LAWYER PROFILE
Mizuki Koshimoto

Mizuki Koshimoto

Asia-Pacific 2026

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Ranked in 1 practice area

Contributions and articles

2 Global Practice Guides

About

Provided by TMI Associates

Practice Areas

Mizuki Koshimoto specializes in project and energy business, with a specific emphasis on the renewable energy sector. His comprehensive understanding of this sector positions him as an advisor to a diverse range of clients, including major international sponsors, financial institutions and infrastructure fund operators.

His expertise extends to advising on development, financing, and operation of renewable energy projects, such as battery storage projects, offshore and onshore wind farms, and biomass power plants, areas that are rapidly evolving in Japan. He regularly advises clients on energy project structures, joint ventures, and environmental value trading schemes, as well as issues arising under Japan’s Feed-in Premium regimes.

He is known among clients for his balanced perspective combining technical precision with business-oriented advice, especially in transactions that involve complex interactions among project operators, lenders, and regulators. His work contributes to Japan’s broader policy goals toward carbon neutrality and sustainable infrastructure development.

Career

October 2005 White & Case LLP, Tokyo

September 2010 White & Case LLP, New York

October 2011 Return to White & Case LLP, Tokyo

August 2013 Secondment to The Bank of Tokyo-Mitsubishi UFJ, Ltd.

August 2015 TMI Associates

January 2018 Partner

Professional Memberships

Admitted: Japan, 2005; New York, 2010; B-list of Brussels Bar, 2024

Publications

ESG 2025 - Japan | Global Practice Guides | Chambers and Partners

“Trading of Environmental Attributes: Issues with Tracking and Proposed Revisions”

(Infrato December 20, 2023: https://infrato.jp/25998/2/)

Recent Trends and Law Amendments Regarding Offshore Wind-Power Generation Business

(Infrato March 14, 2020: https://infrato.jp/15754/)

Ports & Terminals Japan

(Lexology - Getting The Deal Through: https://www.lexology.com/panoramic/tool/workareas/report/ports-and-terminals/chapter/japan)

Clients

Mizuki advises a diverse client base across international and domestic. His clients include:

Energy developers participating in renewable energy and infrastructure investments;

Infrastructure funds and institutional investors seeking long-term investments in Japan;

Independent power producers (IPPs) and sponsors entering the Japanese energy market;

He supports numbers of foreign investors entering the Japanese renewable energy market, advising on establishment their presence in Japan, corporate structuring, regulatory licensing, and local compliance matters, as well as expanding overseas through co-investment and partnership models.

Education

New York University School of Law

LL.M.

2010

Legal Training and Research Institute of the Supreme Court of Japan

2005

Keio University

L.L.B.

1997

Key sectors

Energy and UtilitiesEnvironmental and WasteFinancial InvestorsFinancial ServicesProperty, Construction and Infrastructure

Chambers Review

Provided by Chambers

Chambers Asia & Pacific

Projects & Energy: Domestic - Japan

Band 4
Band 4

Individual Editorial

Mizuki Koshimoto shows notable experience in the renewable energy sector, with a particular focus on offshore wind power projects. He acts on behalf of a range of clients, including multinational energy and securities companies.

Strengths

Provided by Chambers

  • Koshimoto is very commercially minded, understanding our business and having a great understanding of our needs.

    Projects & Energy: DomesticChambers Asia & Pacific
  • It was a complex project, but he provided tireless support as lender's counsel.

    Projects & Energy: DomesticChambers Asia & Pacific

Ranked Individuals at TMI Associates (22)

Japan

All Contributions (2)

Provided by TMI Associates

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