An exploration site at ConocoPhillips’ Willow prospect is seen from the air in the 2019 winter season. Willow is located in the National Petroleum Reserve in Alaska. (Photo by Judy Patrick/provided by ConocoPhillips Alaska Inc.)

An exploration site at ConocoPhillips’ Willow prospect is seen from the air in the 2019 winter season. Willow is located in the National Petroleum Reserve in Alaska. (Photo by Judy Patrick/provided by ConocoPhillips Alaska Inc.)

Environmental groups ask federal appeals court to halt Willow oil project

Two coalitions of environmental groups, having lost their case in an Alaska courthouse, are asking the 9th U.S. Circuit Court of Appeals to issue an order that would halt work on Alaska’s largest oil development in decades.

On Tuesday, the coalitions filed separate appeals with the 9th Circuit. They argue that Judge Sharon Gleason made a mistake when she allowed work to proceed on the Willow project.

The groups, which include the Center for Biological Diversity and the Sovereign Inupiat for a Living Arctic, claimed in a pair of lawsuits filed last year that the federal government acted erroneously when it approved permits for Willow, which is expected to produce as much as 180,000 barrels of oil per day at peak production.

Gleason ruled against the plaintiffs, who said at the time that they planned to appeal.

ConocoPhillips, the oil company developing Willow, has already begun a massive winter construction effort, and a negative ruling by the 9th Circuit could impact its schedule. The state of Alaska, federal government and the North Slope Borough stand to gain billions of dollars in tax revenue if Willow proceeds to full production.

Plaintiffs in the appeal say that if Willow is allowed to proceed, it will have significant effects on global climate due to resulting greenhouse gas emissions.

The 9th Circuit has not yet set a timeline to hear the appeal.

• James Brooks is a longtime Alaska reporter, having previously worked at the Anchorage Daily News, Juneau Empire, Kodiak Mirror and Fairbanks Daily News-Miner. This article originally appeared online at alaskabeacon.com. Alaska Beacon, an affiliate of States Newsroom, is an independent, nonpartisan news organization focused on connecting Alaskans to their state government.

More in News

The northern lights are seen from the North Douglas launch ramp late Monday, Jan. 19. A magnetic storm caused unusually bright northern lights Monday evening and into Tuesday morning. (Chloe Anderson/Juneau Empire)
Rare geomagnetic storm causes powerful aurora display in Juneau

The northern lights were on full display Monday evening.

Seven storytellers will each share seven minute-long stories, at the Kunéix Hidi Northern Light United Church at 7 p.m. Tuesday, Feb. 10, benefitting the Southeast Alaska Food Bank. (Photo by Bogomil Mihaylov on Unsplash)
Mudrooms returns to Juneau’s Kunéix Hidi Northern Light United Church

Seven storytellers will present at 7 p.m. on Feb. 10.

The Alaska State Capitol building stands on Tuesday, Jan. 20, 2025. (Mari Kanagy/Juneau Empire)
Rep. Story introduces bill aiming to stabilize education funding

House Bill 261 would change how schools rely on student counts.

Weekly events guide: Juneau community calendar for Feb. 9 – 15
Juneau Community Calendar

Weekly events guide: Feb. 9 – 15

teaser
Juneau activists ask Murkowski to take action against ICE

A small group of protesters attended a rally and discussion on Wednesday.

A female brown bear and her cub are pictured near Pack Creek on Admiralty Island on July 19, 2024. (Chloe Anderson for the Juneau Empire)
Pack Creek permits for bear viewing area available now

Visitors are welcome from April 1 to Sept. 30.

Cars pass down Egan Drive near the Fred Meyer intersection Thursday morning. (Clarise Larson / Juneau Empire file photo)
Safety changes planned for Fred Meyer intersection

DOTPF meeting set for Feb. 18 changes to Egan Drive and Yandukin intersection.

Herbert River and Herbert Glacier are pictured on Nov. 16, 2025. (Mari Kanagy / Juneau Empire)
Forest Service drops Herbert Glacier cabin plans, proposes trail reroute and scenic overlook instead

The Tongass National Forest has proposed shelving long-discussed plans to build a… Continue reading

A tsunami is not expected after a 4.4-magnitude earthquake northwest of Anchorage Wednesday, Feb. 4, 2026. (U.S. Geological Survey)
No tsunami expected after 4.4-magnitude earthquake in Alaska

U.S. Geological Survey says 179 people reported feeling the earthquake.

Most Read