According to Joe Tegtmeyer on X, Tesla has installed approximately 150 Megapacks at Giga Texas to power the 500MW Cortex 2 GPU cluster, which will be dedicated to training the Optimus AI robot. The site, expected to come online in mid-2026, is rapidly expanding its battery storage and energy infrastructure, including the installation of a sixth large transformer and preparations for additional A-frame structures. As reported by Sawyer Merritt, the facility could eventually support up to 250 Megapacks at Cortex 2 and over 400 Megapacks across the entire Giga Texas site, reflecting Tesla's significant investment in AI model training capacity and sustainable energy solutions for large-scale data centers.

According to Joe Tegtmeyer on Twitter, Tesla has delivered new Megapack units to Giga Texas, specifically for the Cortex 2 GPU cluster building that will train the Optimus robot. As reported by Tegtmeyer, 48 out of 62 delivered Megapacks have been installed at Cortex 2 using large-scale Sarens cranes, with capacity for up to three times more units. This expansion is in addition to 140 Megapacks already deployed at two other Giga Texas locations, including one dedicated to the Cortex 1 cluster. The total installation could reach approximately 300 Megapacks, potentially making Giga Texas one of the world's largest battery storage sites. According to Tegtmeyer, the total energy capacity may reach around 1,170 MWh with a total power capacity of about 300 MW, ensuring robust support for Tesla’s AI data centers and Optimus model training operations.

According to Sawyer Merritt on Twitter, Elon Musk has confirmed that xAI has acquired five additional 380MW natural gas turbines, with the first two set for delivery by the end of 2026. This investment will provide the energy required to power an extra cluster of over 600,000 Nvidia GB200-equivalent GPUs. This move highlights xAI's aggressive scaling of its AI infrastructure, positioning the company to support large-scale generative AI applications and advanced machine learning workloads (source: Sawyer Merritt via Twitter, https://x.com/elonmusk/status/2008388245457875336). The substantial energy investment signals a trend toward vertically integrated AI data centers, enabling xAI to secure reliable power supply amid increasing global demand for high-performance AI computing.