People

Diane Evans Baker Botts Washington
Diane Gremillion Evans
Senior Associate

Overview

Diane Evans counsels clients in energy regulatory proceedings, investigations, and transactional matters before the Federal Energy Regulatory Commission (FERC), state public utility commissions, and federal courts. She is experienced in a wide range of natural gas, electric, crude oil and petroleum regulatory matters, including market-based, cost-of-service, and contract rate proceedings; administrative litigation; and project development transactions.

Diane also provides guidance on complex regulatory issues arising from the Federal Power Act, the Natural Gas Act, and the Interstate Commerce Act.

While in law school, Diane served as a judicial extern for the Hon. Joel R. Branscom of the 25th Judicial Circuit of Virginia.

Prior to law school, Diane was a Bonner Scholar at the University of Richmond.

Admissions & Affiliations

  • District of Columbia Bar
  • United States Court of Appeals for the District of Columbia Circuit
  • Energy Bar Association
  • Women's Energy Network

Education

  • J.D., Washington and Lee University School of Law 2019
    cum laude
    Lead Articles Editor, German Law Journal
    Finalist, John W. Davis Appellate Advocacy Competition
    Finalist, Mediations Competition
  • B.A., Leadership Studies, University of Richmond 2016
    cum laude

Experience

Compliance & Enforcement

  • Non-public FERC Enforcement investigation involving wholesale natural gas trading behavior.
  • Non-public FERC Enforcement investigation into bidding behavior of co-located battery/solar resources.
  • Representing client in response to FERC Audit related to wholesale market activities.

Electric

  • CenterPoint Energy – Developing the first resiliency plan following Texas CPUC regulations; crafting enhanced systemwide resiliency plan to meet extreme weather challenges and growing load, resulting in the Texas PUC approving $2.7 billion for strategic hardening investments over 3 years.
  • Transmission Developers, Inc.– Permitting the Champlain Hudson Power Express project before DOE and the Army Corps; advising on Presidential Permit; supporting the federal regulatory strategy for the project, representing TDI before the Federal Energy Regulatory Commission and the New York Independent System Operator on transmission rate, policy and market rule matters.

Natural Gas

  • Midstream – Preparing 7(c) certification application for gathering lines to become FERC jurisdictional with various waivers of FERC reporting obligations.
  • Midstream – Preparing 7(c) certification application and advising from initial precedent agreements to open season with anchor shippers and later expansion application.
  • Advising on DOE and FERC regulatory and policy issues associated with investment in LNG liquefaction and export facilities.
  • Natural Gas Pipeline Developers – Advising on NGA classifications, regulations, and exceptions for gathering lines, plant lines, 311 pipelines, stub lines, and Hinshaw pipelines.
  • Natural Gas Company – Filing complex rate proceeding before the Railroad Commission of Texas involving multiple consolidations and establishing an ultimate parent company for providing service.

Oil & Other Matters

  • Crude Oil Shippers – Litigating Interstate Commerce Act rate issues before FERC and D.C. Circuit.
  • Major Financial Institutions – Conducting regulatory diligence reviews in connection with public equity and registered debt offerings by major oil and natural gas limited partnerships.


Awards and Community

Recognized as "One to Watch" in Energy Law by Best Lawyers in America®, 2027