Holly Pearen

Senior Attorney


Areas of expertise:
Energy and wildlife law, Endangered Species Act, mitigation policy, infrastructure and energy development

Holly principally focuses on Endangered Species Act legislation and litigation, working to protect the integrity of the law,  supporting habitat exchange programs, and defending effective mitigation policy. Holly also engages in efforts to improve infrastructure performance and reduce methane emissions by advocating for the deployment of advanced technology and analytics.

At EDF, Holly enjoys working closely with scientists and policy experts to leverage their expertise into tangible results through litigation and other legal tools. This is what Holly appreciates most about EDF’s approach – that decisions are grounded in sound science.

Prior to joining EDF, Holly worked as an attorney-advisor at the U.S. Department of the Interior, and in private practice.


Prior to EDF, Holly worked in the Department of the Interior’s Office of the Solicitor, counseling BLM and NPS on issues related to oil and gas leasing, and in private practice.


  • Lewis & Clark Law School , J.D.
  • University of Wisconsin-Madison, B.A., Economics, with honors
  • London School of Economics, General Course