About

Donald D. Cooper is a seasoned energy attorney with more than 60 years of experience advising clients on a broad range of legal and business matters. Based in San Francisco, he has built a long career focused on the energy sector, bringing deep knowledge of the regulatory, commercial, and transactional issues that can affect energy companies, project developers, and other industry stakeholders. Throughout his practice, Mr. Cooper has been recognized for his practical perspective, careful judgment, and ability to help clients navigate complex legal challenges with clarity and confidence. As an attorney with Nixon Peabody LLP and the Law Offices of Donald D. Cooper, Mr. Cooper is known for providing thoughtful, client-centered counsel tailored to each client’s goals. His approach emphasizes responsiveness, strategic problem-solving, and a clear understanding of the evolving legal landscape surrounding energy matters. Whether advising on regulatory concerns, contract issues, or broader business considerations, he works to deliver guidance that is both legally sound and commercially informed. Clients turn to Donald D. Cooper for steady counsel, decades of experience, and a commitment to helping them move forward effectively in a highly regulated and competitive industry. His long-standing presence in the legal profession reflects a dedication to service, professionalism, and the practical legal support energy clients need to address today’s challenges and plan for the future.

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