Energy
Tesla’s JB Straubel discusses batteries and scalability as new energy storage project is announced
Tesla Energy might not be attracting as much news as the company’s electric car business, but it has achieved some milestones of its own over the past few years. As of June 2018, Tesla had deployed a total of 1 GWh of energy storage worldwide, and during the company’s Q2 earnings call, Elon Musk and CTO JB Straubel reaffirmed Tesla’s commitment to growing its energy business over the coming years. Staubel even remarked that it might only be a matter of time before Tesla Energy overtakes the company’s electric car business in size.
Tesla’s batteries, such as the Powerpacks deployed on the Hornsdale Power Reserve in South Australia, are proving themselves as viable alternatives to fossil fuel-powered plants, and this is partly due to the fact that the energy industry hasn’t really evolved much over the past few decades. Tesla CTO JB Straubel highlighted this point in a recent segment with The Verge.
“You know, the electric grid hasn’t changed that much from 100-some years ago when Tesla and Edison were actually inventing it. Most people don’t realize, but it’s instantaneously matched — every time you turn on a light switch in your house, instantaneously, a power plant, somewhere, connected to that same grid, has to ramp up a little more power output to make the light operate,” Straubel said.
Most of the power used by cities today rely on large gas or coal-powered plants. In the United States, around 60% of power comes from fossil fuels, while ~20% comes from nuclear power stations. These large, baseload gas plants are consistent, but they are not very flexible. For example, when demand for power is too low, these plants lose money. When the demand gets too high, these facilities usually have to rely on faster, smaller plants called Peaker Plants to support the grid. Unfortunately, Peaker Plants are also traditionally dirtier than baseload gas plants. Straubel noted that this system causes the grid to get “dinged” on both sides.
“You get dinged when you don’t have enough load, and then when you have too much, you also get dinged inefficiently,” Straubel said.
It’s still going to take some time before clean energy solutions become capable of adequately supporting the power grid on their own. Renewable energy such as solar and wind, after all, are very promising, but they are not very consistent. Solar power can get compromised on a cloudy day, and wind power can be compromised when there is no wind. This is where battery storage comes in. Paired with renewable solutions, batteries such as Tesla’s industry-grade Powerpacks are able to store gathered energy and feed it to the grid when needed. Grid-scale chemical batteries only comprise a small part of the renewable energy market for now, but the use of batteries has been growing over the years. This, according to the Tesla CTO, would have been inconceivable ten years ago.
“That was kind of unheard of ten years ago. If you told someone that hey, a lithium-ion battery could do that sort of duty, storing solar energy every single day for ten years, they wouldn’t have believed it. I think the biggest thing is scalability. Batteries have this beautiful ability to vary economically, scale from gigawatt-hour-sized systems all the way down to 10 kilowatt-hours in your house,” Straubel said.
True to Tesla’s statement during its Q2 2018 earnings call, the list of the company’s energy projects continue to get longer. Just recently, Infigen Energy, an operator of renewable energy generation solutions in Australia, ordered a 25 MW/52 MWh energy storage system from Tesla. The batteries would be deployed at the 278.5MW Lake Bonney Wind Farm in South Australia and connected to the grid via the Mayurra substation. In a statement to Renew Economy, Australian Renewable Energy Agency (ARENA) chief Ivor Frischknecht expressed his optimism about the energy storage project.
“It is clear that grid-scale batteries have an important role in stabilizing the grid. The co-location of a battery with a wind farm provides an opportunity for Infigen to pursue regulatory changes that could improve revenue outcomes for grid-scale batteries, helping to become more competitive,” he said.
During Tesla’s 2018 Annual Shareholder Meeting, Tesla CEO Elon Musk mentioned that the company is getting closer to a battery breakthrough, with the company on pace to hit a battery cell cost of $100 per kWh by the end of 2018 depending on the stability of current commodity prices. Tesla also announced that production of residential energy products such as the Powerwall 2 and the Solar Roof tiles are set to see an increase within the next few quarters.
Energy
Tesla VP hints at Solar Roof comeback with Giga New York push
The comments hint at possible renewed life for the Solar Roof program, which has seen years of slow growth since its 2016 unveiling.
Tesla’s long-awaited and way underrated Solar Roof may finally be getting its moment. During the company’s Q3 2025 earnings call, Vice President of Energy Engineering Michael Snyder revealed that production of a new residential solar panel has started at Tesla’s Buffalo, New York facility, with shipments to customers beginning in the first quarter of 2026.
The comments hint at possible renewed life for the Solar Roof program, which has seen years of slow growth since its 2016 unveiling.
Tesla Energy’s strong demand
Responding to an investor question about Tesla’s energy backlog, Snyder said demand for Megapack and Powerwall continues to be “really strong” into next year. He also noted positive customer feedback for the company’s new Megablock product, which is expected to start shipping from Houston in 2026.
“We’re seeing remarkable growth in the demand for AI and data center applications as hyperscalers and utilities have seen the versatility of the Megapack product. It increases reliability and relieves grid constraints,” he said.
Snyder also highlighted a “surge in residential solar demand in the US,” attributing the spike to recent policy changes that incentivize home installations. Tesla expects this trend to continue into 2026, helped by the rollout of a new solar lease product that makes adoption more affordable for homeowners.
Possible Solar Roof revival?
Perhaps the most intriguing part of Snyder’s remarks, however, was Tesla’s move to begin production of its “residential solar panel” in Buffalo, New York. He described the new panels as having “industry-leading aesthetics” and shape performance, language Tesla has used to market its Solar Roof tiles in the past.
“We also began production of our Tesla residential solar panel in our Buffalo factory, and we will be shipping that to customers starting Q1. The panel has industry-leading aesthetics and shape performance and demonstrates our continued commitment to US manufacturing,” Snyder said during the Q3 2025 earnings call.
Snyder did not explicitly name the product, though his reference to aesthetics has fueled speculation that Tesla may finally be preparing a large-scale and serious rollout of its Solar Roof line.
Originally unveiled in 2016, the Solar Roof was intended to transform rooftops into clean energy generators without compromising on design. However, despite early enthusiasm, production and installation volumes have remained limited for years. In 2023, a report from Wood Mackenzie claimed that there were only 3,000 operational Solar Roof installations across the United States at the time, far below forecasts. In response, the official Tesla Energy account on X stated that the report was “incorrect by a large margin.”
Energy
Tesla China’s Megafactory helps boost Shanghai’s battery exports by 20%: report
Located in the Lingang New Area of the Shanghai Free Trade Zone, the Tesla Megafactory has been running at full throttle since opening in February.
Reports from China have indicated that the Tesla Shanghai Megafactory has become a notable player in China’s booming battery export market.
Located in the Lingang New Area of the Shanghai Free Trade Zone, the Tesla Megafactory has been running at full throttle since opening in February. It produces Tesla Megapack batteries for domestic and international use.
Tesla Shanghai Megafactory
As noted in a report from Sina Finance, the Tesla Shanghai Megafactory’s output of Megapack batteries helped drive a notable rise in lithium battery shipments from the city in the first three quarters of 2025. This is quite impressive as the Megafactory is a rather young facility, though it has been steadily increasing its production capacity.
“The establishment of this benchmark factory has not only driven the rapid development of Shanghai’s energy storage industry but also become a new growth engine for foreign trade exports. Driven by the Tesla energy storage factory’s opening, Shanghai’s lithium battery exports reached 32.15 billion yuan ($4.5 billion) in the first three quarters, a 20.7% increase,” the publication wrote.
Ultimately, the Shanghai Megafactory has proved helpful to the city’s “new three” industries, which are comprised of new energy vehicles, lithium batteries, and photovoltaic systems. Exports of the “new three” products reached 112.17 billion yuan ($15.7 billion), a 6.3% year-over-year increase during the same period. The city’s total trade volume grew 5.4% year-over-year as well, with exports up 11.3%, driven largely by the clean energy sector’s performance.
Energy storage is helping Shanghai
Since opening in February, the Shanghai Megafactory has been firing on all cylinders. In late July, Tesla Energy announced that the new battery factory has successfully produced its 1,000th Megapack unit. That’s quite impressive for a facility that, at the time, had only been operational for less than six months.
Speed has always been a trademark of the Shanghai Megafactory. Similar to Tesla’s other key facilities in China, the Megafactory was constructed quickly. The facility started its construction on May 23, 2024. Less than a year later, the site officially started producing Megapack batteries. By late March 2025, Tesla China noted that it had shipped the first batch of Megapack batteries from the Shanghai plant to foreign markets.
Energy
Tesla recalls Powerwall 2 units in Australia
Tesla will recall Powerwall 2 units in Australia after a handful of property owners reported fires that caused “minor property damage.” The fires were attributed to cells used by Tesla in the Powerwall 2.
Tesla Powerwall is a battery storage unit that retains energy from solar panels and is used by homeowners and businesses to maintain power in the event of an outage. It also helps alleviate the need to rely on the grid, which can help stabilize power locally.
Powerwall owners can also enroll in the Virtual Power Plant (VPP) program, which allows them to sell energy back to the grid, helping to reduce energy bills. Tesla revealed last year that over 100,000 Powerwalls were participating in the program.
Tesla announces 100k Powerwalls are participating in Virtual Power Plants
The Australia Competition and Consumer Commission said in a filing that it received several reports from owners of fires that led to minor damage. The Australian government agency did not disclose the number of units impacted by the recall.
The issue is related to the cells, which Tesla sources from a third-party company.
Anyone whose Powerwall 2 unit is impacted by the recall will be notified through the Tesla app, the company said.
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