The Permian Basin was second to Appalachia in terms of production last year, accounting for 23% of marketed natural gas. But the region saw the highest growth among the three main regions, jumping 11% or 2.7 Bcf per day to average 27.7 Bcf per day. Analysts noted that the growth in natural gas production is primarily the result of associated gas produced during oil production. West Texas Intermediate averaged $65 a barrel in 2025, down from $77 in 2024 but sufficient to support oil-directed drilling in the Permian region. Additionally, the average gas-to-oil ratio, which has been steadily increasing in the Permian, contributed to natural gas growth.