ACP

Natural gas pipeline project permitting sits at the nexus of the debate about the best path toward decarbonization. Industry proponents rightly point out that pipelines can reduce aggregate emissions by displacing much higher burner-tip emissions from coal in power generation. Environmental opposition, though, highlights that a high rate of methane emissions along the gas value chain could undermine those potential improvements. In today’s RBN blog, we consider the net decarbonization impact of new gas pipelines, including the importance of quantifying upstream methane emissions, by looking at a couple of canceled or long-delayed pipeline projects that could make a big difference.

With recent project completions, Northeast takeaway constraints have eased, and regional supply prices have strengthened. But now the slate of planned pipeline expansions is dwindling. Between late-2015 and the end of 2018, midstreamers will have completed 23 takeaway projects out of Appalachia, totaling nearly 14.5 Bcf/d of capacity. That leaves just a handful of projects with little more than 6 Bcf/d of capacity to come, most of them facing stiff environmental opposition, regulatory turmoil and higher costs. Yet, as Appalachian gas production continues to grow, these projects will be critical to keeping the takeaway constraints and depressing supply pricing from returning, at least for a little longer. More than half of the remaining capacity would come from two competing projects — Dominion Energy’s Atlantic Coast Pipeline (ACP) and EQM Midstream Partners’ Mountain Valley Pipeline (MVP) — both greenfield efforts tied to growing gas-fired power generation demand along the Mid- and South-Atlantic seaboard and both embattled by a barrage of legal challenges. In today’s blog, we provide an update on the Atlantic Coast and Mountain Valley projects, including the latest status and timing.