Tesla’s AI and robotics divisions are facing a significant “brain drain” as a stealth startup called Sunday Robotics emerges with a roster of engineers from Tesla’s Optimus and Autopilot teams.

We are used to seeing Tesla executives leave, especially to other AI giants, as the competition ramps up and large compensation packages are being thrown around left and right.

However, this feels different. Sunday Robotics isn’t a Fortune 500 company poaching Tesla engineers with big packages. It is a tiny startup that just came out of stealth with a funding round that would be a rounding error in Tesla’s financials.

Sunday Robotics officially emerged from stealth today, announcing $35 million in funding led by Benchmark and Conviction.

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The startup, founded by Stanford roboticists Tony Zhao and Cheng Chi (Zhao previously interned at Tesla Autopilot), has recruited an impressive bunch of senior Tesla engineering leadership.  

The list of departures includes:

• Nishant Desai: an almost 5-year veteran at Tesla’s machine learning team working on Autopilot and FSD.
• Nadeesha Amarasinghe: The former Engineering Lead for AI Infrastructure at Tesla. He was responsible for the massive backend systems that train FSD and Optimus. He was at Tesla for moer than 7 years.
• Perry Jia: A key engineer on the Optimus and Autopilot programs. He spent almost 6 years at Tesla and led the data engine programs. Now, he leads Data Operations at Sunday.

This isn’t just random attrition. Sunday Robotics has effectively poached a “full stack” of robotic and AI engineers from Tesla.

They also recruited other employees from Tesla, and it wouldn’t be surprising to see more join, as Jason Peterson, a talent recruiter for Tesla’s Optimus and Robotaxi programs, confirmed that he also left Tesla in September to join Sunday.

What is Sunday Robotics?

So, what are these engineers leaving Tesla to build?

Sunday Robotics is taking a different path than Tesla’s general-purpose humanoid. Their debut robot, Memo, is a wheeled domestic robot designed for household chores such as cleaning dishes and folding laundry.  

By ditching the legs (Optimus is bipedal), Sunday claims they can focus entirely on dexterity and reliability. The robot is trained on a massive dataset of 10 million behavioral episodes, which the company claims gives it a “ChatGPT moment” for physical movement.  

The most interesting technical divergence from Tesla is how Sunday collects data.

Tesla relies heavily on VR teleoperation suits to train Optimus. Operators wear motion-capture suits and mimic tasks in a lab. It’s high-fidelity, but it’s slow and expensive. Tesla now claims to also train just on video.

Sunday Robotics has a different approach this with a $200 ‘Skill Capture Glove’. They distributed these gloves to hundreds of ordinary people (“Memory Developers”) who recorded themselves doing chores in their own messy homes.  

This allowed Sunday to crowdsource 10 million episodes of real-world data, messy kitchens, weird lighting, and cats jumping on counters at a fraction of the cost of Tesla’s teleoperation labs.

The gloves also reflect Memo’s much less complicated hands, which can make them more reliable and cheaper.

Electrek’s Take

Elon Musk is telling anyone willing to listen that Tesla is ahead of the competition when it comes to “real-world AI” and robotics.

He claims that Tesla will start producing Optimus robots in the millions of units starting next year and it will eventually “end poverty.”

Not many people who are serious about robotics take these claims seriously.

Many other companies are developing humanoid robots, and Tesla shows no evidence of being ahead of the pack, while there are still many obstacles to make them useful at scale.

A company like Sunday has a less ambitious but more realistic approach that could pay off, and it is convincing some Tesla engineers to jump ship.

Cordelio Power’s 135 MW Crossover Wind farm is officially up and running in Cross County, Arkansas, west of Memphis, Tennessee. It is now officially the first operating wind farm in Arkansas.

“We are proud to announce that Crossover Wind is now generating electricity as the first utility-scale wind project in the state of Arkansas,” said Nick Karambelas, Cordelio Power’s chief development officer.

The project will deliver 100% of its power to Microsoft under a 20-year power purchase agreement. Independent power producer Cordelio says Crossover will pay about $950,000 a year to Cross County and more than $50 million to local landowners over the project’s lifetime without disrupting farming practices.

“We’re especially thankful for the strong collaboration from Cross County officials, landowners, and the broader community, which has been instrumental in bringing this project to life,” Karambelas added.

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M.A. Mortenson handled the construction, and Vestas supplied 32 US-made V-163 4.5 MW turbines. Vestas will also handle long-term operations and maintenance.

Cordelio acquired the project in late 2023 from Steelhead Americas, Vestas’ North American development arm, which started development in 2020.

Read more: Solar and wind are covering all new power demand in 2025

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We’re kicking off this week’s Green Deals with a continued Black Friday extravaganza – with this issue containing a mix of single-focus deals and massive roundups. Our headliner comes as part of Anker’s SOLIX Black Friday Sale, with the brand launching a 4-day flash sale on a small selection of power stations, including the latest SOLIX C2000 Gen 2 Portable Power Station at a new $679 low. Right behind that, we have a nice array of Mammotion RTK Robot Lawn Mowers at some of their lowest prices at Amazon and Wellbots starting from $649, as well as Anker’s popular PowerCore Reserve 60,000mAh/192Wh Portable Power Station at $80. There’s also EV charging lows from Schumacher, a massive Greenworks Black Friday roundup, Best Buy’s collection of daily deals, and much more waiting for you below. And don’t forget about the hangover deals from last week that are collected together at the bottom of the page in our latest edition of Electrified Weekly.

Head below for other New Green Deals we’ve found today and, of course, Electrek’s best EV buying and leasing deals. Also, check out the new Electrek Tesla Shop for the best deals on Tesla accessories.

Anker’s 4-day SOLIX Black Friday flash sale drops latest C2000 gen 2 power station to new $679 low ($820 off)

As part of its expanded Black Friday Sale, Anker SOLIX is offering 4-day flash savings on four different bundles, three of which are keeping the same low prices while switching up the FREE gear you’ll be getting with them, while one is actually dropping costs lower than before. That latter deal mentioned is on Anker’s new SOLIX C2000 Gen 2 Portable Power Station for $679.15 shipped, which also matches in price at Amazon. It’s been carrying a $1,499 price tag since launching at the end of October, with the discounts we’ve seen in its short time on the market having dropped costs to $799 and $749, until the brand’s Black Friday event first brought things lower to $699. Now, you can score it at an even better price, with $820 cut from the tag for a new all-time low rate. Head below for more on this unit and the others benefiting from this flash sale.

Not only does Anker’s SOLIX C2000 Gen 2 power station come as an upgrade from the legacy F2000 unit, but right now it’s even beating out that older model’s price by $120, making this deal all the better. This new model comes more compact and lighter than before with a starting 2,048Wh LiFePO4 battery capacity that can expand up to 4,096Wh with an expansion battery (which you can find bundled on the station’s landing page). There are 11 ports to choose from for your needs (5x AC, 3x USB-C, and solo TT-30R, USB-A, and car ports), with it providing 2,400W to 4,000W of max output when surging.

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There are six main ways to recharge its own battery, with an AC outlet or a gas generator putting it at 100% in 88 minutes, while utilizing its max 800W solar input gets you there in up to three hours. You can also use both AC and solar charging at the same time to hit 100% in up to 58 minutes, or if you’re driving, either use your car’s auxiliary port for up to 23 hours or the new 800W alternator charger for faster speeds.

Anker’s SOLIX Black Friday 4-Day flash sale offers:

• SOLIX C2000 Gen 2 Portable Power Station: $679 (Reg. $1,499)
• F3000 (3,072Wh) power station: $1,199 (Reg. $2,599)
  • comes with FREE 120V generator input adapter
• F3800 Plus (7,680Wh) with expansion battery: $3,199 (Reg. $7,298)
  • comes with FREE 200W solar panel
• F3800 Plus (7,680Wh) with expansion battery and SHPK: $4,299 (Reg. $8,897)
  • comes with FREE 400W solar panel

As I mentioned, there’s the massive lineup of Anker SOLIX Black Friday deals that you can view here, with increased savings up to 70% off, free gifts, and more starting from $150.

Upgrade your lawn care with up to 35% Black Friday savings on Mammotion RTK robot mowers from $649

During Amazon’s Black Friday Sale event, the official Mammotion storefront is offering up to 35% savings across various models of its robot lawn mowers, with prices starting lowest on the YUKA Mini 500H Robotic Lawn Mower at $649 shipped. You’d have to shell out $999 for this model at full price, which discounts have previously dropped to this same low rate twice before, while others kept costs higher at $779 or more. Picking one up here not only automates your lawn care routine, but you’ll be doing so with $350 cut from the tag at the lowest price we have tracked. Head below for all the other Mammotion robot models we’re seeing discounted for the holidays.

If you want to learn more about this model or browse the full lineup of offers we’ve collected from Amazon and Wellbots, be sure to check out our original coverage of these deals here.

Anker’s popular PowerCore Reserve 192Wh power station with a pop-up light drops to $80 for Black Friday (Save $70)

As part of the ongoing Amazon Black Friday Sale, Anker’s official storefront is offering its popular PowerCore Reserve 60,000mAh Portable Power Station back at $79.98 shipped in both colorways, which matches the price we’re seeing directly from the brand’s website. Fetching $150 at full price and regularly seeing Prime exclusive discounts to $110, it’s during major events like Black Friday (as well as random windows throughout other months) that we often see it dip below $100 to either $90 or $80, with there having been a once-off drop to the $75 low back in July that hasn’t been seen since. You’re getting the opportunity to score it at the next-best price this holiday season, cutting $70 off the going rate and giving you quite the portable means to keep personal devices up and running.

If you want to learn more about this compact backup power solution, be sure to check out our original coverage of this deal here.

Best Fall EV deals!

• Velotric Nomad 2X e-bike (camo) with DELTA 3 Plus station: $3,048 (Reg. $3,298)
• Velotric Nomad 2X e-bike (sage or fig) with DELTA 3 Plus station: $2,948 (Reg. $3,298)
• Velotric Nomad 2X Multi-Terrain Full Suspension e-bike w/ $96 bundle: $2,299 (Reg. $2,399)
• Heybike Hero 750W Mid-Drive Carbon-Fiber All-Terrain e-bike: $2,299 (Reg. $3,099)
• Rad Power Radster Road Commuter e-bike: $1,999 (Reg. $2,199)
• Rad Power Radster Trail Off-Road e-bike: $1,999 (Reg. $2,199)
• Lectric XPedition 2.0 35Ah Cargo e-bike w/ $893 bundle: $1,999 (Reg. $2,761)
• Ride1Up TrailRush German Mid-Drive e-bike (first discount): $1,995 (Reg. $2,095)
• Heybike Hero 1,000W Carbon-Fiber All-Terrain e-bike: $1,899 (Reg. $2,599)
• Tenways Wayfarer e-bike with $277 bundle (launch deal): $1,899 (Reg. $2,199)
• Velotric Fold 1 Plus e-bike (gray or white) with DELTA 2 station: $1,898 (Reg. $2,198)
• Velotric Fold 1 Plus e-bike (mango or blue) with DELTA 2 station: $1,828 (Reg. $2,198)
• Velotric Summit 1 Versatile Multi-Terrain e-bike with $160 bundle: $1,799 (Reg. $1,999)
• Aventon Aventure 3 Smart All-Terrain e-bike (first discount): $1,799 (Reg. $1,999)
• Aventon Aventure 3 Smart Step-Through All-Terrain e-bike (first discount): $1,799 (Reg. $1,999)
• Lectric XP Trike2 750 Long-Range eTrike with $558 bundle: $1,799 (Reg. $2,357)
• Rad Power RadExpand 5 Plus Folding e-bike (lowest price): $1,699 (Reg. $1,899)
• Lectric XPedition 2.0 26Ah Cargo e-bike w/ $744 bundle: $1,799 (Reg. $2,543)
• Aventon Level 3 Step-Over Smart Commuter e-bike (first discount): $1,699 (Reg. $1,899)
• Aventon Level 3 Step-Through Smart Commuter e-bike (first discount): $1,699 (Reg. $1,899)
• Lectric XPeak 2.0 Long-Range Off-Road e-bike with $583 bundle: $1,699 (Reg. $2,282)
• Rad Power RadWagon 4 Cargo e-bike with extra battery: $1,599 (Reg. $1,799)
• Aventon Abound Cargo e-bike: $1,599 (Reg. $1,999)
• Ride1Up VORSA Modular Multi-Use e-bike: $1,595 (Reg. $1,695)
• Rad Power RadRunner Cargo Utility e-bike with extra battery: $1,499 (No pirce cut)
• Lectric XPeak 2.0 Standard Off-Road e-bike with $434 bundle: $1,499 (Reg. $1,933)
• Lectric XP Trike2 with $257 bundle: $1,499 (Reg. $1,756)
• Rad Power RadWagon 4 Cargo e-bike: $1,499 (Reg. $1,799)
• Aventon Aventure 2 All-Terrain e-bike: $1,499 (Reg. $1,999)
• Lectric XPedition 2.0 13Ah Cargo e-bike with $346 bundle: $1,399 (Reg. $1,745)
• Aventon Level 2 Commuter e-bike: $1,499 (Reg. $1,899)
• Rad Power RadRover 6 Plus Step-Thru Fat Tire e-bike: $1,399 (Reg. $1,599)
• Heybike ALPHA All-Terrain e-bike with $266 bundle: $1,299 (Reg. $1,699)
• Lectric XPress 750 Commuter e-bikes with $439 bundle: $1,299 (Reg. $1,703)
• Lectric XP4 750 LR Folding Utility e-bikes with up to $514 bundle: $1,299 (Reg. $1,813)
• Heybike Hauler Dual-Battery Cargo e-bike (new low): $1,299 (Reg. $1,899)
• Rad Power RadWagon 4 Cargo e-bike: $1,299 (Reg. $1,799)
• Heybike Mars 2.0 Folding Fat-Tire e-bike with extra battery: $1,199 (Reg. $1,848)
• Lectric XP Lite 2.0 JW Black LR e-bike with $449 bundle: $1,099 (Reg. $1,548)
• Heybike Hauler Dual-Battery Cargo e-bike with $89+ bundle: $1,099 (Reg. $1,413)
• Lectric XP4 Standard Folding Utility e-bikes with $326 bundle: $999 (Reg. $1,325)
• Lectric XP Lite 2.0 Long-Range e-bikes with $449 bundles: $999 (Reg. $1,448)
• Heybike Mars 2.0 Folding Fat-Tire e-bike with Black Friday gift: $999 (Reg. $1,499)
• Heybike Ranger S Folding Fat-Tire e-bike with Black Friday gift: $999 (Reg. $1,499)

Best new Green Deals landing this week

The savings this week are also continuing to a collection of other markdowns. To the same tune as the offers above, these all help you take a more energy-conscious approach to your routine. Winter means you can lock in even better off-season price cuts on electric tools for the lawn while saving on EVs and tons of other gear.