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Shigeki Okatani
Shigeki Okatani

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Introduction Practices Cases Seminars Related Topics Major Awards Profile
Shigeki Okatani Shigeki Okatani

Shigeki Okatani

Shigeki Okatani
Partner
Tokyo
Japanese / English
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Introduction Practices Cases Seminars Related Topics Major Awards Profile

Introduction

Shigeki Okatani leads the firm’s energy and infrastructure practice. He has extensive experience representing developers, investors and lenders in renewable energy projects, battery storage projects and hydrogen projects. His practice encompasses project development, project finance, transactions involving electricity, gas, environmental attributes, and carbon credits, as well as mergers and acquisitions (M&A), and dispute resolution. He also advises clients in the electricity and gas, chemical, semiconductor, and semiconductor equipment industries.

Major Cases

Project Finance for a Solar Power Generation Project Utilizing a Long-Term Procurement Contract for Environmental Attributes Derived from Renewable Energy Electricity
Report on the Study Results on the Diversification of Investment Assets by Investment Corporations in the “Study Group on the Future of the Infrastructure Fund Market” at the Tokyo Stock Exchange
Development, construction and project financing of Aichi-Tahara Biomass Power Plant (74,950kW)​
​Public offering (green equity) and acquisition of Tainai Wind Power Plant by Enex Infrastructure Investment Corporation (the first acquisition of a wind power plant by a listed infrastructure fund)
​Privatization of Takara Leben Infrastructure Fund, Inc. by its sponsor, Takara Leben Co., Ltd. (currently, MIRARTH HOLDINGS, Inc.) (representing Takara Leben Infrastructure Fund, Inc.)
Posting of investment risks for listed infrastructure funds on the websites of Japan Exchange Group and Tokyo Stock Exchange
Mori Hamada advised the project company and its sponsors in the concession of water services of Miyagi Prefecture, Japan
​Global offering (green equity) and acquisition of Matsusaka Solar Power Plant (Panel Output 98.0 MW) by Enex Infrastructure Investment Corporation
Mori Hamada advised the project company and its sponsors in the PFI and concession of four hydroelectric power plants of Tottori Prefecture, Japan
​Represented Akita Offshore Wind Co. (the consortium led by Marubeni) in the development and project financing for the first-ever offshore wind project in Japan, located in Akita and Noshiro ports​
Formation and IPO (listing) of a listed infrastructure fund (Enex Infrastructure Investment Corporation) sponsored by Itochu Enex Co., Ltd. and others
​Formation and IPO (listing) of the first listed infrastructure fund (Takara Leben Infrastructure Fund, Inc.), sponsored by Takara Leben Co., Ltd. (currently, MIRARTH HOLDINGS, Inc.)
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Related Topics

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Major Awards

  • Chambers Asia-Pacific 2026 / Leading Individual (Projects & Energy)
  • The Legal 500 Asia Pacific 2026 / Leading partners (Projects and energy)
  • IFLR1000 2025 / Highly regarded (Project development, Project finance)
  • asialaw 2025 / Notable practitioner (Energy, Banking & Finance)
  • The Best Lawyers in Japan™ (2027 edition) (Energy Law, Project Finance and Development Practice, Structured Finance Law, Banking and Finance Law)

Profile

Background

The University of Tokyo (LL.B., 2002)
　
assigned to the Ministry of Economy, Trade and Industry, Government of Japan(2005-2006)
　
University of Virginia School of Law (LL.M., 2009)
　
Clayton Utz, Brisbane, Australia (2009-2010)
　
Seconded to IB Products Group, Mizuho Securities Co., Ltd. (2010-2011)
　

Qualifications & Affiliations

admitted in Japan, 2003; New York, 2011
membership: Daini-Tokyo Bar Association, New York State Bar Association

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