

Energy
Tesla Solarglass Roof: LA-based homeowner shares first impressions of V3 roof tiles
As the cost of installing solar drops in the United States by as much as 70% in the last decade, more and more homeowners in the US are considering a switch to greener energy. At the forefront of Tesla’s push into residential solar is its flagship Solarglass roof, which are essentially solar cells that look like standard roofing tiles. Yet, inasmuch as Tesla’s Solarglass tiles have caught numerous headlines in the past, many questions about the product, such as its durability, installation process, and real cost, remain.
Los Angeles, California-based Austin Flack is one of the first consumers to get a Tesla Solarglass Roof. In a recent video shared on YouTube, Flack decided to share his first impressions about his Tesla Solarglass experience.
“We placed our order in early November and were scheduled for installation in mid-December, but rainy weather pushed installation into January. Unfortunately, the federal rebate fell from 30% in 2019 to 26% in 2020, but Telsa was kind enough to give us a 4% discount to make up the difference,” Flack wrote on the description of his review on YouTube.
COST OF TESLA SOLARGLASS ROOF
Prior to the announcement of Tesla about the latest version of the company’s flagship solar product in October 2019, Flack and his wife thought of getting Tesla solar panels but they discovered that their roof, which measures 1,745 sq.ft., wasn’t properly designed and installed.
The couple decided to compare the cost of getting a new composite roof plus the Tesla solar panel array they need. Estimates for the composite tile roof ranged roughly between $9,000 and $12,000. Meanwhile, Tesla calculated that their Los Angeles home would need a system size of around 9.087 kW with some room for energy needs to grow. The quote from Tesla for the Solarglass Roof is $33,749 after rebates. This price is about $3,000 more expensive than the cost of getting a composite tile roof with the equivalent solar panel array setup.
According to Flack, they went for the Solarglass Roof and found the price reasonable “given the enhanced aesthetics of solar glass and how much value it might add to our home.”
SOLARGLASS ROOF INSTALLATION
Installation of the Solarglass Roof started on Jan. 6 and took 7 days including removal of the old roof, installation of Solarglass tiles, replacement of other roofing elements, and hardware setup.
Flack shared that their new roof is mostly solar tiles with some dummy tiles for the edges and to fit near the vents and pipes. The roof was also raised by about 1.5 inches to have some space for wiring and ventilation.
From the solar tiles, Tesla neatly installed conduit boxes in their attic and directed the power to a DC inverter, shutoff switches, and 200 amp electrical box.
The couple is still waiting for the final approval to turn on the system and promised to post an update video once it’s online.
“For now, we are very happy with the Solar Glass. It’s beautiful. It’s durable. It’s guaranteed for 25 years, and when fully operational it will completely zero out our electrical bill,” Flack said.
TESLA SOLAR ENERGY BUSINESS WILL SHINE IN 2020
Tesla’s solar business had its moments under the cloud and seemingly losing its shine amid rising competition from smaller solar roof installers and lower subsidies for solar panels. With the solar business’ back on the wall, Elon Musk re-aligned and reignited Tesla’s solar push with the promise to ramp up production and aim to install more solar roofs compared to previous years. Musk showed a more cautious side and for most, that was a good thing.
“In the long term, I expect Tesla Energy to be of the same or roughly the same size as Tesla’s automotive sector or business. This is the most underappreciated group. I think it could be bigger, but it’s certainly of a similar magnitude to Tesla Solar. Meaning, if you take Tesla Solar plus battery stuff, Tesla Energy is, I think, the least appreciated element,” Musk said.
At present, Tesla offers $250-incentive for new customers and for people who will refer other buyers.
In December, Tesla also installed canopies for their solar test houses in its Fremont factory, reminiscent of how it used big tents to solve Model 3 production issues. During the same period, Tesla looked to hire more installers to beef up its teams in California, Texas, Nevada, and Florida. In Q3 of 2019, the company deployed about 43MW of solar, about 48% more compared to Q3.
Check out Austin Flack’s first impression of the Tesla Solarglass Roof below:
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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