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Tesla’s upgraded big battery at Hornsdale exhibits record performance in final tests

Tesla's 100 MW/129 MWh Powerpack system dubbed as the 'World's largest battery' in Jamestown, Australia. (Credit: Tesla)

Published

5 years ago

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Tesla’s big battery in South Australia, the Hornsdale Power Reserve, recently hit another milestone as it entered the final testing phase of its recent expansion. With such performance, it appears that Tesla’s Powerpack farm, currently one of the world’s largest battery installations, will still be providing the region with industry-leading renewable services for the foreseeable future. 

The Hornsdale Power Reserve has been impressive from the time it was installed. Constructed in about 100 days partly due to a bet between Tesla CEO Elon Musk and Atlassian co-founder Mike Cannon-Brookes, the massive 100MW/129MWh battery installation promptly played a key part in providing frequency control and emergency back-up energy services to South Australia’s grid. 

The battery farm’s performance has been so impressive that it was expanded to a capacity of 150MW/194MWh. With this expansion comes new services like synthetic inertia, a function that has long been dominated by fossil fuel-powered generators. Currently, the expanded battery installation is going through testing that allows the system to progress through a number of “hold points.” And so far, recent observations indicate that the upgraded battery is poised to be even more disruptive once it’s fully operational. 

During its tests on Tuesday, for example, the upgraded Hornsdale battery performed a rapid 270MW flip by charging at 120MW and discharging at 150MW. As noted in a Renew Economy report, the battery installation appears to have performed the flip on several different occasions, and at least one of them had an impact on the wholesale price of electricity in the area. During one such flip, the expanded Tesla Powerpack farm pushed down power prices to just above AU$8 per MW. 

“Those 270MW flips – from the level of discharge to the level of charge – are likely a world record in both speed and extent of the change. And it’s this flexibility of the big batteries such as Hornsdale, and others at Dalrymple North, Lake Bonney, Gannawarra and Ballarat, that is particularly attractive to project owners and valuable to AEMO, the market operator,” the Australian publication noted. 

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The Australian Energy Market Operator has lauded the Hornsdale big battery on several occasions for its speed, accuracy, and flexibility. Its undeniable breakthroughs in the energy sector have inspired what could very well be described as a battery storage movement in Australia. Apart from the expansion of the Hornsdale Power Reserve, Neoen Australia is also expected to construct a massive 600MW/1200MWh system in Victoria. The Victoria project will dwarf even the upgraded Hornsdale battery when it is completed, and it is poised to utilize Tesla Energy’s flagship energy storage product, the Megapack. 

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Simon is an experienced automotive reporter with a passion for electric cars and clean energy. Fascinated by the world envisioned by Elon Musk, he hopes to make it to Mars (at least as a tourist) someday. For stories or tips--or even to just say a simple hello--send a message to his email, simon@teslarati.com or his handle on X, @ResidentSponge.

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Energy

Tesla lands in Texas for latest Megapack production facility

Published

3 weeks ago

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March 5, 2025

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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:

“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:

“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

Published

3 months ago

on

December 31, 2024

By

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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Energy

Utah’s rPlus Energies breaks ground on Tesla Megapack battery system

Published

6 months ago

on

September 24, 2024

By

Credit: Tesla

Utah-based rPlus Energies recently held the groundbreaking ceremony for the Green River Energy Center, a 400 MW solar PV and 400 MW/1,600 MWh battery storage project in Eastern Utah. Tesla Megapacks will be used as the upcoming facility’s battery storage solution. 

At 400 MW/1,600 MWh, the Green River Energy Center is expected to become one of the largest solar-plus-storage projects under development in the United States. Once operational, the facility would supply power to PacifiCorp under a power purchase agreement, as noted in a press release. 

Utah Gov. Spencer Cox shared his excitement for the project during the Green River Energy Center’s groundbreaking event. As per the Utah Governor, the solar and battery storage system represents a notable step forward for the state’s sustainable energy efforts. 

“This project is being built in rural Utah, by rural Utahns, and for all of Utah. When rural Utah thrives, the entire state prospers. Today, we’re not just breaking ground—we’re building a future of affordable, abundant energy in Utah,” the official noted. 

The Green River Energy Center secured over $1 billion in construction debt financing earlier this year. The facility is also expected to create about 500 jobs, many of which will be filled by local workers. With this in mind, the solar and battery farm would likely prove to be a boost to Emery County’s economy, enhancing tax revenue, strengthening public services, and offering long-term employment opportunities for the area’s residents. 

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Sundt Construction will serve as the project’s contractor, EliTe Solar will supply the solar modules, and Tesla will provide the battery storage system for the project. Luigi Resta, President and CEO of rPlus Energies, noted that the Green River Energy Center is special because of the entities that have worked together to make the facility a reality. 

“It’s the partners that make this project special, that have made this monumental project possible. From our equipment providers to the onsite talent, and the support of the local and regional community, we owe this project’s success to each of you,” he stated. 

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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