Brook's practice focuses on climate change, renewable energy, and environmental litigation.

He helps his clients to negotiate, structure, and implement transactions related to climate change and environmental commodities markets. He regularly counsels clients during transactions under the European Union Emissions Trading System (EU ETS), California’s cap and trade program (AB 32), and other United States and international emissions trading programs. Brook also supports clients in the renewable energy industry, providing advice on renewable energy policies, regulations, and incentive programs and counseling clients on the environmental aspects of renewable energy projects and transactions. Brook’s experience also includes complex environmental litigation, and he has served as litigation and appellate counsel during dozens of proceedings in state and federal courts across the country.

Brook's climate change and renewable energy experience includes:

  • Provided advice to a broad range of clients on state and federal renewable energy policies, incentives, and regulations.
  • Advised clients during the structuring and development of numerous carbon offset and renewable energy projects and transactions, including U.S. forest offset projects, hydroelectric projects under the Clean Development Mechanism, domestic landfill gas-to-energy development, and a novel trans-border carbon offset generation project involving chlorofluorocarbon (CFC) destruction.
  • Represented Native American tribes and corporations during the development of large carbon offset projects on tribal forest lands.
  • Drafted model renewable portfolio standards.
  • Developed regulatory guidance and strategy for over thirty energy companies on a wide range of environmental issues, including state and federal greenhouse gas regulations.
  • Counseled clients on carbon accounting, social cost of carbon metrics, and climate risk disclosure.

Brook's litigation experience includes:

  • Won a complete victory, after a six-week jury trial in federal court, for a major multinational corporation accused of causing contamination in a waterway adjacent to a former facility.
  • Obtained summary judgment for a major utility in Clean Air Act (CAA) litigation involving thousands of claims and alleged damages exceeding $100 million.
  • Represented clients in numerous cases brought under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) and state Superfund laws.
  • Served as primary counsel in Third Circuit appeal of Environmental Protection Agency (EPA) regulatory action directed at electric generating facility.
  • Represented refinery and utility companies during litigation related to the adoption of state and federal regulations governing air quality and emissions.

Prior to joining the firm, Brook was an associate in the environmental department of a large international law firm.

Brook served as a law clerk at the U.S. Department of Justice, Environment and Natural Resources Division, where he worked on a range of legal issues arising under federal environmental law, including Clean Water Act (CWA) wetlands jurisdiction, CERCLA liability, Resource Conservation and Recovery Act (RCRA) compliance, and National Environmental Policy Act (NEPA) requirements. Brook was Associate Editor of the Lewis & Clark Law School Environmental Law Review and served on the Moot Court Honor Board. At Dartmouth College, Brook worked as a teaching assistant in the Environmental Studies Department, and as a research assistant in the Biology Department.

Brook currently serves as co-chair of the Boston Bar Association’s Air Quality & Climate Change Committee. Brook also maintains an active pro bono practice, counseling individuals and non-profit entities on a range of legal matters in Massachusetts. 

Brook was named as a "Rising Star" in Super Lawyers for environmental work in 2017.


  • Dartmouth College  (B.A., 1998)
    • Environmental Studies
  • Lewis & Clark  (J.D., magna cum laude, 2009)
    • Certificate in Environmental & Natural Resources Law

Bar Admissions

  • Massachusetts
  • District of Columbia

Court Admissions

  • U.S. Court of Appeals - First Circuit
  • U.S. Court of Appeals - Third Circuit
  • U.S. District Court – District of Columbia
  • U.S. District Court – Colorado