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Tesla is powering an entire island with solar panels and batteries

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The island of Ta’u in American Samoa, which has acquired power largely through diesel generators, is now nearing a year-long completion of a microgrid of Tesla Energy solar panels and batteries. The result will be a supply of nearly 100 percent of power needs for Ta’u’s 600 residents and a showcase for the recent Tesla-SolarCity merger.

Many island communities rely on diesel to maintain an electrical grid. But diesel is a fossil fuel that contributes to climate change, is costly to ship, and can lead to frequent temporary blackouts. The whole island has been outfitted with a microgrid comprised of 5,328 solar panels from SolarCity and Tesla, along with 60 Tesla Powerpack units for energy storage. The system will allow the island to stay fully powered for three full days without sunlight, and its capacity will recharge fully in seven hours.

 

The project falls under the SolarCity subsidiary; Tesla completed its $2.6 billion acquisition of SolarCity last Friday. Even in light of harsh criticism from financial and technology industry insiders, Tesla CEO Elon Musk has consistently described the acquisition as “blindingly obvious” — a necessary step in his so-called “Master Plan” to integrate clean energy generation and storage.

The benefits of the Ta’u microgrid, as revealed on a SolarCity blog post, may be life changing for its residents. The local hospital, high school, and elementary schools, fire and police stations, and local businesses may no longer need to worry about outages or rationing. But the biggest advantage is cost: Tau’s microgrid with more affordable solar energy will optimize system performance and maximize savings. The project was funded by American Samoan and U.S. authorities, including the Department of Interior.

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“This project will help lessen the carbon footprint of the world,” local resident Keith Ahsoon said. “Living on an island, you experience global warming firsthand. Beach erosions and other noticeable changes are a part of life here. It’s a serious problem, and this project will hopefully set a good example for everyone else to follow.”
 

Carolyn Fortuna is a writer and researcher with a Ph.D. in education from the University of Rhode Island. She brings a social justice perspective to environmental issues. Please follow me on Twitter and Facebook and Google+

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Tesla Energy shines with substantial YoY growth in deployments

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Credit: Tesla Megapack

Tesla Energy shined in what was a weak delivery report for the first quarter, as the company’s frequently-forgotten battery storage products performed extraordinarily well.

Tesla reported its Q1 production, delivery, and deployment figures for the first quarter of the year, and while many were less-than-excited about the automotive side, the Energy division performed well with 10.4 GWh of energy storage products deployed during the first quarter.

This was a 156 percent increase year-over-year and the company’s second-best quarter in terms of energy deployments to date. Only Q4 2024 was better, as 11 GWh was recorded.

Tesla Energy is frequently forgotten and not talked about enough. The company has continued to deploy massive energy storage projects across the globe, and as it recorded 31.5 GWh of deployments last year, 2025 is already looking as if it will be a record-setting year if it continues at this pace.

Tesla Megapacks to back one of Europe’s largest energy storage sites

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Although Energy performed well, many investors are privy to that of the automotive division’s performance, which is where some concern lies. Tesla had a weak quarter for deliveries, missing Wall Street estimates by a considerable margin.

There are two very likely reasons as to why this happened: the first is Tesla’s switchover to the new Model Y at its production facilities across the globe. Tesla said it lost “several weeks” of production due to the updating of manufacturing lines as it rolled out a new version of its all-electric crossover.

Secondly, Tesla could be facing some pressure from pushback against the brand, which is what many analysts will say. Despite the publicity of attacks on Tesla drivers and their vehicles, as well as the company’s showrooms, it would be safe to assume that we will have a better picture painted of what the issue is in Q2 after the company reports numbers in July.

New Tesla Model Y was a best-seller in China in March 2025

If Tesla is still struggling with lackluster delivery figures in Q2 after the Model Y is ramped and deliveries are more predictable and consistent, we could see where the argument for brand damage is legitimate. However, we are more prone to believe the Model Y, which accounts for most of Tesla’s sales, and its production ramp is likely the cause for what happened in Q1.

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In what was a relatively bleak quarter, Tesla Energy still shines as the bright spot for the quarter.

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Energy

Tesla lands in Texas for latest Megapack production facility

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(Credit: Tesla)

Tesla has chosen the location of its latest manufacturing project, a facility that will churn out the Megapack, a large-scale energy storage system for solar energy projects. It has chosen Waller County, Texas, as the location of the new plant, according to a Commissioners Court meeting that occurred on Wednesday, March 5.

Around midday, members of the Waller County Commissioners Court approved a tax abatement agreement that will bring Tesla to its area, along with an estimated 1,500 jobs. The plant will be located at the Empire West Industrial Park in the Brookshire part of town.

Brookshire also plans to consider a tax abatement for Tesla at its meeting next Thursday.

The project will see a one million square-foot building make way for Tesla to build Megapack battery storage units, according to Covering Katy News, which first reported on the company’s intention to build a plant for its energy product.

CEO Elon Musk confirmed on the company’s Q4 2024 Earnings Call in late January that it had officially started building its third Megapack plant, but did not disclose any location:

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“So, we have our second factory, which is in Shanghai, that’s starting operation, and we’re building a third factory. So, we’re trying to ramp output of the stationary battery storage as quickly as possible.”

Tesla plans third Megafactory after breaking energy records in 2024

The Megapack has been a high-demand item as more energy storage projects have started developing. Across the globe, regions are looking for ways to avert the loss of power in the event of a natural disaster or simple power outage.

This is where Megapack comes in, as it stores energy and keeps the lights on when the main grid is unable to provide electricity.

Vince Yokom of the Waller County Economic Development Partnership, commented on Tesla’s planned Megapack facility:

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“I want to thank Tesla for investing in Waller County and Brookshire. This will be a state-of-the-art manufacturing facility for their Megapack product. It is a powerful battery unit that provides energy storage and support to help stabilize the grid and prevent outages.”

Tesla has had a lease on the building where it will manufacture the Megapacks since October 2021. However, it was occupied by a third-party logistics company that handled the company’s car parts.

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Energy

Tesla Energy had a blockbuster 2024

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Credit: Tesla

Tesla Energy has become the undisputed dark horse of the electric vehicle maker. This was highlighted by Tesla Energy’s growing role in the company’s overall operations in the past quarters. 

And as per Tesla’s year-end milestone posts on X, Tesla Energy had a blockbuster 2024.

Tesla Energy’s 2024 milestones:

  • As per Tesla on its official social media account on X, the company has hit over 800,000 Powerwalls installed worldwide. 
  • From this number, over 100,000 Powerwall batteries have been enrolled in virtual power plant (VPP) programs.
  • The Powerwall 3 has officially been launched in the United States, Canada, Puerto Rico, the U.K., Germany, Italy, Australia, and New Zealand.
  • The Tesla Megapack hit over 22 GWh in operation across more than 60 countries across the globe.
  • The Lathrop Megafactory, which produces the Megapack, has been ramped to 40 GWh per year. 
  • The Lathrop Megafactory has also produced its 10,000th Megapack battery.
  • The Shanghai Megafactory was completed in just seven months, and it is ready to start Megapack production in Q1 2025.

Powerwall owners’ 2024 impact:

  • As per Tesla Energy, Powerwall owners generated a total of 4.5 TWh of solar energy globally in 2024. This was equivalent to powering a Model 3 for more than 17 billion miles.
  • A total of 1.1 TWh of energy was stored in Powerwalls in 2024. This protected homes from over 5.8 million outages during the year.
  • Tesla’s Storm Watch feature for Powerwall batteries covered 2.8 million severe weather events over the year.
  • Powerwall owners saw collective savings of over $800 million on utility bills.
  • Virtual Power Plants contributed over 2.2 GWh of power to the grid. This reduced the need for 2,200 metric tons of fossil fuel peaker plant emissions.

Don’t hesitate to contact us with news tips. Just send a message to simon@teslarati.com to give us a heads up.

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