Mosby is a leader in the firm’s Energy Transition practice where he advises startups, electric utilities, infrastructure companies, and investors in the energy space. He has extensive experience advising and executing legal strategies for complex projects, business ventures, transactions, and regulatory matters. Drawing upon his knowledge of both the public and private energy sectors, he is adept at helping clients navigate legal and regulatory regimes and efficiently achieving business objectives. 

Mosby’s experience prior to joining Van Ness Feldman includes working in the federal government as an Attorney-Advisor with the Federal Energy Regulatory Commission’s (FERC) Office of General Counsel, where he focused on electricity markets, rates, and tariffs. In the private sector, Mosby’s experience includes practice with an international law firm where he represented electric utilities in the organized markets, renewable energy generators, and investors.  Mosby also served as Vice President and Deputy General Counsel for Kinder Morgan, one of North America’s largest energy infrastructure companies. At Kinder Morgan, Mosby oversaw legal services across the company’s interstate natural gas pipelines, storage facilities, and liquefied natural gas (LNG) companies. He also advised on projects and transactions across the United States and in Mexico. 

Mosby is based in Houston and immersed in the region’s emerging energy transition ecosystem. He is active with the Princeton Alumni Angels and advises entrepreneurs, many of whom are members of Rice Clean Energy Accelerator, Greentown Labs, Techstars, and the Cannon, among other affiliations. 

He is also the Immediate Past President of the Energy Bar Association and has served on the Board of Charitable Foundation of the Energy Bar Association, the Board of the Foundation of the Energy Law Journal, and the Steering Committee for the EBA’s Energy Insecurity Initiative.   

  • Experience
    • Deputy General Counsel and Vice President at Kinder Morgan, serving as general counsel for Kinder Morgan’s interstate natural gas pipelines, working closely with a team of exceptional in-house attorneys, commercial leads, operations personnel, business development units, and corporate executives. 

    • Guided interstate pipelines through the Federal Energy Regulatory Commission’s implementation of the Tax Cuts and Jobs Act and helped major long-haul pipelines reach FERC-approved settlements with all shippers without the need for litigation or any additional intervention by FERC, eliminating hundreds of millions of dollars of exposure for the clients and avoiding protracted litigation over rates. 

    • Advised joint venture for greenfield natural gas project in Texas through negotiations to anchor, construct, own, and operate its approximately $1.75 billion, 427-mile pipeline from the Permian Basin to Agua Dulce near the Texas Gulf Coast. 

    • Led public utilities through the $4.5 billion Smart Grid Investment Grant program, securing funding, negotiating with vendors, and protecting clients through to final accounting. 

    • Provided regular, day-to-day counseling for Midwestern and Southeastern utilities, including regulatory advice on acquisitions, formula rates, tariffs, interconnections, transmission incentive rates, enforcement matters, and audits. 

    • Represented an independent power producer (IPP) with affiliated wind generation project companies to successfully challenge costs charged to generators for network upgrades associated with generation interconnections in MISO. 

    • Represented southwest public utility in securing FERC approval of updated transmission loss factors. 

    • Represented an IPP in a sale of three power generation facilities in New York and Pennsylvania, including FERC regulatory approvals and filings. 

    • Represented a Western public utility in the acquisition of a holding company with three gas-fired generation facilities and the subsequent merger of a holding company into a public utility, including FERC regulatory approvals and filings. 

    • Represented Rockies public utility in the acquisition of two power plants from a major IPP. 

    • Represented a private equity group on the acquisition and subsequent sale of a gas & oil-fired power plant in PJM. 

    • Represented a mid-major in the acquisition of a major Texas refinery that included the transfer of large electric generation facility in ERCOT. 

    • Advised a sovereign wealth fund on the acquisition of a substantial interest in a midwestern public utility. 

    • Successfully defended a Mid-Atlantic utility against complaint brought by the FERC and several state attorneys general alleging unlawful market manipulation. 

    • Successfully negotiated a settlement agreement for Midwestern utilities that extracted them from the California Refund Proceeding and obtained refunds in the process. 

    • Counseled a Southeastern utility on affiliate transactions and on revamping its systems to comply with FERC regulations. 

    • Served as an advisor for the first class of the Rice Alliance’s Clean Energy Accelerator launched in 2021 to increase the likelihood of success for early-stage energy startups building solutions for a cleaner, more efficient, and sustainable future. 

    • Advising startups and founders working on projects and systems to support or enhance renewable generation, smart grid technologies, distributed generation, electric vehicle deployment, and the hydrogen economy. 

    • Founded and advising an initiative to organize, amplify, and coordinate efforts to reduce energy insecurity across the United States and Canada. 

  • Professional Affiliations

    Energy Bar Association

    Immediate Past President 2022-2023

    President, 2021-2022

    Vice President, 2019-2020

    Board Member

    Professional Education Counsel, Co-Chair

    Gulf Coast Power Association


    Houston Arboretum & Nature Center

    Board Member

    Rice Alliance for Technology and Entrepreneurship




    Princeton Alumni Angels

    Mentor/Deal Lead/Investor

  • Awards & Honors
    "Best Lawyers in America" by Best Lawyers
    CleanTech Law, 2024
    Energy Law, 2024
  • Bar & Court Admissions
    District of Columbia Bar
    Texas State Bar
    Virginia State Bar
  • Government Service

    Federal Energy Regulatory Commission

    Office of General Counsel, Energy Markets, Attorney-Advisor, 2006-2009

    Federal District Court, Northern District of West Virginia

    Law Clerk for the Honorable Frederick P. Stamp, Jr., 2004-2006

  • News & Presentations
  • Thought Leadership


University of Richmond School of Law J.D. & M.A. in English Literature, 2004

Princeton University B.A., 1998

Rice University Business Executive Education, Global Energy Leadership Program, certificate in progress