Energy
Tesla Solar Roof takes step towards new variants with textured, colored tile patent
It appears that Tesla is working on some improvements for its Solar Roof tiles that may allow the company to release new variants of the flagship solar product. These potential Solar Roof improvements were discussed extensively in a recently-published patent, which described how the electric car and energy company intends to roll out tiles that feature a better, more seamless appearance.
Tesla’s Solarglass Roof tiles are already among the most aesthetically-pleasing PV systems in the market. A Solar Roof installation involves the setup of both PV and non-PV roof tiles, and according to Tesla, this could present some issues. Since some tiles do not have solar cells in them, there will be some angles or times when it is possible to distinguish which tiles have solar cells and which do not.
Tesla described this issue in the background of its patent, titled “System and Method for Improving Color Appearance of Solar Roofs” and published on February 11, 2021.
“When viewed from a shallow angle (e.g., when the roof is viewed from the street), the dark-colored photovoltaic structures can become visible. The color contrast between the photovoltaic structures and the glass cover can create a scene that is not aesthetically pleasing… Although the non-PV roof tiles can include similar glass covers as those of the PV roof tiles, the absence of embedded photovoltaic structures can result in the non-PV roof tiles having a different color appearance than that of the PV roof tiles.”
Tesla notes that these issues are due to several factors, including tiny imperfections during the Solar Roofs’ manufacturing process or the fact that PV roof tiles tend to look different when viewed under different lighting and at different viewing angles. According to Tesla, there are ways to get around these challenges, such as adopting a robust color-management scheme and some adjustments in the Solar Roof tiles’ manufacturing line.
“First, to reduce the color contrast within a PV roof tile, the PV roof tile can encapsulate polycrystalline-Si-based photovoltaic structures. By controlling the size and pattern of the surface texture of the polycrystalline-Si-based photovoltaic structures, one can reduce the “glow” of the photovoltaic structures. While keeping the front cover of the roof tile transparent, the back surface of the back cover can be coated with a layer of paint that matches the color of the textured surface of the photovoltaic structures to reduce the color contrast within the PV roof tile. A similar paint layer can also be deposited onto the back surface of the non-PV roof tiles.”
“As a result, the color appearance of the PV and non-PV roof tiles can be quite similar. Moreover, when assembling the PV roof tiles, the embedded photovoltaic structures are fed into the production line following a predetermined color pattern such that a majority of PV roof tiles contains solar cells of a similar color and PV roof tiles of different colors are evenly or randomly mixed to prevent clustering of colors on a roof.”
Through these methods, Tesla noted that it would be able to create Solar Roof tiles that feature much less “glow” than typical integrated PV systems. The patent also covered how reactive ion etching (RIE) techniques could be utilized to create textured PV roof tiles. These invoke images of the various Solar Roof variants that Elon Musk unveiled in 2016, which included textured tiles that mirrored the appearance of materials like slate and clay.
“The surface of a polycrystalline-Si-based solar cell can be textured using a reactive ion etching (RIE) technique. In further embodiments, the feature size of the RIE-textured surface can be less than 1 micron (i.e., 0.5 micron or less). In alternative embodiments, the surface of the solar cells can have pyramid texturing with the base width of the pyramids being less than 1 micron (e.g., 0.7 micron or less). Compared to the textured surface of a monocrystalline-Si-based solar cell, the RIE-textured surface of the polycrystalline-Si solar cells can have improved surface uniformity. As a result, the PV roof tiles can have reduced color flop and glow.”
“In alternative embodiments, reducing the cell glow can be achieved through specifically designed anti-reflection coating. This specially designed anti-reflective coating (AR) on a monocrystalline-Si-based solar cell surface can include materials with a higher refractive index than a conventional AR coating (e.g., an indium tin oxide (ITO) coating). More precisely, the specifically designed AR coating can include a layer of SiNx or a SiOxNy /SiNy double layer structure. As a result, the cell glow can be reduced by three- to eightfold with low (e.g., less than 5%) power loss.”
Elon Musk has stated that 2021 will be a key year for the Solar Roof, with the CEO noting that its potential would be evident this year. Considering the company’s ongoing rollout of the integrated PV system and the development of better Solar Roof designs, it may only be a matter of time before more customers of Tesla’s flagship residential solar product would have more design options available.
Read Tesla’s recently-published Solar Roof patent could be accessed here.
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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.
Energy
Tesla launches first Virtual Power Plant in UK – get paid to use solar
Tesla has launched its first-ever Virtual Power Plant program in the United Kingdom.
Tesla has launched its first-ever Virtual Power Plant program in the United Kingdom. This feature enables users of solar panels and energy storage systems to sell their excess energy back to the grid.
Tesla is utilizing Octopus Energy, a British renewable energy company that operates in multiple markets, including the UK, France, Germany, Italy, Spain, Australia, Japan, New Zealand, and the United States, as the provider for the VPP launch in the region.
The company states that those who enroll in the program can earn up to £300 per month.
Tesla has operated several VPP programs worldwide, most notably in California, Texas, Connecticut, and the U.S. territory of Puerto Rico. This is not the first time Tesla has operated a VPP outside the United States, as there are programs in Australia, Japan, and New Zealand.
This is its first in the UK:
Our first VPP in the UK
You can get paid to share your energy – store excess energy in your Powerwall & sell it back to the grid
You’re making £££ and the community is powered by clean energy
Win-win pic.twitter.com/evhMtJpgy1
— Tesla UK (@tesla_uk) July 17, 2025
Tesla is not the only company that is working with Octopus Energy in the UK for the VPP, as it joins SolarEdge, GivEnergy, and Enphase as other companies that utilize the Octopus platform for their project operations.
It has been six years since Tesla launched its first VPP, as it started its first in Australia back in 2019. In 2024, Tesla paid out over $10 million to those participating in the program.
Participating in the VPP program that Tesla offers not only provides enrolled individuals with the opportunity to earn money, but it also contributes to grid stabilization by supporting local energy grids.
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