A series of decisions in the last few days has halted or scuttled three high-profile oil- and gas-pipeline projects. The Keystone and Dakota Access oil pipelines—sources of long-running controversy—both suffered legal setbacks that will require additional environmental impact reviews. Separately, the Atlantic Coast natural gas pipeline recently won a case before the US Supreme Court, yet it has now been abandoned by the two energy companies behind it.
The Keystone XL pipeline is meant to carry oil produced in Alberta, Canada, southeast to Nebraska, but it has suffered major delays. The Dakota Access pipeline, on the other hand, has been operational for several years, carrying oil from North Dakota to southern Illinois.
Both were subjected to major protests. The Keystone protests focused on the climate impact of facilitating production in Alberta’s oil sands, where extraction is unusually energy intensive. Dakota Access was strongly opposed by the Standing Rock Sioux Tribe (and others), who feared the consequences of a leak where the pipeline crosses under the Missouri River on the edge of reservation land.