Electric Reliability Council of Texas (ERCOT)
Texas independent power grid operator (HQ Austin TX); operates the electricity grid serving ~90% of Texas — approximately 26 million customers and 85% of the state's electric load. ERCOT is unique among US power grids: it operates as an electrical island with minimal interconnections to neighboring US grids (Eastern and Western Interconnections), meaning Texas cannot easily import power during supply emergencies. Multiple industrial gas ASUs (Air Products, Linde, Air Liquide) are located in Texas to serve the massive Gulf Coast petrochemical, refining, and steel industry cluster. ERCOT's vulnerability was dramatically exposed in February 2021 (Winter Storm Uri): temperatures dropped to record lows, generation units (natural gas, wind, nuclear) froze, and ERCOT came within minutes of a cascading grid failure that could have caused weeks-long blackouts. Multiple Texas ASUs shut down during Uri, causing medical oxygen shortages at Texas hospitals during the same week as the winter storm emergency.