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Investor's Corner

What You Need to Know about Tesla’s Battery Storage Solution

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A new tweet from Elon Musk this week promises a new product line debut on April 30 and most, including me, have our guesses that it will be Tesla’s battery storage solution as mentioned in the last quarterly earnings call.

From Dana Hull's article last June in the San Jose Mercury, the battery storage product offers:

  • A lithium-ion battery storage system, called the home energy Storage system, from Solar City
  • Contained in a 4-foot-tall metal box mounted on the wall of a  garage
  • Made by Tesla but offered by San Mateo-based SolarCity to its California solar customers as part of a small pilot project.
  • Goes for $1,500 down and $15 a month over a 10-year lease period.
SolarCity-Tesla-energy-storage

SolarCity + Tesla battery pack for storing solar energy. Source: Forum member myI55 via CleanTechnica

Hull received feedback from a battery storage user that's undergoing the pilot program.  But more recently, Global Equities Research analyst Trip Chowdhry via Benzinga pulled in some real-world data from two additional people testing Tesla's battery storage solution.

Here are some of the highlights from this article:

  • The Battery has to be installed 1.5 feet above the ground, and should have an open space of 1 ft on all sides
  • The battery does not make any noise, does not need any maintenance, has no drippings
  • The Battery also has an inverter
  • The installer offered a choice between 10KWH and 15KWH;

Chowdry's article reported a similar price as to what was reported in the San Jose Mercury article and mentioned that a "10kWh battery could be priced at $13,000 with a 50 percent rebate from PG&E Corporation." That's a hefty rebate and a big incentive.

The Chowdry article also stated that there are battery storage owners in other states, about 100. So it's not limited to California. However, the April 30 announcement could be limited to just current Solar City sales territories.

The Benzinga article mentioned that one owner "charges the battery at night at $0.11 and then sells it back to the grid at 3PM for $0.43, and makes $10 to 12 month doing this."

This revenue opportunity may not exist in all states. In Illinois, solar customers receive a monthly credit based on the number of solar kWh it pushes back to the grid.

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This sell-back opportunity for the resident is a point Jigar Shah, solar financier, has emphasized.  Shah argues that utilities need to have real-time analytics and a communication infrastructure to provide energy pricing signals quickly to customers. Shah feels the onus is on utilities to modernize and provide residents these tools or else residential battery solutions could be "dead assets."

From the most recent earnings conference call in February, Musk says that Tesla could be producing these battery packs in six months. JB Straubel, Tesla's point person for its energy storage strategy  (& gigafactory), reiterated this point last year at an energy industry conference.

Struaubel said, "We see the California mandate for stationary energy storage by 2020 and we're (Tesla) quite a lot more bullish. We think that mandate will be met and far exceeded before the timeframe expires. We all should be thinking bigger."

So are you considering a battery storage solution?

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"Grant Gerke wears his Model S on his sleeve and has been writing about Tesla for the last five years on numerous media sites. He has a bias towards plug-in vehicles and also writes about manufacturing software for Automation World magazine in Chicago. Find him at Teslarati

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SpaceX Starship just nailed something it’s never done before

SpaceX’s Starship flew successfully Friday, landing both stages and deploying its first Starlink V3 satellites.

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Starship’s thirteenth test flight delivered exactly what SpaceX needed with a clean liftoff, two successful stage recoveries, and the first real payload the vehicle has ever carried to space. Booster 20 and Ship 40 lifted off at 5:51 p.m. CT from Starbase, and by the time the mission wrapped roughly an hour later, both halves of the rocket had done exactly what they were supposed to do.

Booster 20 separated from Ship 40 a few minutes into the flight and stuck a controlled splashdown in the Gulf of Mexico about six minutes after liftoff. That is a meaningful turnaround from Flight 12 in May, when the booster lost several engines during its boostback burn before a hard water landing attempt.


Starship 40’s performance was arguably the bigger win. The vehicle deployed the first 20 operational Starlink V3 satellites Starship has ever carried, then flew a suborbital arc to a landing in the Indian Ocean that SpaceX commentator Dan Huot called the company’s softest splashdown yet. “This is a dream scenario for this team that’s trying to get this heat shield data,” Huot said on the live broadcast, according to Space.com’s live coverage. “I’m a little over the moon right now. Wow. Lucky number 13.”

Unlike the mass simulators SpaceX flew on Flight 12, these were production Starlink V3 satellites, meant to extend solar arrays and antennas and attempt to link with the broader constellation before reentering minutes later. Getting real hardware through a full deploy sequence on only the second flight of the V3 generation keeps Starship on schedule for the payload work NASA is counting on for future Artemis lunar landings.

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— TESLARATI (@Teslarati) July 25, 2026

The flight also arrives at a moment when SpaceX needed a win. SPCX has traded below its $135 IPO price since mid-July, as Teslarati reported when the mission slipped to Friday, and short interest has climbed to roughly a third of the tradable float. A clean flight will not fix a balance sheet, but it does answer the one question SpaceX absolutely needed answered this week: whether the fixes made after the July 16 abort would hold up under real flight conditions. They did, on both stages, on the first try after the redesign.

SpaceX has not set a target date for Flight 14, though the company has said it wants to push toward an orbital attempt on the next mission. After Friday, that goal looks a lot more within reach.

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Investor's Corner

Tesla short sellers win big after shares fall after earnings

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A red Tesla Roadster driving around a turn
(Credit: Tesla)

Tesla short sellers won big following the company’s massive fall on Wall Street after it reported subpar Earnings on Wednesday.

Tesla short sellers collected about $4.12 billion in single-day profits on Thursday, according to BloombergShares fell as much as 15 percent during Thursday’s session. It closed as one of the worst days for Tesla on Wall Street in the past three years.

Investors sold off the stock after Tesla said it would aggressively direct its spending toward AI and its Optimus robot project. The company had record revenues, which were driven by one of the strongest quarters in terms of vehicle deliveries in company history.

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However, it missed EPS estimates by reporting just $0.33, a far cry from the $0.53 analysts expected.

S3 Partners reported that about 3 percent of Tesla’s outstanding stock is sold short. Managing Director at S3, Ihor Dusaniwsky, provided the short seller’s potential profit, as well as another figure: shorts have likely had paper gains of $8.92 billion this year, as Tesla shares are down 30 percent in 2026.

Tesla (TSLA) Q2 2026 earnings results: miss on EPS, beat on revenue

Tesla has burned short sellers many times in the past, but the company’s latest Earnings Call was a chance for those skeptics to taste some payback. Although the company gave some very transparent information regarding future projects, the rollout of Robotaxi, Optimus, and Semi, many investors took their profits on Thursday.

Notable short sellers like Michael Burry have been transparent about their skepticism around Tesla shares. Burry just revealed three weeks ago that he had opened up a new short on the stock, stating he shorted Tesla shares at $416.22. “Happy it jumped back to this level,” he said in a blog post.

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At the time of publication, Tesla shares were down about 3 percent and the stock was trading at $309.92.

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Investor's Corner

Tesla stock tumbles after earnings, one of its sharpest single-day declines

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Credit: Tesla

Tesla stock (NASDAQ: TSLA) endured one of its sharpest single-day declines in years on July 23, tumbling approximately 14.5 percent and closing near $320 after opening the session around $374. The drop erased more than $140 billion in market value amid heavy trading volume and left the shares at multi-week lows.

The sell-off followed the company’s second-quarter 2026 results, released the previous evening. Tesla reported record revenue of $28.2 billion, up 26 percent year over year, driven by a Q2-record 480,126 vehicle deliveries. Energy storage deployments also rose strongly.

Tesla (TSLA) Q2 2026 earnings results: miss on EPS, beat on revenue

Yet profitability disappointed sharply. Operating income fell 57 percent to $398 million, compressing the operating margin to just 1.4 percent. Non-GAAP earnings per share came in at $0.33, well below the roughly $0.53 analysts had expected. Free cash flow turned negative by $1.1 billion as capital expenditures surged 142 percent to $5.8 billion, largely tied to accelerated spending on artificial intelligence, robotics, and autonomous systems.

The losses on capex were expected, as Tesla said it would be spending heavily in 2026.

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Investors also reacted to lingering uncertainty surrounding key product timelines. During the Earnings Call, management reiterated ambitions for Robotaxi deployment and the Optimus humanoid robot, but offered limited new concrete milestones, renewing questions about execution pace that have long accompanied Tesla’s ambitious roadmap.

The magnitude of the decline places it among Tesla’s more severe one-day percentage losses since its 2010 initial public offering. Historically, the two largest single-day drops (split-adjusted) remain September 8, 2020, when shares fell 21.1 percent amid broader market volatility and valuation concerns, and January 13, 2012, with a 19.3 percent plunge during the company’s early growth struggles.

Other notable declines include an 18.6 percent drop on March 16, 2020, at the onset of pandemic-related market turmoil. Thursday’s move ranks roughly ninth on the all-time list but stands out as the steepest in more than a year.

Despite the short-term pain, Tesla’s long-term trajectory has repeatedly recovered from such volatility. The latest results underscore both the strength of its core automotive and energy businesses and the near-term costs of heavy investment in next-generation technologies.

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