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Gemma Witt


With a focus on the energy and resources industries, Gemma advises clients on project structuring, development and offtake arrangements; environmental, climate and planning regulation and compliance; international carbon markets and carbon capture storage; environmental and social governance compliance, and native title and heritage matters.
Gemma’s experience spans various jurisdictions and sectors, including mining (where she has managed contracts on-site), LNG and petroleum, with a distinctive focus and track record in advising on renewable projects and decarbonisation issues.


Representative matters

Australian green energy company on a Lease Agreement and Development Agreement with the State of South Australia in relation to a green hydrogen and ammonia project.

A global green energy company on offtake arrangements for hydrogen and associated vectors including development of a template offtake agreement.

Omnes on the acquisition of a minority stake in global clean energy enterprise TagEnergy, for an amount of EUR150 million.

A national petroleum exploration and production company on the draft amendments to Thailand’s Petroleum Act with respect to the conduct of carbon capture, utilisation and storage implementation activities and potential business model options in Thailand.

Pro bono

Advising an environmental focussed not-for-profit organisation in respect of its corporate governance obligations.

Advising the Kenya Forest Working Group in relation to jurisdictional analysis of Indigenous land rights.

Advising UNHCR in relation to jurisdictional analysis of discrimination towards refugee children.

Advising Refugee Advice & Casework Service in relation to Australian Administrative Tribunal decisions on Refugee and Complementary Protections based on LGBTQI Status.



Supreme Court of Western Australia, 2019


BA Law, Murdoch University, 2018

Cert IV Business Administration, 2004

A&O Shearman was formed on May 1, 2024 by the combination of Shearman & Sterling LLP and Allen & Overy LLP and their respective affiliates (the legacy firms). Any matters referred to above may include matters undertaken by one or more of the legacy firms rather than A&O Shearman.