Abigail Dillen

President

Abigail Dillen, President of Earthjustice, stands facing the viewer with a kind expression, in a brightly lit, verdant tropical landscape. She's wearing a black dress with simple pearl and gold circle necklackes.

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MT, NY, CA

Abigail Dillen

President

Media Inquiries

Lauren Wollack
Vice President, Public Affairs and Communications
lwollack@earthjustice.org

Abigail Dillen is the president of Earthjustice, leading the organization’s staff, board, and supporters to advance our mission of using the courts to protect our environment and people’s health. She is based in San Francisco, California.

Before stepping into her current role, Abigail served as the Vice President of Litigation for Climate & Energy, heading Earthjustice’s litigation and legal advocacy to achieve the essential shift from fossil fuels to 100% clean energy.

Prior to that, Abigail was managing attorney of Earthjustice’s Coal Program, which has played a central role in forcing the overdue retirement of coal-fired power plants around the country.

Abigail has litigated precedent-setting cases that have held polluters accountable and cleared the way for clean energy nationally.

These wins include:

  • Requiring the U.S. Environmental Protection Agency to promulgate first-ever standards to govern disposal of coal ash and limit the wastewater discharge of toxic pollutants from coal-fired power plants;
  • Blocking a $2 billion transmission project to transport dirty coal energy from the Ohio Valley to East Coast cities;
  • Blocking permits for new coal-fired power plants; and
  • Cutting off federal funding of new coal plants.

Abigail came to Earthjustice in 2000. Working first out of our Northern Rockies Office in Bozeman, Montana, she worked to protect public lands and the many imperiled species that depend on them, including wolves, grizzly bears, and native trout.

Abigail received her B.A. from Yale University and her law degree from the University of California, Berkeley, where she graduated Order of the Coif.

Expert Posts & Articles

May 27, 2026

To the New Lawyers: You Are the Change Agents We Need

Earthjustice President Abigail Dillen addressed graduates of the Vermont Law and Graduate School on May 16, 2026.
Beyond Carbon Logo
September 20, 2023

Joining Forces to Fight the Climate Crisis and Move Beyond Carbon

Earthjustice and Beyond Carbon partner to accelerate the clean energy transition and advance environmental justice.
July 7, 2023

America’s Clean Energy Transition Needs Federal Action – Not Rollbacks

To speed up clean energy we must tackle the transmission bottleneck – right now.
Electricity transmission lines.
December 22, 2022

A Roadmap for the Clean Energy Future We Need

We must reject the false choice between quickly ramping up transmission and protecting communities from harmful permitting decisions.
The founders and leaders of the organizations that created the Climate Justice Pavilion, from left: Dr. Beverly Wright of the Deep South Center for Environmental Justice, Dr. Robert Bullard of the Bullard Center for Environmental Justice, and Peggy Shepar
November 21, 2022

What We Saw at COP27: Lackluster Outcomes but Hopeful Connections

Centering justice and community at the UN Climate Summit in Sharm El-Sheikh, Egypt.
Julian Robertson
August 25, 2022

In Memory: Julian Robertson

Earthjustice mourns the passing of philanthropist Julian Robertson.

Media Inquiries

Lauren Wollack
Vice President, Public Affairs and Communications
lwollack@earthjustice.org

On Social Media

LinkedIn

@abbiedillen

Bar Admissions

MT, NY, CA

Quoted in the News

February 12, 2026

NPR

Trump’s EPA will stop regulating greenhouse gases, setting up a legal fight

“We will see this administration in court, to ensure that our government does its job to protect us.”
March 2, 2025

The New York Times

‘Full on Fight Club’: How Trump Is Crushing U.S. Climate Policy

“This is not the kind of stately tennis match of the usual switch-over in administrations. This is full on Fight Club.”
February 24, 2025

The New Republic

Trump and Musk’s Lawless Power Grab

“Trump is assuming no boundaries. They’re waiting for someone to throw up some boundaries. As long as that’s not happening, they’re going to do whatever they want.”
February 12, 2025

The New York Times

Environmental Groups Steel Themselves to File Wave of Lawsuits

“It’s hard to dismantle agencies and get a lot done at the same time.”
February 11, 2025

Patagonia

The Best Defense

“We’re at the halfway mark of a decade that I’ve been looking toward for my whole career. We have to keep moving forward over the next five years. We can’t just be on defense waiting for a better day to come. … Donald Trump can [declare] an energy emergency — but the truth is, we make our energy policies state by state, and we make them kind of trial by trial.”
January 21, 2025

The New York Times

Trump Wants to Unleash Energy, as Long as It’s Not Wind or Solar

“Perhaps the biggest race for the future is who will command clean energy. Even if you want to see more drilling, if you’re in the majority of Americans, you also want to see clean energy move forward.”

Latest Press Statements

Abigail Dillen, wearing a red dress, speaks in a conference room surrounded by people holding signs that say "stop epa's climate chaos"
February 12, 2026

Trump EPA Repeals Endangerment Finding, Abandoning Responsibility to Protect Americans from Climate Pollution

By repealing the endangerment finding, EPA is rejecting settled law and science to benefit polluters
February 4, 2026

Earthjustice Calls on Congress to Hold the Department of Homeland Security Accountable

Earthjustice responds to the Trump administration’s recent attacks against civilians
U.S. Capitol building in Washington, D.C.
July 3, 2025

Earthjustice Statement on House Passage of the Budget Reconciliation Bill

This isn’t just a dereliction of duty; it’s an unconscionable betrayal of the American people.   
The U.S. Supreme Court building.
June 27, 2025

Earthjustice Responds to Supreme Court Decision on Birthright Citizenship and Nationwide Injunctions

Earthjustice President Abigail Dillen issues statement
A man charges an electric car at home before a family trip in Washington state.
May 22, 2025

Earthjustice Responds: Senate Overturns Waiver for States’ Car and Truck Standards in Unlawful Maneuver that Breaks Senate Rules

The Senate abused the Congressional Review Act and overrode its own nonpartisan parliamentarian today in vast overreach on states’ rights to clean their air
Silhouette of oil and gas drilling rigs.
April 24, 2025

Earthjustice Statement on DOI ‘Emergency Permitting’ Announcement

New emergency permitting regulations will shorten processes that typically take 1-2 years to a few weeks