HEATHER PALMER is an award-winning environmental and energy partner who has been recognized for her work on environmental, social, and governance (ESG) matters. She serves as a co-leader of the firm’s ESG and Sustainability and climate change practices. Heather plays a strategic role in advising clients on a broad range of ESG and sustainability issues and related risks, including the disclosure of ESG-related risks in SEC filings, the review of shareholder proposals relating to ESG topics, the development of corporate ESG programs and policies, the establishment of sustainability targets and goals, the preparation of sustainability and corporate impact reports, supply chain management, and the sustainable sourcing of products and raw materials.
“Strong technical expert on environmental issues.”
Chambers USA 2024
Heather’s practice also focuses on environmental law, counseling clients on regulatory requirements, assisting them in the evaluation and negotiation of corporate and real estate transactions, supporting them in the development of environmental management systems (EMS), and advising them on environmental disclosure requirements. Her energy industry experience includes advising clients in the oil and gas, refining, chemicals, manufacturing, power, and renewables sectors on environmental compliance and the allocation of environmental liabilities in mergers and acquisitions. Heather also advises clients on carbon capture, utilization, and sequestration (CCUS) matters.
Heather has been named an “Outstanding Business Leader in Law” as part of the Houston Business Journal’s 2024 Women Who Mean Business Awards, which recognizes women who have demonstrated excellence in their career and community. She has also been acknowledged in numerous industry publications. Heather was recognized in Chambers Crisis & Risk Management for Global-wide Environmental, Social & Governance Risk (2021–2024) and was featured in Chambers USA for Texas Environment (2006–2012 and 2016–2024) and Texas Environment: Mainly Transactional (2022–2024). Best Lawyers acknowledged her for Environmental Law (2009–2025). Furthermore, Heather was awarded the “Lawyer of the Year” distinction in the 2021 and 2025 editions of The Best Lawyers in America for her work in Environmental Law. She was featured in Texas Super Lawyers (2010–2015, 2019-2020) and was listed among the Lawdragon “Green 500: Leaders in Environmental Law” (2023), and the Lawdragon 500 “Leading Environmental Lawyers” (2025). Heather was named to the 2021 National Association of Corporate Directors Directorship 100 in recognition of her significant impact on boardroom practices and performance. She was also part of the Sidley team named as the winner of the Financial Times 2021 “Innovation in Sustainability and ESG” award for its work in helping aviation and airlines industry clients to reduce greenhouse gas (GHG) emissions.
Clients in the 2024 edition of Chambers USA describe Heather as a “subject matter expert in her field” and commend her as a “fantastic negotiator; when she speaks, people listen.” Clients also praise her ESG work, noting that “her knowledge of how a corporation should manage environmental governance is unparalleled” (Chambers USA, 2021).