Department profile
Energy: Oil & Gas (Transactional)
USA Guide 2026 : USA - Nationwide
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Ranked Individuals
Ranked Individuals
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Work Highlights
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Orrick, Herrington & Sutcliffe LLP advised Clenera Holdings on regulatory matters related to the development of a multi-phase solar and battery storage project being developed in Bernalillo County, New Mexico.
Strengths
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Orrick has high levels of internal expertise resulting in timely responses.
Energy: Oil & Gas (Transactional) respondentUSAOrrick's advice always hits the nail on the head and is pragmatic.
Energy: Oil & Gas (Transactional) respondentUSAOrrick are meticulous legal thinkers. What separates Orrick is their ability to deliver practical, actionable advice that cuts through the noise and refines the signal.
Energy: Oil & Gas (Transactional) respondentUSAOne of the biggest strengths of the Orrick team is the diversity and breadth of internal expertise at their disposal that can be dispatched at different stages as needed.
Energy: Oil & Gas (Transactional) respondentUSA
Notable Practitioners
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Band 1 
Band 1 Lisa Tonery
Lisa Tonery comes highly recommended for her considerable expertise in representing major clients in high value LNG proceedings before FERC and the DOE, particularly in seeking authorization for the construction and operation of liquefaction and export terminals.
Lisa is well respected in the regulatory space, and has an encyclopedic level of knowledge of DOE and FERC.
Energy: Oil & Gas (Transactional) respondentUSA
Band 2 
Band 2 Amy C Roma
Amy Roma has expertise spanning contentious, regulatory and commercial matters involving the NRC and DOE. She has further strengths in advising on nuclear liability, export controls and nuclear technology. Amy has the technical as well as the legal expertise.
Energy: Oil & Gas (Transactional) respondentUSAAmy provides excellent counsel and succinct guidance.
Energy: Oil & Gas (Transactional) respondentUSA
Band 3 Band 3 Cory Lankford
Cory Lankford assists with regulatory issues and approvals in the context of M&A, project development and investments. Cory is very thorough and knowledgeable.
Energy: Oil & Gas (Transactional) respondentUSA
Band 5 
Band 5 Joe Roger
Joe Roger is active in the oil and gas space, where he is particularly noted for his upstream sector work. He is adept in acquisitions, divestures and various other transactions. Joe is the epitome of an excellent lawyer.
Energy: Oil & Gas (Transactional) respondentUSA
Band 5 
Band 5 Jonathan Ayre
Jonathan Ayre is noted for his work handling acquisitions, asset securitizations, financings and restructuring transactions on behalf of oil and gas sector clients. Jonathan always has timely responses to technical questions.
Energy: Oil & Gas (Transactional) respondentUSAJonathan is an outstanding individual. He is always available, a good communicator and action-oriented.
Energy: Oil & Gas (Transactional) respondentUSA
Up and Coming 
Up and Coming Mariah Johnston
Mariah Johnston focuses her practice representing clients in the oil and gas space, frequently providing FERC regulatory and compliance advice.
Associates to watch 
Associates to watch Kayla J Grant
Kayla Grant focuses her practice in the power space, advising her clients on a variety of FERC regulatory matters including jurisdictional issues and market-based rate authority applications.
Ranked Individuals at Orrick, Herrington & Sutcliffe LLP (7)
USA - Nationwide
Cory Lankford
Energy: Electricity (Regulatory & Litigation)
View profile Kayla J Grant
Energy: Electricity (Regulatory & Litigation)
View profile Amy C Roma
Energy: Nuclear (Regulatory & Litigation)
View profile Lisa Tonery
Energy: Oil & Gas (Regulatory & Litigation)
View profile Mariah Johnston
Energy: Oil & Gas (Regulatory & Litigation)
View profile Joe Roger
Energy: Oil & Gas (Transactional)
View profile Jonathan Ayre
Energy: Oil & Gas (Transactional)
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