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Musk and Straubel talk about the Model 3 ramp and solar power
At the press conference held in the lobby of the Gigafactory on Wednesday evening, Elon Musk and JB Straubel told the press a great deal about the upcoming Model 3 and the company’s new focus on solar power.
On The Model 3
Musk: “I believe we are on track to meet the half million by 2018. The hardest thing to predict is really the ramp. The ramp looks like an S curve and grows exponentially. Initially the ramp looks really tiny and as you eliminate bottle necks you climb the ramp and you level off. Its always difficult for us to forecast the exact shape of the S curve for the production ramp.
“It’s much easier for us to forecast when things are going to be steady state. So we’ve been pretty good about forecasting 2018, whereas 2017 is much more in the air because we’ll be working through a complex production ramp.”
Straubel: “One of the points is the schedule and ramp up plan for the Gigafactory. With the pull up of the Model 3, and the volume goal to meet a half million cars by 2018, we also have had to pull up the Gigafactory schedule to supply the cells and battery packs for the Model 3.
“What that means is for the earlier schedule for the Gigafactory, we’ve had to pull that ahead by two years. By 2018 we have to be at 35 gigawatt hours of production to support those Model 3s. You can see the evidence of that around the factory. And Panasonic has done their part to absolutely stay in sync with that as we’ve accelerated the schedule for Model 3.”
On The Size Of The Gigafactory
Musk: “What you’re seeing is only 14% of the size of the factory overall. It’s quite huge. One of the things we discovered as we got more into the Gigafactory design and optimizing what it could do, we thought we could probably achieve about three times the output that was originally planned.
“So we originally expected to make about 35 gigawatt hours at the cell level and about 50 gigawatt hours at the module or pack level. Now we are expecting to do about 150 gigawatt hours in the same volumetric space as the original design. We can expect to see 10,000 [workers], compared to the 5,000 or 6,000 previous estimate. Maybe in three to four years.
“Things are on track to be able to meet the Model 3 plan next year. We’re really excited about what’s happening here.”
Powerwall and Powerpack business
Musk: “Stationary storage will be as big as the car business long term. The growth rate will probably be several times what it is for the car business. We roughly assume that it’ll be probably a third of our output. But the growth rate is faster, so then grow to probably match what it is for cars.
Solar Power And The Utility Grids
A battle is being waged between alternative power solutions and traditional utility companies. SolarCity has recently shut down operations in Nevada, putting 500 people out of work because policies instituted by the Nevada PUC the company feels are unfavorable to rooftop solar. At the press conference Wednesday, Musk made several remarks about the solar power industry and traditional power generation. He was careful to acknowledge alternative energy can cause strains for traditional utilities and grid operators.
Musk: “Solar power production actually helps the grid to a certain point. Only past a certain point does it create issues with the grid. A utility can handle up to 20% of production from solar and that helps the grid because it produces electricity when needed. Solar power peaks in the middle of the day and that’s also when air conditioning is running and businesses are operating, so power production matches usage.
“But once you exceed the 20% level, then it does become more difficult for utilities to power balance the grid. So I think it makes sense for net metering to be there up through the point where it helps the cost structure of the grid. That’s the logical thing. The utilities in some cases have tried to obfuscate that its actually helpful, and have tried to lower that number of 20% to like 3%.
Tesla And Grid Services
Musk: “I think we’ll get into grid services eventually. The goal of Tesla is to accelerate sustainable energy, so we’re going to take a step back and think about what’s most likely to achieve that goal.
Autopilot
Sandwiched into the discussion was a question about whether Musk has any regrets about how Tesla introduced its Autopilot system, especially after Consumer Reports issued a call for the company to disable the Autosteer function recently.
Musk: “No, I think we did the right thing. I think we improved people’s safety, not just in fatalities but also injuries. We can see how it actually reduces impact velocity. It can reduce impact from 76 miles per hour to 46 miles an hour. That’s massive.
“We polled Tesla owners, do you want autopilot disabled or not. Not one person wanted it disabled. That’s pretty telling.”
Source and photo credit: Fortune
Although the two vehicles are built for completely different use cases, Tesla utilized engineering expertise while developing both the Cybercab and Semi to build a thermal architecture that would fit both vehicles. Of course, with some slight revisions.
The development was noted by Lars Moravy and Dan Priestley last week at Tesla’s Semi Handover event in Sparks, Nevada, where the company showed off its dedicated production facility for the Class 8 truck.
🚨 Tesla designed the integrated thermal systems for Cybercab and Semi at the same time as the vehicles were both in development
Tesla wanted to build one thermal system that worked with both vehicles, apart from small modifications.
Semi and Cybercab share parts 🤯 pic.twitter.com/KmzSsUbrcg
— TESLARATI (@Teslarati) September 25, 2026
Tesla’s decision to develop one thermal architecture for both the Cybercab and Semi is one of the more revealing engineering choices in the company’s 2026 lineup:
“We designed it at the same time we designed the Cybercab and we said okay we’re going to take our most efficient vehicle and our biggest vehicle and we’re going to take one thermal system and make it work for both.”
Core parts, meaning the compressor, pumps, and heat exchangers, are shared, with only modest changes to cooling-loop sizing and a larger radiator on the truck. The result, they said, is a compressor and thermal stack already proven across millions of miles, delivering “reliability from day one.”
Priestley also highlighted a practical payoff of the indirect design:
“There’s no AC lines, there’s no refrigerant lines…It comes from the factory fully charged, sealed with refrigerant, and it just exchanges coolant. It doesn’t actually run refrigerant up to the front of the vehicle.”
This eliminates potentially leak-prone plumbing that would otherwise require hands-on service, reducing overall uptime and potentially cutting into business margins. The megamanifold runs cabin HVAC and every powertrain heating and cooling loop at once, recapturing waste heat from motors and the battery instead of dumping it the way a diesel engine does.
The approach is just the latest chapter in a continuing story of stretching thermal solutions across wildly different vehicles. Model Y’s Octovalve evolved into the Super Manifold used on Cybertruck, and later Model S/X refreshes. Cybercab then introduced Supermanifold V3, which Tesla says is 80 percent automated to build and 38 percent more efficient than typical automotive thermal systems.
This thermal system is also shared with Cybercab – one thermal system for both our most efficient vehicle & our biggest vehicle
— Tesla Semi (@tesla_semi) September 25, 2026
Tesla has done the same with the 4680 cells, both being utilized in the Cybertruck and Semi, and with heat-pump compressors that Priestley noted were already common across the passenger-car fleet.
Concurrent development of crucial vehicle elements buys scale and reliability that a truck-only thermal system could not match. High-volume passenger car parts are cheaper and more accessible, which can give fleets a sealed, low-maintenance loop of operation from their first day of operation.
For owners and operators, that translates into less energy spent on cabin heat in the colder months, fewer refrigerant-related repairs, and a thermal architecture already stress-tested at passenger-car volumes before the first high-volume Semi left the lines in Nevada.
Tesla CEO Elon Musk certainly tipped off some details of the Tesla Roadster event with a broadening of information regarding the company’s decision to delay the unveiling for two weeks.
For years, people have speculated about what the Roadster will be capable of. While there have been plenty of things said about what it *could* do, we have not seen or been told by Tesla what it will actually be capable of.
However, over the past few days, Tesla’s weather updates have truly pushed the speculation into Plaid Mode, basically all but confirming the car will have some sort of aerial capability — whether that would be hovering or fully flying remains to be seen — but it definitely seems that it will be able to leave the ground intentionally.
“Because this event can only be held outdoors…”
Tesla posted on Monday that it would delay the Roadster event until October 15, and it indicated that it had to do this because the event “can only be held outdoors.”
With the potential SpaceX collaboration to develop cold-gas thrusters that will help the vehicle go airborne, doing this indoors is probably not a safe, or even plausible, possibility.
Roadster event update
We’ve been tracking the weather closely with local meteorologists, but given the severe conditions predicted & because this event can only be held outdoors, we’ve made the difficult decision to reschedule.
New date is October 15. Additional details to…
— Tesla (@Tesla) September 28, 2026
FAA Airspace Restriction
The FAA gave Tesla a Temporary Flight Restriction (TFR) for 10,000 feet above ground level, much higher than the typical 2,000-foot restrictions that are usually placed at SpaceX’s McGregor, Texas site.
Tesla Roadster event requires restricted airspace, and the FAA obliges
Some have said that this massive increase is due to Tesla’s need to restrict unauthorized drone use for spying on the event.
Elon Admits High Winds
“Due to high winds, the new Roadster demo is postponed by 2 weeks,” Musk said in a post on X yesterday.
Due to high winds, the new Roadster demo is postponed by 2 weeks https://t.co/dV3ojDh1iT
— Elon Musk (@elonmusk) September 30, 2026
A reply reading, “What’s strong wind got to do with a car demo with four grounded wheels?” was directly below Musk’s post, satirically and sarcastically probing for more details.
All signs are pointing toward an aerial demonstration for the Roadster.
Tesla has secured $30 billion in fresh credit lines from Citibank and Wells Fargo in an effort to scale its biggest current projects.
Tesla agreed to a $20 billion three-year delayed-draw term loan facility from Citibank, it announced on Tuesday. Additionally, it signed a five-year, $8 billion revolving credit facility and a $2 billion, 364-day term credit facility with Wells Fargo.
In a filing with the Securities and Exchange Commission (SEC), that it “may draw” from the $20 billion delayed-draw term “from time to time” and “no more than ten times during the 18 months following the closing date.” This loan matures on September 29, 2029.
The five-year revolving facility from Wells Fargo will also be accessed by Tesla “from time to time,” and will become due and payable on September 29, 2031. Tesla can request two separate one-year extensions.
On the $2 billion, 364-day revolving loan, it becomes due and payable on September 28, 2027. Tesla can also increase its additional commitments to an additional $4 billion across the Revolving Facilities. This would increase the total facilities to $14 billion. Tesla said it does not plan to utilize any of these loans in 2026.
Tesla plans to utilize the money to help prop up its ambitions to scale its biggest products, each of which is either in early launch phases or still in development. Of course, we’re talking about Cybercab and Semi, which have launched, and Optimus, which is still under heavy development and working toward initial release.
All three Tesla products have one thing in common: they’ve all required Tesla to build new manufacturing lines for them.
For the Semi, Tesla built a brand new factory in Sparks, Nevada, adjacent to the Tesla Gigafactory. For Optimus, Tesla sunset Model S and X production at the Fremont Factory, which brought an end to the two flagship models, thus creating manufacturing space for the humanoid robot. Finally, Cybercab is being built at Gigafactory Texas and officially entered production earlier this year.
The cash will help Tesla bolster its finances for the continuing development of these products. Tesla said that it forecasts its CapEx to be over $25 billion, up from just over $8.5 billion last year. These loans surely help with that spending.
Tesla Cybercab and Semi have more in common than you might think
Elon Musk weather update tips Tesla Roadster speculation into Plaid Mode
