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About us


Diamond Transmission Partners is composed of several investors each specific to a project partnership.

For details of the partners for each project, click links below:

DTC is a wholly owned subsidiary of Mitsubishi Corporation ("MC”) since 2012 which is one of the largest Japanese trading and investment houses. MC has established DTC in London as a holding company to integrate MC's investment activities in European transmission sector. As of January, 2018, DTC has 9 assets in the UK and Germany totalling circa 4.4GW and c.£3.6bn.

Visit Mitsubishi Corporation

HICL is a long-term equity investor in infrastructure. Its portfolio comprises more than 100 investments with value in excess of £2.0bn. HICL is present in a number of sectors including health, transport and education, both in the UK and overseas.

Visit HICL Infrastructure

CEPCON (Chubu Electric Power Company Netherlands B.V.) is a wholly owned subsidiary of Chubu Electric Power Co., Inc.("Chubu"), which as a whole Chubu group is a major transmission operator in Japan with responsibility for over 12,000km of transmission lines and 900 substations. Chubu's total assets as of March 2020 is £40.7 billion.

Visit Chubu

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Diamond Transmission UK Limited ("DTUK") is engaged by the Directors of Diamond Transmission Partners to provide management and financial services to Diamond Transmission Partners.

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