FERC last week granted approval for a pair of natural gas pipeline projects, including Enbridge Inc.’s East Tennessee Natural Gas LLC (ETNG) and Williams’ Transcontinental Gas Pipe Line Company Co. LLC, aka Transco.

ETNG’s System Alignment (SA) Program is designed to improve reliability in response to shifts in customer demand that have created imbalances on the system. ETNG plans to add two electric compressor stations and pipeline capacity in North Carolina, Tennessee and Virginia.

The SA program, announced in 2022, is expected to begin construction in 2025 and ramp up between mid 2026 and late 2027, according to an ETNG timeline. ETNG plans to add a 24-inch diameter pipe next to an existing 16-inch diameter pipe in Tennessee and replace an eight-inch pipe with a 24-inch...