Justin Mirabal is a partner in Morrison Foerster’s Washington, D.C. office and a member of the Transactions Group.

Justin advises energy industry clients on regulatory, transactional, and project finance matters. His career spans private practice, a federal judicial clerkship in the Southern District of Texas, and service as a trial attorney in FERC’s Office of Administrative Litigation, a background that gives him a distinctive, multi-stakeholder perspective on the challenges facing today’s energy industry.

Justin represents electric utilities, natural gas and oil pipelines, and their stakeholders in proceedings before FERC and state public utility commissions. His practice covers enforcement and compliance matters at both the federal and state levels, and he has secured favorable outcomes in contested regulatory proceedings and brokered consensus agreements between regulated entities and their customers in complex settlement negotiations.

A significant focus of Justin’s practice involves advising large industrial customers—including international hyperscalers and data center operators—on the full spectrum of power supply issues. This includes negotiating power purchase agreements with utilities, resolving federal and state jurisdictional questions, managing regulatory compliance, pursuing interconnection applications, and securing transmission access. He has also assisted data center clients in negotiating water and wastewater service agreements with utilities and municipalities across the country.

Justin’s regulatory work is grounded in deep subject-matter fluency across the Federal Power Act, the Natural Gas Act, and the Interstate Commerce Act, statutory frameworks that define the evolving regulatory landscape his clients must navigate.

Beyond his energy practice, Justin counsels nonprofit organizations on corporate governance matters, including entity selection and formation, federal and state tax-exempt status, and dissolution.

Memberships

• Energy Bar Association, Board of Directors, May 2025–May 2028
• Economic Club of Washington, D.C., Executive Fellow
• Foundation of the Energy Law Journal, President, 2023–2024
• Hispanic Bar Association of the District of Columbia