I enjoy assisting clients who are committed to environmental sustainability and promoting renewable energy.
Aaron Lang’s environmental and energy law practice covers a wide range of services, including energy facility siting and permitting, federal and state incentives for sustainable technologies—and in particular, energy regulatory policy emanating from federal tax incentives for renewable energy and other low-carbon projects—proceedings before energy and environmental regulatory agencies, compliance, litigation, and diligence in energy-related transactions.
A partner in the firm’s Energy and Climate group, Aaron assists developers in securing the permits, licenses, and other approvals needed to build utility-scale offshore wind facilities, battery energy storage systems, and other large-scale facilities. He represents clients in regulatory proceedings before state public utilities commissions and other energy and environmental agencies in the Northeast. And he conducts permitting, environmental, and other energy-related diligence in a broad range of renewable energy project transactions.
A core area of Aaron’s practice is advising on clean energy incentives under federal and state law, such as the recently enacted July 4, 2025 Budget Bill, Inflation Reduction Act, Bipartisan Infrastructure Law, and the Renewable Fuel Standard and state equivalents. This includes advising on key areas of energy regulatory policy that relate to tax credits and other incentives for renewable energy projects and other low-carbon technologies. Aaron’s experience extends to several types of technologies, including wind, solar, battery energy storage, renewable natural gas, sustainable aviation fuels, other biomass-based fuels and eFuels, clean hydrogen, and carbon capture.
Aaron also has extensive experience litigating and resolving complex environmental disputes, including under federal and state Superfund statutes, the federal Clean Air Act, and multiple Massachusetts environmental laws, including laws and regulations governing sustainable coastline development. Aaron also represents clients in administrative and judicial disputes and appeals relating to environmental permits and other development matters.
Aaron served for four months as a special assistant district attorney for Norfolk County, where he conducted seventeen criminal trials before judges and juries.
Aaron also maintains an active pro bono immigration practice, representing unaccompanied migrant children seeking lawful permanent residency in the United States.
Before joining the firm, Aaron served as law clerk for Justice Gary E. Hicks of the New Hampshire Supreme Court.
