Energy
IER Claims Tesla Powerwall Has 38 Year Payback Time
The Institute for Energy Research reports the payback time for a Tesla PowerWall is 38 years. Tesla disagrees, setting off a war of words.

The Institute for Energy Research (IER) issued a report on January 5 claiming the payback on a Tesla PowerWall is 38 years. The IER is no stranger to those involved in energy policy considerations. The CEO is Robert Bradley, a former director of policy analysis at Enron, where he once wrote speeches for Ken Lay. Lay was the man who many regarded as the person that led the corruption scandal that would ultimately bring down Enron. In a 2003 book, Bradley wrote that carbon dioxide “is not a pollutant but a building block of a living and vibrant biosphere.” That is correct, as far as it goes.
Carbon is indeed a basic building block of all life on Earth. It is flooding the atmosphere with excess carbon that has been trapped in the form of fossil fuels for millions of years that is the problem. Elon Musk made this point with precision when he addressed the Sorbonne in Paris in December. IER is also partially funded by the Koch Brothers reports AutoBlog, citing a story in Mother Jones.
One does not attack Tesla without expecting a vigorous response. The IER report provoked this response from Tesla:
“The report done by the Institute for Energy Research is elementary, at best, and completely misses the value of the Powerwall. For one, IER assumes a fabricated rate structure without citing any source. Transparently, if a consumer were to have a rate structure defined in the article, then the payback calculation is indeed correct.
“However, very few people with this sort of rate structure are interested in Powerwall for financial reasons. They are interested for energy independence, backup security, environmental reasons and tech early adoption, none of which are taken into account.”
Tesla suggested a more accurate way to calculate the payback time for a Powerwall is to focus on regions that have renewable energy policies like feed-in tariffs. That way “the consumer can utilize a Powerwall to consume more of their solar generation and the payback is less than 10 years, while providing the non-economic benefits as well.”
The IER is having none of it, accusing Engadget who first reported on the story of “the most fawning media treatment of any public figure since Pravda covered Stalin.” Which leaves people with a choice — whether to believe a former shill for Ken Lay or the professionally trained engineers who work for Tesla. It shouldn’t be a hard choice to make.
Photo credit: Tesla Motors
Energy
Tesla Energy had a blockbuster 2024

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.
Hit 800k Powerwalls installed worldwide
— Tesla (@Tesla) December 31, 2024
Also:
– Over 100k Powerwalls are now enrolled in VPP programs
– Launched Powerwall 3 in the US, Canada, Puerto Rico, UK, Germany, Italy, Australia & New Zealand
– Megapack hit 22+ GWh in operation across 60+ countries
– Ramped… pic.twitter.com/bE88DpeyTg
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.


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

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.
NEWS: rPlus Energy has just broken ground on a new $362 million @Tesla Megapack battery energy storage system in Utah.
— Sawyer Merritt (@SawyerMerritt) September 24, 2024
This 400 MW solar PV and 400 MW/1,600 MWh battery storage project is one of the largest solar-plus-storage projects under construction in the nation. The entire… pic.twitter.com/ubPOUnPWEf
“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.
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.
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Energy
Tesla Energy loses director who brought Autobidder

Tesla Energy is losing a director who brought Autobidder, a real-time trading and control platform that provides value-based asset management and portfolio optimization, to the company.
Rohan Ma, who has been at Tesla for just under eight years, announced he would depart the company on LinkedIn, aiming to take on a new opportunity elsewhere.
Ma posted:
“After eight years at Tesla, this will be my last week. It was a ride of a lifetime! Today, Tesla Energy is thriving and I can confidently say it’s in the best position it has ever been in to drive impact toward the original mission I signed up for. I’m proud to have contributed over the years to where it is now, and will be cheering the team on from the sidelines as they carry the torch forward and continue to relentlessly solve problems at the frontier of the energy transition.”
Ma started as the Senior Manager of Energy Optimization at Tesla back in November 2016. After four-and-a-half years at the position, he then moved on to a new role as the Director of Energy and Software Optimization. He has been in that role for over three years.
The exit of Ma is the latest in Tesla’s tough year in terms of losing high-level employees.
Earlier this year, as a part of widespread layoffs, Tesla eliminated up to 20 percent of its workforce and people like Rebecca Tinucci, who was the company’s Senior Director of EV Charging.
Tesla also lost Rohan Patel, Vice President of Global Public Policy and Business Development, and Martin Viecha, who was Head of Investor Relations, are just a few notables to depart.
Autobidder
Tesla’s Autobidder platform helps owners and operators make money by autonomously monetizing battery assets. It is a real-time trading and control platform that maximizes revenue according to business objectives and risk preferences.
Tesla Megapack, Autobidder to be deployed in big battery project in Queensland
Autobidder already has hundreds of megawatt-hours under management and continues to scale. It is hosted on Tesla’s secure cloud infrastructure that is engineered to handle large and complex computations.
Without Ma’s expertise, Autobidder would likely not be involved in Tesla’s Energy division at all, and although it is not frequently discussed, it is still a major part of the business’s growth over the past several years.
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