About

John Gavin Cossa is a seasoned energy attorney with the Law Offices of John Gavin Cossa | Trinity Consultants, Inc. based in Washington, DC. He brings extensive experience advising clients on energy-related legal matters, with a practice focused on helping businesses and organizations navigate the complex regulatory, contractual, and strategic issues that shape the energy sector. From the firm’s office at 1800 G St NW Ste 2400, he serves clients seeking practical legal guidance in a highly regulated and constantly evolving industry. With a deep understanding of the legal and commercial forces that influence energy operations, John provides counsel designed to help clients move forward with confidence. His approach is grounded in responsiveness, careful analysis, and a commitment to tailoring solutions to each client’s goals. Whether addressing compliance concerns, negotiating agreements, or evaluating risk, he works to deliver clear, effective legal support that aligns with the realities of the energy marketplace. Clients turn to John Gavin Cossa for knowledgeable representation and a steady, business-minded perspective. He is committed to providing the informed advocacy and thoughtful counsel that energy clients need to make sound decisions, protect their interests, and manage challenges efficiently. His long-standing dedication to the field reflects a professional focus on helping clients succeed in an industry where precision, foresight, and reliability matter.

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