Developed by the American company Terabase Energy (based in Berkeley, California), Terafab is the first automated and robotic “field factory” system dedicated to the assembly and installation of photovoltaic modules and solar trackers on large utility-scale projects. How does Terafab work? Unlike traditional methods where human teams manually handle 30–50 kg panels and metal structures, Terafab transforms the jobsite into a true off-site industrial assembly line located directly on the project site:
Robotic arms lift and precisely position panels An automated logistics system continuously feeds the production line A digital platform (digital twin + management software) coordinates everything in real time The system operates 24/7, with modularity allowing multiple parallel units to be deployed
Announced results: productivity multiplied by 2 compared to traditional methods, a significant reduction in installation costs, and above all a near-total elimination of physical risks associated with heavy manual lifting. Key milestones and recognitions
May 2023: Official launch and concept presentation August 2023: First pilot tests 2023: First successful commercial deployment on a portion (17 MW) of the White Wing Ranch project (225 MW) in Arizona, in partnership with Leeward Renewable Energy and RES 2024: Terafab wins gold at the Edison Awards in the “Resilient & Sustainable Solutions” category 2025–2026: Rollout of Terafab 2.0 (currently in deployment), with pilot and commercial projects of 50 MW and larger now considered the most cost-effective
Terabase Energy emphasizes: the larger the project (> 50–100 MW), the more attractive the return on investment becomes for system mobilization and transport costs. A very different Terafab: the Tesla version Not to be confused with Terabase’s Terafab, Elon Musk has frequently used the term Tesla TeraFab since late 2025 to describe an ultra-ambitious project: an internal mega semiconductor fabrication facility capable of producing logic chips, memory, and advanced packaging at colossal scale (potentially 1 million wafers per month). This TeraFab aims to massively supply Tesla’s AI compute needs (Dojo, FSD, Optimus, robotaxi…) and reduce reliance on TSMC, Samsung, or Intel. Announced as “much larger than a Gigafactory,” the project remains at the strategic vision stage (as of 2026), with no firm construction date or confirmed location yet. Why Terafab (solar) is strategic in 2026? With global targets of 5–10 TW of installed solar capacity by 2035–2040, the ability to build power plants quickly and at low cost is becoming as critical a bottleneck as panel manufacturing itself. Terafab directly addresses this challenge by industrializing solar construction. If version 2.0 delivers on its promises and the business model scales, we could see “Terafab farms” multiplying across large flat sites worldwide by the end of the decade. A small step for a panel-placing robot… but potentially a giant leap for terawatt-scale solar.