Tesla Just Spent $4.73 Billion on Capex. Here's Where Every Dollar Went.

Tesla spent $4.73 billion on capital expenditures (capex) in Q3, more than double the $2.25 billion it spent a year earlier. Despite this significant increase, it was still less than Wall Street's anticipation of roughly $7.5 billion. The company also revised its full-year capital spending forecast from over $25 billion to about $20 billion, which is still more than double the $8.53 billion it spent in 2025. So, where does all this money go? Let's break it down.

Tesla is rapidly expanding its artificial intelligence (AI) computing infrastructure at its Gigafactory near Austin, Texas. This includes training neural networks for full self-driving, Cybercab autonomous vehicles, and Optimus humanoid robots, which demand thousands of specialized processors, servers, networking equipment, cooling systems, and electrical infrastructure.

The company is also investing in Cybercab manufacturing and its robotaxi fleet, which require upfront investments in vehicles, charging infrastructure, and maintenance infrastructure. While the potential payoff is significant, with estimates suggesting a $42.4 billion annual revenue by 2030 and $8.5 billion in annual operating profit, these projections depend on regulatory approvals, technological advancements, and customer adoption.

Tesla is also working on manufacturing capacity for its humanoid robot, Optimus, at its Fremont, California, facility. Production began in Q3, converting space previously used for Model S and Model X vehicles. Ultimately, the company aims to produce up to 1 million robots annually, which could generate significant revenue at a hypothetical selling price of $30,000 per robot.

Additionally, Tesla's energy storage business has seen growth, with 13.7 gigawatt-hours of products deployed in Q3, a 10% increase year-over-year. The company also started production at its new Megafactory in Brookshire, Texas, with a planned annual capacity of 50 gigawatt-hours. These large battery systems assist utilities in storing electricity, stabilizing grids, and providing backup power, creating potential growth opportunities for Tesla.

Tesla's long-term potential remains strong, with potential revenue growth from robotaxis, Optimus, and AI software, as well as expanding energy storage. However, the company's spending on these ventures may be more selective in the coming years, which could delay product commercialization. Despite this, the next few years will determine whether Tesla's investments yield returns substantial enough to justify their cost.