The Great Power Secession: Texas Air Permitting and the Data Center B…

Texas data centre developers are building private power grids to bypass ERCOT's grid constraints and new regulatory costs, with the state's air permitting agency now acting as the primary regulator of AI infrastructure siting. Senate Bill 6 (June 2025) made grid connection expensive and gave ERCOT emergency control over large loads, pushing developers toward fully islanded systems that escape grid oversight but still require Clean Air Act compliance. If you're building a data centre in Texas, the cost of connecting to ERCOT just became prohibitive—six-figure study fees, $50k per megawatt security, full grid infrastructure charges. Building your own power island is now the path of least resistance, which means you need air permits faster than your competitor, and Texas's air agency has already shown it will move.