Daniel  Clearfield harrisburg

Daniel Clearfield

Chair, Regulated Industries (Energy, Utilities, Telecommunications, and Regulated Substances)


Dan Clearfield is Chair of Eckert Seamans’ Regulated Industries (energy, utilities, telecommunications, and regulated substances) Practice Group.  His energy-related practice is concentrated in the areas of utility, energy, and communications regulatory litigation; alternative energy development and regulation; shale gas drilling and mid-stream issues; administrative litigation; and government relations. He is one of the firm’s representatives on the Marcellus Shale Coalition and is a member of the PBA Medical Marijuana and Hemp Law Committee. Dan is also co-coordinator of Eckert Seamans’ Regulated Substances Group.

Prior to entering private practice, Dan served as executive deputy attorney general in the Pennsylvania Attorney General’s Office and as senior assistant consumer advocate in the Pennsylvania Office of Consumer Advocate. Clearfield received his B.A. from Temple University, magna cum laude, in 1974 and his J.D. from Temple University School of Law, cum laude, in 1977 where he served as an editor of the Law Quarterly.

Clearfield is the author of numerous articles and commentaries in the areas covered by his practice.

Representative Matters


  • Represents the nation’s largest municipally owned natural gas distribution company in regulatory litigation and other matters including base rate cases, gas cost rate proceedings, major consumer complaint cases and numerous other PUC cases; provides advice on legislative and other policy issues.
  • Represents leading electric generation suppliers in licensing and regulatory issues, electric distribution default service procurement and pricing cases, market opening proceedings, and utility merger proceedings.
  • Represented natural gas producers’ association in proceedings to set the rates, terms, and conditions for local gas gathering and other services.
  • Represented cogenerators in administrative litigation to determine the ownership of Renewable Energy Credits under the Pennsylvania Alternative Energy Portfolio Standards Act.
  • Advised and provided regulatory support for numerous distributed energy projects including solar, and wind.
  • Acted as regulatory counsel to international sovereign fund in acquisition of major interest in Pennsylvania electric utility.


  • Represents Pennsylvania’s largest PUC regulated water/wastewater/stormwater authority in all regulatory proceedings including its PUC compliance plan, several base rate cases and consumer complaints.

Regulated Substances

  • Co-lead Eckert Seamans’ team in assisting clients in preparing applications to obtain permits to grow, process, and dispense medical marijuana in Pennsylvania.
  • Regularly advises clients on state and federal issues regarding regulated substance regulatory issues.

Professional Affiliations

  • Pennsylvania Bar Institute Medical Marijuana & Hemp Law Committee, Member
  • Pennsylvania Office of Attorney General, Former Executive Deputy Attorney General and Director of the Public Protection Division (1990-1994)
  • Pennsylvania Office of Consumer Advocate, Former Senior Assistant Consumer Advocate (1987 – 1990)
  • Center for Sustainable Shale Gas Development (Pittsburgh), Secretary/Treasurer

Community Involvement

  • Cardoza Society of the Jewish Federation of Greater Harrisburg, Co-Chair
  • Jewish Federation of Greater Harrisburg, Past Member of the Board of Trustees and Past Co-Chair of the Strategic Planning Committee
  • Past member, Jewish Home of Harrisburg, Board of Directors
  • Served on Governor Elect Tom Wolf’s Transition Team for the Public Utility Commission

Awards and Recognition:

  • Selected for inclusion as The Best Lawyers in America 2023 and 2024 for Energy Law and Energy Regulatory Law
  • Selected for inclusion in The Best Lawyers in America – Energy Law and named the Best Lawyers® 2021 Energy Law “Lawyer of the Year” in Harrisburg

News and Insights


Regulated Substances


Media Coverage

Regulated Substances

  • “Pennsylvania Finalizes Medical Marijuana Research Regulations,” Cannabis Business Times, March 23, 2018.
  • “For Medical Cannabis Lawyers, It’s Crunch Time,” The Legal Intelligencer, June 2017.
  • “Big Law Feeling Freer to Advertise Medical Marijuana Practices,” The Legal Intelligencer, December 2016.
  • “What’s new in medical marijuana regulations,” Central Penn Business Journal, November 11, 2016.
  • “Medical marijuana is coming to Pennsylvania: Here’s what you need to know about this burgeoning industry,” Pittsburgh City Paper, August 31, 2016.
  • The ‘alternative universe’ of cannabis law,” Central Penn Business Journal, August 19, 2016.
  • “Potential biz owners laud Pa. hemp legislation,” York Dispatch, July 25, 2016.
  • Medical marijuana: Building a legal industry,” The Sentinel, April 29, 2016.
  • Medical marijuana: What happens next in Pa.?” The Sentinel, May 1, 2016.
  • “Marijuana business: Uncharted territory?,” Central Penn Business Journal, April 22, 2016.
  • “Medical marijuana business will be big business,” The Morning Call, April 15, 2016 and Pittsburgh Post-Gazette, April 16, 2016.
  • “Ethics Rules Haven’t Caught Up To Medical Marijuana Legislation,” The Legal Intelligencer, April 15, 2016.
  • “When will medical marijuana be available in Pennsylvania?,” Central Penn Business Journal, April 15, 2016.
  • “Legalized Pot Might Create Work Lawyers Fear Going After,” The Legal Intelligencer, September 15, 2015.
  • “Medical Cannabis Industry in Pennsylvania,” Twitter chat with the Central Penn Business Journal, May 6, 2015.


  • “New Pa. Task Force Heralds Emerging Pipeline Fight,” Law360, May 29, 2015.

Speaking Engagements

Regulated Substances

  • “Drug Law Policy and Practice: Marijuana Regulation,” guest lecturer, Temple University Beasley School of Law, April 2018.
  • “Medical Cannabis-Business Best Practices,” co-presented at a legal seminar sponsored by the PA Medical Cannabis Society, May 2016.
  • A Closer Look at Pennsylvania’s Medical Marijuana Act,” co-presenter, Eckert Seamans’ Continuing Legal Education Seminar, August 2016.


  • Alternative Energy Opportunities: What to Look For and What to Avoid,” co-presenter, Eckert Seamans’ Continuing Legal Education, September 2015.
  • “How the Arrival of the Wolf Administration in Harrisburg will Affect Energy and Environmental Policies in the Keystone State,” panelist, Villanova Environmental Law Journal Symposium, February 2015.
  • “Beyond Regulation: Two Approaches from the Marcellus Shale Coalition and the Center for Sustainable Shale Development,” panel moderator,  Progressive Development: The State of Government and Non-Government Efforts to Ensure Safe and Reasonable Natural Gas Extraction in the Appalachian Basin, Eckert Seamans’ CLE, February 7, 2014.
  • “Involving Consumers in Energy Distributed Generation and Net-Metering,” presented at the University of Pittsburgh School of Law 2013 Energy Law and Policy Institute, August 2013.
  • “A Conversation with the Advocates” and “Natural Gas Workshop” PUC Law Conference in Harrisburg, May 2013.
  • “The Low Carb(on) Diet. Will Marcellus Shale be the Magic Pill to Quench Our Domestic Hunger?” 29th National Regulatory Conference, May 2011.
  • “Legal Issues Associated with Marcellus Shale Development,” Eckert Seamans’ CLE, August 2010.
  • “What to do When the Electric Rate Caps Come Off in Pennsylvania,” co-presenter, November 2009.
  • “Public Utility Law Primer,” Eckert Seamans’ CLE, August 2009.
  • “Navigating the Alternative Energy Investment Act,” Pennsylvania Bar Institute CLE, 2008.
  • “Public Utility Bench-Bar Conference – Lobbying by Lawyers,” Pennsylvania Bar Institute CLE, 2006.
  • “Pennsylvania Public Utility Law Conference – Natural Gas Pricing Issues,” Pennsylvania Bar Institute CLE, 2005.