Tesla's energy storage division, leveraged by the commercial success of the Megapack battery system, has come to play a significant role in generating revenue and profitability for Elon Musk's company.
The company's solution, aimed at large-scale power plants, is designed to stabilize the electrical grid, prevent power outages, and integrate renewable energy sources such as wind and solar.
The performance of equipment aimed at energy utilities and large consumers has transformed the energy division into one of Tesla's main growth drivers, alongside its traditional electric vehicle business.
The consolidated figures for the end of fiscal year 2025 show that the energy generation and storage area has assumed an unprecedented leading role within the company. Revenue from the energy generation and storage division reached US$12,77 billion last year, a 27% increase compared to the US$10,09 billion recorded in 2024.
The result was primarily driven by Megapack, whose installations reached a record 46,7 GWh in 2025, a 49% increase over the previous year. The performance of the energy division occurred precisely at a time of maturation in the global electric vehicle market, reinforcing the gradual shift in Tesla's business profile.
Although automobile manufacturing continues to account for the majority of the company's revenue, energy storage solutions have become an increasingly significant part of its revenue generation.
Profitability
More than just growing in revenue, the energy sector began generating proportionally higher returns than those obtained from the automotive activity. According to data presented by the company, the gross margin of the energy division remained between 29,8% and 31,4% throughout 2025.
In the electric vehicle segment, on the other hand, the margin fell to between 15% and 17%, practically half of what was observed in operations related to energy storage.
In practice, this means that every dollar earned from the sale of batteries and energy solutions generated a significantly higher return than that obtained from the sale of automobiles.
With consolidated gross profit of US$17,09 billion in 2025, it is estimated that approximately US$3,8 billion came from the energy division, equivalent to about 22% of total gross profit — a share close to a quarter of the company's profit.
IA
Regarding Megapack, the growth of artificial intelligence and the construction of large data centers has increased the need for solutions capable of ensuring stability and flexibility in electrical grids, expanding the demand for large-scale storage systems.
Another factor cited for the business's growth was the start of operations at the Shanghai Megafactory, inaugurated in February 2025 and dedicated exclusively to the manufacture of this equipment. The unit allowed for increased production scale and reduced industrial costs through the use of lithium iron phosphate (LFP) batteries, helping to maintain high margins in the energy division.
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