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Tesla Gigafactory 1’s rooftop array expands with new solar panel clusters
Tesla’s Gigafactory in Nevada has always been intended to be powered entirely by renewable energy. Aerial images of the facility taken earlier this year revealed that the company began installing several clusters of solar panels on the factory’s roof, though construction of the solar arrays was halted after the sixth cluster was completed. That said, Tesla appears to have resumed work on Gigafactory 1’s rooftop solar array, adding six new clusters to the roof of the sprawling facility recently.
Teslarati recently obtained aerial images of the new rooftop solar panel clusters being installed in Gigafactory 1. Continuing from the work started earlier this year, the new clusters of solar panels are installed on the north end of the facility. Images of the recently built parking lot north of Gigafactory 1 also show a number of containers and semi-trailers.
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- Aerial images of the Tesla Gigafactory as of August 28, 2018. [Credit: Joshua Mcdonald]
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- Aerial images of the Tesla Gigafactory as of August 28, 2018. [Credit: Joshua Mcdonald]
Aerial images of the Tesla Gigafactory as of August 28, 2018. [Credit: Joshua Mcdonald]
Gigafactory 1 is designed to feature an expansive 70 MW solar array on its roof. A handout of the facility given to guests at a previous investor event stated that Gigafactory 1’s solar array would likely be the largest rooftop installation in the world, particularly when the planned 13-million-square-foot facility is completed.
“GF1 is an all-electric factory with no fossil fuels (natural gas or petroleum) directly consumed. We will be using 100% sustainable energy through a combination of a 70 MW solar rooftop array and solar ground installations. The solar rooftop array is ~7x larger than the largest rooftop solar system installed today,” Tesla’s handout read.
-->Elon Musk recently provided an update on Gigafactory 1’s transition to fully renewable energy, stating in a recent tweet that the facility will be 100% renewable and powered by Tesla Solar at the end of 2019. This aggressive timeline is classic Musk, and it was released roughly at the same time as work on the facility’s rooftop solar array resumed.
This is utterly false. Fossil fuel merchants of doubt have been pushing that bs for years. Tesla Gigafactory will be 100% renewable powered (by Tesla Solar) by end of next year.
— Elon Musk (@elonmusk) August 25, 2018
As impressive as the Nevada Gigafactory is today, the facility is actually still less than 30% complete. Gigafactory 1 currently has a 1.9 million square foot footprint, with roughly 4.9 million square feet of operational space across several floors. The footprint of the building itself has not changed over the past two years either, as the company has largely focused on growing and optimizing the facility from within since the Model 3 ramp took center stage.
That said, signs are emerging that Tesla might be looking to expand Gigafactory 1’s physical footprint soon. The construction of the new parking lot north of the factory, for one, suggests that the company might be making way for some construction work west of the facility, which happens to be a parking lot used by employees today.
-->Gigafactory 1 is one of Tesla’s most pivotal facilities. Tasked with the production of battery packs and powertrains for the Model 3, Gigafactory is responsible for ensuring that Tesla meets the demand for the electric sedan. Late last month, Panasonic, Tesla’s battery partner, also noted that it would be increasing its manufacturing capacity by 30% to address the increasing demand for batteries caused by the Model 3 ramp. According to a report from 103-year-old Japanese news agency Nikkan Kogyo, Panasonic will be adding three new cell production lines for lithium-ion batteries in Gigafactory 1 at the “end of 2018.”
News
Tesla is improving Giga Berlin’s free “Giga Train” service for employees
With this initiative, Tesla aims to boost the number of Gigafactory Berlin employees commuting by rail while keeping the shuttle free for all riders.
Tesla will expand its factory shuttle service in Germany beginning January 4, adding direct rail trips from Berlin Ostbahnhof to Giga Berlin-Brandenburg in Grünheide.
With this initiative, Tesla aims to boost the number of Gigafactory Berlin employees commuting by rail while keeping the shuttle free for all riders.
New shuttle route
As noted in a report from rbb24, the updated service, which will start January 4, will run between the Berlin Ostbahnhof East Station and the Erkner Station at the Gigafactory Berlin complex. Tesla stated that the timetable mirrors shift changes for the facility’s employees, and similar to before, the service will be completely free. The train will offer six direct trips per day as well.
“The service includes six daily trips, which also cover our shift times. The trains will run between Berlin Ostbahnhof (with a stop at Ostkreuz) and Erkner station to the Gigafactory,” Tesla Germany stated.
Even with construction continuing at Fangschleuse and Köpenick stations, the company said the route has been optimized to maintain a predictable 35-minute travel time. The update follows earlier phases of Tesla’s “Giga Train” program, which initially connected Erkner to the factory grounds before expanding to Berlin-Lichtenberg.
-->Tesla pushes for majority rail commuting
Tesla began production at Grünheide in March 2022, and the factory’s workforce has since grown to around 11,500 employees, with an estimated 60% commuting from Berlin. The facility produces the Model Y, Tesla’s best-selling vehicle, for both Germany and other territories.
The company has repeatedly emphasized its goal of having more than half its staff use public transportation rather than cars, positioning the shuttle as a key part of that initiative. In keeping with the factory’s sustainability focus, Tesla continues to allow even non-employees to ride the shuttle free of charge, making it a broader mobility option for the area.
News
Tesla Model 3 and Model Y dominate China’s real-world efficiency tests
The Tesla Model 3 posted 20.8 kWh/100 km while the Model Y followed closely at 21.8 kWh/100 km.
Tesla’s Model 3 and Model Y once again led the field in a new real-world energy-consumption test conducted by China’s Autohome, outperforming numerous rival electric vehicles in controlled conditions.
The results, which placed both Teslas in the top two spots, prompted Xiaomi CEO Lei Jun to acknowledge Tesla’s efficiency advantage while noting that his company’s vehicles will continue refining its own models to close the gap.
Tesla secures top efficiency results
Autohome’s evaluation placed all vehicles under identical conditions, such as a full 375-kg load, cabin temperature fixed at 24°C on automatic climate control, and a steady cruising speed of 120 km/h. In this environment, the Tesla Model 3 posted 20.8 kWh/100 km while the Model Y followed closely at 21.8 kWh/100 km, as noted in a Sina News report.
These figures positioned Tesla’s vehicles firmly at the top of the ranking and highlighted their continued leadership in long-range efficiency. The test also highlighted how drivetrain optimization, software management, and aerodynamic profiles remain key differentiators in high-speed, cold-weather scenarios where many electric cars struggle to maintain low consumption.
Xiaomi’s Lei Jun pledges to continue learning from Tesla
Following the results, Xiaomi CEO Lei Jun noted that the Xiaomi SU7 actually performed well overall but naturally consumed more energy due to its larger C-segment footprint and higher specification. He reiterated that factors such as size and weight contributed to the difference in real-world consumption compared to Tesla. Still, the executive noted that Xiaomi will continue to learn from the veteran EV maker.
“The Xiaomi SU7’s energy consumption performance is also very good; you can take a closer look. The fact that its test results are weaker than Tesla’s is partly due to objective reasons: the Xiaomi SU7 is a C-segment car, larger and with higher specifications, making it heavier and naturally increasing energy consumption. Of course, we will continue to learn from Tesla and further optimize its energy consumption performance!” Lei Jun wrote in a post on Weibo.
-->Lei Jun has repeatedly described Tesla as the global benchmark for EV efficiency, previously stating that Xiaomi may require three to five years to match its leadership. He has also been very supportive of FSD, even testing the system in the United States.
Elon Musk
Elon Musk reveals what will make Optimus’ ridiculous production targets feasible
Musk recent post suggests that Tesla has a plan to attain Optimus’ production goals.
Elon Musk subtly teased Tesla’s strategy to achieve Optimus’ insane production volume targets. The CEO has shared his predictions about Optimus’ volume, and they are so ambitious that one would mistake them for science fiction.
Musk’s recent post on X, however, suggests that Tesla has a plan to attain Optimus’ production goals.
The highest volume product
Elon Musk has been pretty clear about the idea of Optimus being Tesla’s highest-volume product. During the Tesla 2025 Annual Shareholder Meeting, Musk stated that the humanoid robot will see “the fastest production ramp of any product of any large complex manufactured product ever,” starting with a one-million-per-year line at the Fremont Factory.
Following this, Musk stated that Giga Texas will receive a 10 million-per-year unit Optimus line. But even at this level, the Optimus ramp is just beginning, as the production of the humanoid robot will only accelerate from there. At some point, the CEO stated that a Mars location could even have a 100 million-unit-per-year production line, resulting in up to a billion Optimus robots being produced per year.
Self-replication is key
During the weekend, Musk posted a short message that hinted at Tesla’s Optimus strategy. “Optimus will be the Von Neumann probe,” the CEO wrote in his post. This short comment suggests that Tesla will not be relying on traditional production systems to make Optimus. The company probably won’t even hire humans to produce the humanoid robot at one point. Instead, Optimus robots could simply produce other Optimus robots, allowing them to self-replicate.
-->The Von Neumann is a hypothetical self-replicating spacecraft proposed by the mathematician and physicist John von Neumann in the 1940s–1950s. The hypothetical machine in the concept would be able to travel to a new star system or location, land, mine, and extract raw materials from planets, asteroids, and moons as needed, use those materials to manufacture copies of itself, and launch the new copies toward other star systems.
If Optimus could pull off this ambitious target, the humanoid robot would indeed be the highest volume product ever created. It could, as Musk predicted, really change the world.
Tesla is improving Giga Berlin’s free “Giga Train” service for employees
Tesla Model 3 and Model Y dominate China’s real-world efficiency tests
