Over the course of this year, Tesla’s executives such as CEO Elon Musk and CTO JB Straubel have remarked that the company’s energy business is growing at a rapid rate. Recent reports from Buffalo, NY indicate that this growth will soon be evident in the operations of Tesla’s Gigafactory 2, particularly since the production ramp of the company’s flagship solar product — the Solar Roof tiles — is now going through its initial phases.
Tesla recently invited local news outlets on a guided tour of Gigafactory 2. The tour was the first time reporters were given access to the 1.2-million sq ft facility, and while the media were not allowed to film anything inside the factory itself, Tesla did provide a number of updates about Gigafactory 2 and the Solar Roof tiles. First off, Tesla noted that there are currently around 800 employees (comprised of Tesla and Panasonic workers) working on the site. This number is ahead of the facility’s targets, which require 500 workers to be employed on the site by April 2019. Gigafactory 2 is also running 24/7, with workers alternating 12-hour shifts.
The guided tour was led by director of operations Ryan Nungesser, who is in charge of Gigafactory 2. Nungesser, a former US marine platoon commander, was employed by the electric car and energy company after his tenure at Boston Scientific, where he worked several roles including Director of Production and Director of Materials Management. While Elon Musk himself has reportedly not visited the facility in person, the former marine and the CEO regularly keep in touch through weekly webcast meetings. Addressing the local media personnel on the tour, Nungesser remarked that the facility maintains a collaborative atmosphere, thanks to Tesla’s flat hierarchy.
Tesla reportedly had to work through notable bottlenecks in the development, testing, and production of the Solar Roof tiles, which are designed to be incredibly durable and last the lifetime of a house. Dan Miner, a reporter for Buffalo Business First, nevertheless noted that Tesla is confident that it currently has a “repeatable, efficient process” that would allow the company to begin the production of the Solar Roof tiles in greater volumes. Tesla declined to give details on the current output of the facility, though the company has stated that there is a long waiting list of Solar Roof customers that would likely keep the factory busy for years.
As the facility prepares to ramp the production of the Solar Roof tiles, Tesla managers in the facility are expecting the addition of new manufacturing lines. Another hiring ramp is also expected in the near future. Corey Leone, a facilities maintenance technician at Gigafactory 2 who previously worked at a coal-burning plant in Dunkirk, noted to Rochester First News that his experience over the past three years has been quite positive.
“To be able to come here and do green energy, to go from coal to this, it’s been an amazing journey. I’ve been here almost three years. It’s been a fantastic ride,” he said.
Tesla’s Solar Roof tiles are a pivotal part of the company’s plan to promote “sustainable energy independence.” While the cost of the Solar Roof tiles is far higher than conventional solar panels for now, Tesla noted in its Q2 2017 Update Letter that the shingles, which look like regular roofing materials but are capable of capturing power from the sun, would be far more affordable in the future.
“Adopting solar has historically required a degree of aesthetic compromise, but Solar Roof provides clean energy from a better-looking roof. Furthermore, Solar Roof is more affordable than conventional roofs because in most cases, it ultimately pays for itself by reducing or eliminating a home’s electricity bill,” Tesla noted.
As mentioned by Elon Musk during the third quarter earnings call, the production of the Solar Roof tiles is taking longer to ramp due to the shingles’ long development cycle. Musk did state, though, that the production of the Solar Roof tiles should hit its stride sometime next year.
“We’ll also start going into volume production of the solar tile roof next year. That’s quite a long development cycle for — because anything that’s roof has got to last 30 years. So even if you do accelerate life testing as fast as possible, there’s still a minimum amount of time required to do that. And there’s a lot of engineering that goes into how do you put on the solar tile roof with a — and not be really labor-intensive in doing so. So there’s a lot of engineering not just in the tile but in the way it’s done,” Musk said.
Energy
Tesla Energy is the world’s top global battery storage system provider again
Tesla Energy captured 15% of the battery storage segment’s global market share in 2024.
Tesla Energy held its top position in the global battery energy storage system (BESS) integrator market for the second consecutive year, capturing 15% of global market share in 2024, as per Wood Mackenzie’s latest rankings.
Tesla Energy’s lead, however, is shrinking, as Chinese competitors like Sungrow are steadily increasing their global footprint, particularly in European markets.
Tesla Energy dominates in North America, but its lead is narrowing globally
Tesla Energy retained its leadership in the North American market with a commanding 39% share in 2024. Sungrow, though still ranked second in the region, saw its share drop from 17% to 10%. Powin took third place, even if the company itself filed for bankruptcy earlier this year, as noted in a Solar Power World report.
On the global stage, Tesla Energy’s lead over Sungrow shrank from four points in 2023 to just one in 2024, indicating intensifying competition. Chinese firm CRRC came in third worldwide with an 8% share.
Wood Mackenzie ranked vendors based on MWh shipments with recognized revenue in 2024. According to analyst Kevin Shang, “Competition among established BESS integrators remains incredibly intense. Seven of the top 10 vendors last year struggled to expand their market share, remaining either unchanged or declining.”
Chinese integrators surge in Europe, falter in U.S.
China’s influence on the BESS market continues to grow, with seven of the global top 10 BESS integrators now headquartered in the country. Chinese companies saw a 67% year-over-year increase in European market share, and four of the top 10 BESS vendors in Europe are now based in China. In contrast, Chinese companies’ market share in North America dropped more than 30%, from 23% to 16% amid Tesla Energy’s momentum and the Trump administration’s policies.
Wood Mackenzie noted that success in the global BESS space will hinge on companies’ ability to adapt to divergent regulations and geopolitical headwinds. “The global BESS integrator landscape is becoming increasingly complex, with regional trade policies and geopolitical tensions reshaping competitive dynamics,” Shang noted, pointing to Tesla’s maintained lead and the rapid ascent of Chinese rivals as signs of a shifting industry balance.
“While Tesla maintains its global leadership, the rapid rise of Chinese integrators in Europe and their dominance in emerging markets like the Middle East signals a fundamental shift in the industry. Success will increasingly depend on companies’ ability to navigate diverse regulatory environments, adapt to local market requirements, and maintain competitive cost structures across multiple regions,” the analyst added.
Energy
Tesla inks multi-billion-dollar deal with LG Energy Solution to avoid tariff pressure
Tesla has reportedly secured a sizable partnership with LGES for LFP cells, and there’s an extra positive out of it.
Tesla has reportedly inked a multi-billion-dollar deal with LG Energy Solution in an effort to avoid tariff pressure and domesticate more of its supply chain.
Reuters is reporting that Tesla and LGES, a South Korean battery supplier of the automaker, signed a $4.3 billion deal for energy storage system batteries. The cells are going to be manufactured by LGES at its U.S. factory located in Michigan, the report indicates. The batteries will be the lithium iron phosphate, or LFP, chemistry.
Tesla delivers 384,000 vehicles in Q2 2025, deploys 9.6 GWh in energy storage
It is a move Tesla is making to avoid buying cells and parts from overseas as the Trump White House continues to use tariffs to prioritize domestic manufacturing.
LGES announced earlier today that it had signed a $4.3 billion contract to supply LFP cells over three years to a company, but it did not identify the customer, nor did the company state whether the batteries would be used in automotive or energy storage applications.
The deal is advantageous for both companies. Tesla is going to alleviate its reliance on battery cells that are built out of the country, so it’s going to be able to take some financial pressure off itself.
For LGES, the company has reported that it has experienced slowed demand for its cells in terms of automotive applications. It planned to offset this demand lag with more projects involving the cells in energy storage projects. This has been helped by the need for these systems at data centers used for AI.
During the Q1 Earnings Call, Tesla CFO Vaibhav Taneja confirmed that the company’s energy division had been impacted by the need to source cells from China-based suppliers. He went on to say that the company would work on “securing additional supply chain from non-China-based suppliers.”
It seems as if Tesla has managed to secure some of this needed domestic supply chain.
Energy
Tesla Shanghai Megafactory produces 1,000th Megapack for export to Europe
The Shanghai Megafactory was able to hit this milestone less than six months after it started producing the Megapack.
Tesla Energy has announced a fresh milestone for its newest Megapack factory. As per the electric vehicle maker, the Shanghai Megafactory has successfully produced its 1,000th Megapack battery.
The facility was able to hit this milestone less than six months after it started producing the grid-scale battery system.
New Tesla Megapack Milestone
As per Tesla Asia in a post on its official accounts on social media platform X, the 1,000th Megapack unit that was produced at the Shanghai Megafactory would be exported to Europe. As noted in a CNEV Post report, Tesla’s energy products are currently deployed in over 65 countries and regions globally. This allows Tesla Energy to compete in energy markets that are both emerging and mature.
To commemorate the 1,000th Megapack produced at the Shanghai Megafactory, the Tesla China team posted with the grid-scale battery with celebratory balloons that spelled “Megapack 1000.” The milestone was celebrated by Tesla enthusiasts on social media, especially since the Shanghai Megafactory only started its operations earlier this year.
Quick Megafactory Ramp
The Shanghai Megafactory, similar to Tesla’s other key facilities in China, was constructed quickly. The facility started its construction on May 23, 2024, and it was hailed as Tesla’s first entry storage project outside the United States. Less than a year later, on February 11, 2025, the Shanghai Megafactory officially started producing Megapack batteries. And by March 21, 2025, Tesla China noted that it had shipped the first batch of Megapack batteries from the Shanghai plant to foreign markets.
While the Shanghai Megafactory is still not at the same level of output as Tesla’s Lathrop Megafactory, which produces about 10,000 Megapacks per year, its ramp seems to be quite steady and quick. It would then not be surprising if Tesla China announces the Shanghai Megafactory’s 2,000th Megapack milestone in the coming months.
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