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maincubes captures €2.5b in debt financing to accelerate growth in European data center market
Transactions - JANUARY 14, 2026

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maincubes captures €2.5b in debt financing to accelerate growth in European data center market

by Kali Arevalo

maincubes, a European data center operator majority-owned by Digital Transformation Capital Partners (DTCP), has secured €2.475 billion ($3 billion) in platform debt financing to strengthen its long-term capital base and unlock the next phase of growth across its European portfolio.

The financing is composed of €1.775 billion ($2 billion) of committed facilities, with an additional €700 million ($816 million) uncommitted accordion, provided by a consortium of 11 banks and one institutional fund. maincubes confirmed the proceeds will be used to refinance its existing portfolio and fund the development of new data center projects.

The transaction supports the construction of maincubes’ fourth Frankfurt data center (FRA04) and the development of its new 200-megawatt Berlin campus, mainHub, in addition to the expansion of existing operational sites.

With a platform of approximately 400 megawatts, maincubes has become one of the largest, fastest-growing data

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