonomous technology. Burks paid Monarch more than $770,000 for 10 tractors. The complaint said. “Upon receiving the tractors. Burks Tractor discovered that the tractors did not perform as represented and were unable to operate autonomously.” A Burks Tractor manager declined to comment due to the ongoing litigation.
Monarch’s manufacturing path also unraveled. The company’s vehicles were supposed to be manufactured at a facility in Ohio owned by Foxconn. a Taiwanese electronics company known for assembling iPhones. Foxconn sold the factory in August 2025, shutting down Monarch’s plans there. In April. Monarch sold the technology it had spent hundreds of millions of dollars developing to Caterpillar. for an undisclosed amount.
In a LinkedIn post at the time, Monarch said, “It means the technology will continue to move forward,” with another company. “Thank you to our employees, investors and customers for being a part of this journey.” Caterpillar did not respond to requests for comment.
Not all autonomous farming efforts are stalling. Farm equipment company John Deere has had more success marketing and selling autonomous farm equipment. taking a different approach by gradually incorporating autonomy into existing products. Deere’s 8R tractor can operate autonomously while being controlled by a smartphone. and it has been deployed at large-scale commodity farms growing corn. soy and wheat.
Even as Monarch exited, some users adapted rather than abandoned the hardware. O’Connor said he still uses his Monarch tractor, but only as a battery-powered machine and to cut wood with an attachment he added.
For the vineyards and ranches that tried to make Monarch’s promises work in the real rhythms of farming. the ending was blunt. In the end. the driver-optional. electric. sensor-driven system that was supposed to reshape grape cultivation never delivered the reliability growers needed—leaving Monarch’s shutdown to feel less like an innovation detour. and more like a cautionary tale written in damaged vines. unanswered questions. and a company that ran out of time.
Monarch Tractor robotractors wine industry Livermore Livermore headquarters Praveen Penmetsa Patrick O’Connor Moonvine Wines Walter Duflock Burks Tractor lawsuit Caterpillar Foxconn John Deere 8R autonomous farming electric tractors