Gregory Eisenstark

Greg has wide-ranging experience representing public utilities, unregulated energy companies, electric generation companies, educational and governmental institutions, and other industry participants. He maintains a comprehensive energy and utility regulatory and transactional practice, with expertise in base rate cases, rate clause filings, reliability issues, public utility project siting petitions and appeals, mergers and acquisitions, renewable energy (including solar and offshore wind projects), demand response and energy efficiency issues, regulatory audits, provider of last resort and competitive third-party supplier issues, and utility financing issues. He has experience in administrative rulemaking, drafting legislation, and counseling on energy policy issues, as well as appellate experience in both state and federal courts.

Greg has litigated hundreds of utility rate and regulatory filings to successful completion. Since the early 1990s, he has handled many base rate cases involving water, wastewater, natural gas, and electric utilities.

Prior to private practice, Greg served as associate general regulatory counsel for Public Service Enterprise Group (PSEG), where he represented PSEG's operating companies in regulatory matters before the New Jersey Board of Public Utilities, the Federal Energy Regulatory Commission, other state utility commissions, and in state and federal courts. Earlier in his career, Greg was managing attorney – electric for the New Jersey Division of Ratepayer Advocate, where he represented utility customers in matters before regulatory agencies and courts. In that capacity, Greg played an active role in the transformation of the PJM Interconnection from a power pool to an independent system operator. Before that, Greg was a deputy attorney general of New Jersey, where he represented the Board of Public Utilities and Department of Environmental Protection in utility and solid waste industry matters.

Speaking Engagements

He has spoken on energy and utility issues for the New Jersey Institute of Continuing Legal Education, the New Jersey State Bar Association, and at other industry conferences. He has also been a guest lecturer on utility rate issues at Rutgers University School of Law and Seton Hall University School of Law.

Rankings & Accolades

Greg has been ranked by Chambers & Partners USA and has also been elected to The Best Lawyers in America for Energy Law since 2016. In addition, he was selected by Best Lawyers as a New Jersey "Lawyer of the Year" for Energy Law in 2019 and 2021.