Energy
Why Tesla’s microgrid project is life changing for Ta’u’s island community
Tesla’s subsidiary, SolarCity, is at the end of a one-year solar energy microgrid project on the American Samoa island of Ta’u that, at 1.4 megawatts, can cover “nearly 100%” of its 600 residents’ electrical needs. Its benefits may be life changing for residents of Ta’u.
Ta’u is a rectangular island 10 km. long and 5 km. wide. In the distant geologic past, the south side of Ta’u collapsed, leaving dramatic 500 km. high cliffs that rise directly from the southern sea. Craters punctuate the island’s wild, thickly forested interior, known for its steep slopes and gullies. Terrain and bush can change quickly, and most of the upland area is inaccessible. American Samoa was first visited by European explorers in the 18th century, but its islands have been inhabited for over 3000 years. Today, at about 340 persons per square km., American Samoa is the second most densely populated South Pacific entity, after Tuvalu.
The island’s residents have acquired power to date largely through generators fueled by diesel. Diesel in itself is made from chemicals including sulfates, ammonium, nitrates, elemental carbon, condensed organic compounds, and even carcinogenic compounds rich in heavy metals such as arsenic, selenium, cadmium and zinc. Diesel exhaust poses major health hazards, contributes to climate change, is costly to ship, and can lead to frequent temporary blackouts. With a dramatic decrease on diesel reliance, Ta’u, through the SolarCity renewable microgrid, will experience valuable community life enhancements that can increase local control and community independence.
Grid stability in a remote location
Energy efficiency is an important component of a renewable microgrid transition. Energy storage is key to renewable island and remote community microgrids. The Ta’u integrated microgrid –- 1.4 megawatts of solar power and 6 megawatt hours of battery storage from 60 Tesla Powerpack, alongside smart controls to enable load shifting— will become an important component of the Ta’u community’s transition to energy independence.
Maintaining grid stability with renewable integration has proved challenging in many other remote island cases in which energy reliance has shifted to a microgrid. SolarCity will likely use a phased integration approach that will initially bring a small amount of renewable technologies online, as it works to balance the system, and then continue to step up their renewable penetration by integrating more solar resources alongside energy storage and advanced controls. For example, on King Island, Australia, Hydro Tasmania has overcome many renewable integration challenges to incorporate more renewable resources into the system. Simon Gamble recalls, “We started adding renewables 18 or 19 years ago, and the challenges have been technical. We had to solve the problems we uncovered as we went.”
Tesla’s Powerpack system will allow the island to use stored solar energy at night, meaning renewable energy is available for use around the clock. Procuring and transporting new technologies and equipment, which has been an issue with other remote island locations that have integrated a renewable energy microgrid, may not present as many challenges for Ta’u, due to the SolarCity involvement. Often, only one or two operators live nearby, so if major technical issues arise, teams must fly in to address the problems. Having SolarCity as a partner can diminish such technical issues on Ta’u.
How a SolarCity microgrid can alter traditional microgrid instability
Although some renewable systems have found success, other communities face challenges transitioning from a fossil fuel reliance to a microgrid. A SolarCity microgrid has the capacity to overcome these challenges due to the influence and reliability of Tesla Energy. Microgrid systems foster community resiliency and stability. Power electronics and control systems enable a more stable grid through better controls. At the same time, relying more on local resources and less on imported diesel increases overall resiliency for the Ta’u community.
Transitioning to renewable microgrids can reduce costs. Research indicates that relying on more diversely and renewably powered microgrids has led to reduced diesel usage, electricity prices, and operating costs. Creating a project like the SolarCity microgrid on Ta’u, with the requisite business plan to lower overall costs and attract investment, is a difficult and lengthy task. However, it has clearly been made easier with SolarCity’s deep understanding of inherent necessary technologies, processes, and pitfalls.
Protecting the Ta’u culture through energy independence
Fa’a Samoa or the Samoan Way is the foundation of Samoan society, culture, and heritage. Fa’a Samoa customs and culture are over 3000 years old and have changed very little over this period. The Fa’a is tenaciously defended by those who have chosen to remain in their home villages rather than to emigrate to the U.S. Fa’a culture and customs are based around the mutual respect given to elders, the church, visitors, and the extended family. The SolarCity grid will enhance the Fa’s or Samoan Way and reinforce the foundation of Samoan society, culture, and heritage.
SolarCity, alongside American Samoan and U.S. authorities, including the Department of Interior, has provided the upfront costs of designing, delivering, installing, and maintaining the solar microgrid. Their customers on Ta’u will pay a fixed monthly fee for clean solar power and start realizing cost savings from day one without the hassle of owning and maintaining their own power system. Removing the hazards of power intermittency will offer a tremendous difference in the lives of Ta’u residents.
“I recall a time they weren’t able to get the boat out here for two months,” said Keith Ahsoon, a local resident whose family owns one of the food stores on the island. “We rely on that boat for everything, including importing diesel for the generators for all of our electricity. Once diesel gets low, we try to save it by using it only for mornings and afternoons. Water systems here also use pumps, everyone in the village uses and depends on that. It’s hard to live not knowing what’s going to happen. I remember growing up using candlelight. And now, in 2016, we were still experiencing the same problems.”
Sources: American Samoa, Renewable Microgrids
As Tesla owners, solar advocates and obvious believers in the future of sustainable energy, we’ve partnered with a service for estimating solar costs based on one’s location and energy requirement. Please consider supporting our solar-focused affiliate partner and fan to Teslarati by getting a cost estimate.
Energy
Tesla Semi factory is getting a celebration nobody expected
Tesla will inaugurate its Nevada Semi factory September 24, five months after production quietly began ramping.
Tesla says it will officially inaugurate its new Semi factory in Nevada next month. The Tesla Semi account posted the announcement on X, sharing a graphic titled “Semi Rollout” with a date of September 24. No further details were given about the format of the event or who would attend.
While Tesla’s dedicated Semi plant in Sparks, adjacent to Gigafactory Nevada, opened back in April, with the first trucks rolling off the high volume line on April 29, the timing for the factory inauguration comes at a surprise. The ribbon cutting event five months into production is a break from how Tesla has usually handled its other factories, where the first truck or car off the line typically served as the milestone moment.
Inauguration of new Semi factory in Nevada next month pic.twitter.com/a8kAlxrOOn
— Tesla Semi (@tesla_semi) August 24, 2026
The 1.7 million square foot factory was built as part of a $3.6 billion expansion Tesla announced in early 2023, and it shares a site with the battery cell lines that feed the Semi’s structural pack, a decision meant to remove the supply bottleneck that delayed the truck for years. The plant is designed for 50,000 trucks a year at full ramp. Semi program director Dan Priestley has said production “is now ramping” rather than claiming it has reached scale.
Nine years passed between the Semi’s 2017 unveiling and this stage of production, with the truck slipping from an original 2019 target through hand built pilot units for PepsiCo and a slow build out of the Nevada plant. An inauguration event now gives Tesla a stage to talk up that ramp and reset expectations for how many trucks it can begin delivering at scale.
The September date also lines up with the Semi’s next milestone. Tesla confirmed the truck is heading to Europe with a full unveiling at the IAA Transportation trade show in Hannover, Germany, running September 15 through 20. Between the Nevada event and the Hannover reveal, Tesla has roughly a week and a half in September to make the case that the Semi is now a truck being built and sold on two continents rather than tested in a handful of fleets.
Tesla Energy has introduced the Powerwall Lease in conjunction with Tesla Electric, making the service available in Texas. This new option delivers whole-home backup power using two Powerwall units for a net monthly cost of $35 after credits, accompanied by a low fixed electricity rate.
Under the lease terms, customers pay a one-time order fee of $100. The base lease payment for the two Powerwalls is approximately $122 per month during the first year, subject to a 3 percent annual escalator thereafter. Enrollment in a qualifying Tesla Electric Backup plan or Virtual Power Plant plan provides an $87 monthly credit.
Powerwall Lease is now available with Tesla Electric in Texas
Whole-home backup for $35/month, with a low fixed electricity rate
– Two Powerwalls, $0 installation
– Storm Watch outage protection
– One app to manage it all pic.twitter.com/oTzqc6K3aF— Tesla Energy (@teslaenergy) August 13, 2026
This credit lowers the effective cost to roughly $35 per month plus applicable tax.
Installation of the standard system carries no additional charge. The package features Storm Watch for outage protection and allows complete management through a single Tesla application. The system supplies continuous whole-home backup capability.
The Powerwall system enables households to maintain electricity during severe storms that disrupt the utility grid. When outages occur, the batteries automatically provide seamless backup power to the home.
Tesla announces 100k Powerwalls are participating in Virtual Power Plants
Tesla Storm Watch monitors weather forecasts and ensures the units are fully charged ahead of anticipated severe weather events so that power remains available throughout the disruption, keeping lights, refrigeration, and other essential systems operating without interruption.
Availability is restricted to select Texas locations where retail electric choice exists. Participants must lease exactly two Powerwall units and maintain continuous enrollment with Tesla Electric. Solar panels cannot be included under this particular lease arrangement.
The monthly credit activates automatically once the system is installed, receives permission to operate, and enrollment is confirmed. To retain the credit, customers are required to stay enrolled in Tesla Electric and fulfill all program conditions.
Nonstandard installations that involve electrical upgrades or special permitting may lead to extra expenses and might impact eligibility for the credit, so be sure to check with either your installer or Tesla to ensure you will still qualify.
Elon Musk
Inside Tesla’s secretive $10 Billion “Project Crystal Sun” filing
Tesla filed for a $10.1 billion Fort Bend solar factory, but the site isn’t confirmed.
Tesla has filed paperwork in Texas for a second massive manufacturing project in the same week it locked down its chip fabrication site, this time for a $10.1 billion solar cell plant in Fort Bend County. The filing, submitted July 22 under the state’s Jobs, Energy, Technology and Innovation Act and first surfaced by Sawyer Merritt on X, lists an internal project name of “Project Crystal Sun” and targets a site off FM 762 and FM 1994 near Richmond, about 40 minutes outside Houston.
Tesla is planning to build a $10.1 billion vertically integrated solar cell manufacturing facility in Fort Bend County, Texas, about 40 minutes from Houston, according to a new public application filing.
Tesla is aiming to start construction this year and finish in 2028, with… pic.twitter.com/f3HIK5HGST
— Sawyer Merritt (@SawyerMerritt) August 7, 2026
The application, prepared by Kroll Tax Services on Tesla’s behalf, spans five parcels totaling roughly 3,000 acres within the Lamar Consolidated Independent School District. Tesla wants a 10 year property tax limitation in exchange for the investment, split as $1.5 billion in real property and $8.6 billion in equipment and personal property. The company projects 9,712 permanent jobs once the plant reaches full operation, with 1,147 peak construction jobs during a build window running from this year through 2028 and commercial operations targeted for the first quarter of 2029.
Tesla is not fully committed to Fort Bend County yet. The filing states the company is weighing the site against an unnamed out of state alternative, and frames the tax abatement as what would make Texas competitive against that option. If the district and county decline the incentive, Tesla says it may build elsewhere.
Tesla Megapack Megafactory in Texas advances with major property sale
The plant would handle the full solar cell production chain in one facility, according to the filing, covering wafer and ingot manufacturing, coating, metallization and printing lines, cell testing, automated material handling and cleanroom infrastructure. That scope points to Tesla vertically integrating a part of its supply chain it currently sources largely from overseas partners, mirroring the approach behind its expanding Megapack production in Brookshire, Texas, where Tesla has already built out two buildings for its grid battery business.
The timing lines up closely with Tesla and SpaceX’s other big Texas commitment this month. SpaceX confirmed its Terafab chip factory would land in Grimes County days before this filing surfaced, with construction on that $16.8 billion project starting almost immediately after local officials met with residents. Terafab is meant to produce the AI chips running Tesla’s Optimus robots and Full Self-Driving software, while a solar cell plant would feed a different part of the business, the panels and storage systems Tesla sells to homeowners, businesses and utilities, and increasingly needs to power its own data centers.
Musk has talked about building domestic solar manufacturing capacity before, tying it to the amount of power Tesla’s AI ambitions will require.
Tesla crosses major Unsupervised Self-Driving milestone
Tesla Robotaxi will be a 24/7 service: here’s when
