The natural gas pipeline grid in Texas is undergoing a historic transformation as interstate pipelines designed to move gas north and east from the Gulf Coast region are being reversed, enabling Marcellus/Utica gas to flow to LNG export markets in Louisiana and Texas, and via Texas for pipeline export to Mexico. With a history of oil and gas production going back more than 100 years, no region in the world has a more convoluted network of pipelines than Texas. The state can be viewed as a dense “spaghetti bowl” of interconnected interstate and intrastate systems that defies traditional gas market analysis, in part because intrastate pipelines do not post receipts and deliveries on their systems as required by federally regulated interstate pipelines. However, it is possible to assess the dynamics of regional flows and capacities by examining the morass of flow data available from interstate pipelines in the region that connect to the intrastates. To help make sense of this data, RBN has developed a simplified model that facilitates an understanding of Texas natural gas flows and capacities that we call (unsurprisingly since it’s RBN) the Fretboard Model because the region’s interstate pipelines and capacity constraints look (with just a bit of artistic license) very much like a guitar fretboard. In today’s blog, we introduce this model.