About

William H. Penniman is the founder of the Law Offices of William H. Penniman in Washington, D.C., where he focuses his practice on energy law. With more than 51 years of experience, he brings deep knowledge and a seasoned perspective to the complex legal and regulatory issues that shape the energy industry. His long-standing practice reflects a commitment to helping clients navigate an evolving legal landscape with clarity, diligence, and practical insight. Throughout his career, Mr. Penniman has represented clients facing a wide range of energy-related matters, drawing on decades of experience to provide strategic counsel tailored to each client’s goals. He understands that energy issues often require not only legal skill, but also careful attention to policy, market forces, and regulatory developments. His approach is grounded in responsiveness, thorough preparation, and a clear focus on finding effective solutions that support his clients’ business objectives. Clients working with William H. Penniman can expect a lawyer who values precision, professionalism, and dependable guidance. Based in Washington, D.C., he is well positioned to assist clients in addressing the challenges and opportunities that arise in the energy sector. His practice is centered on delivering knowledgeable counsel and steady advocacy for individuals and businesses seeking experienced legal support in energy law.

Credentials

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