Carlsmith Ball LLP

Gerald Sumida

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Practice Areas

Chairs Carlsmith's Business, Corporate & Finance Practice Group. Concentrates on energy law—represents firms in developing energy, including renewable energy projects and facilities that sell power to electric utilities, including structuring organizational arrangements, negotiating power purchase arrangements, completing site acquisition, undertaking permitting and land use matters, negotiating financing, including project finance arrangements, engaging in public utilities commission proceedings relating to energy projects. Clients include Kalaeloa Partners (cogeneration), Puna Geothermal Venture (geothermal), First Wind (wind), Sea Solar International (OTEC), Oceanlinx (wave energy), solar photovoltaic, energy service, waste-to-energy and clean technology firms.

Focus includes business structuring/operations; business acquisitions, sales and mergers; securities law; start-up company/venture capital financing; administrative and public utilities law; antitrust and trade regulation law; federal and state legislative and administrative matters; and international legal matters.


Rejoined Carlsmith Ball in 2003 after serving as General Counsel of the Asian Development Bank.

Professional Memberships

Hawaii State, American and Inter-Pacific Bar Associations; American Society of International Law.


J.D., Yale Law School; B.A., summa cum laude, Princeton University.

2015, 2018 and 2020 Lawyer of the Year - Honolulu - Energy Law, The Best Lawyers in America; 2012 Lawyer of the Year - Honolulu - Business Organizations (including LLCs and Partnerships), The Best Lawyers in America.