Leverage our world-class experience

Diamond is proud to have Mitsubishi Corporation as our parent company. Through Mitsubishi Corporation, we are aligned with sister subsidiary companies, all of which are leading players in the energy industry worldwide. Tapping into this wealth of global energy knowledge, experience and capabilities gives your clients the leverage they need to succeed.

Mitsubishi’s current activities have expanded far beyond its traditional trading operations to include investments and business management in diverse fields including:

  • Natural resources development
  • Manufacturing industrial goods
  • Retail
  • New energy
  • Infrastructure
  • Finance
  • New technology-related businesses.
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With approximately

Offices and Subsidiaries


Countries and Regions

and a network of over

Group Companies

Mitsubishi employs a multinational workforce of over


Globally, you’re in excellent company

Here are some other Mitsubishi subsidiaries that we leverage for our global reach in the energy industry.

A fully owned subsidiary of Mitsubishi Corporation, Diamond Generating Europe Limited (DGE) is a dynamic, forward-thinking company operating a tailored portfolio of renewable and energy-efficient assets in Europe, Africa and the Middle East. Our mission is to produce, supply and deliver efficient, flexible and affordable energy to customers across our region.

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Diamond Generating Asia (DGA) is a wholly-owned subsidiary of Mitsubishi that was established as a strategic foothold of Mitsubishi for power development and generation business in Southeast Asia and Taiwan. The company is promoting and providing power generation to a steadily growing customer base throughout the region.

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Diamond Transmission Corporation Limited (DTC) is a subsidiary wholly owned by Mitsubishi Corporation. DTC provides technical operations, maintenance, accounting and other services for transmission assets of Mitsubishi Corporation throughout the European region.

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As an oil and gas trading and marketing company, CIMA®is active on all major pipelines and markets across the US and Canada offering natural gas and other energy related services to customers ranging from small producers to large utilities.

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Mitsubishi Corporation Power Ltd. manages all of Mitsubishi Corporation’s power generating businesses in Japan. Its scope of business covers from the initial development to the commercial operation of thermal and renewable power generation.

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ElectroRoute is an independent energy trading and services company, established in 2011 active in the energy markets of Ireland, Great Britain and Continental Europe.

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