The acquisition of SUSI Partners by specialist asset manager Gresham House, as first announced in September 2025, is now complete.

The integration of SUSI Partners into Gresham House creates one of Europe’s top 10 energy transition infrastructure platforms, with more than €3.1 billion in assets under management.[1]

The combination of SUSI Partners’ international mid-market equity and credit expertise across energy transition sectors – anchored in Europe and complemented by a growing platform in Asia – with Gresham House’s UK leadership in battery energy storage establishes an energy transition platform with uniquely comprehensive capabilities and a longstanding track record across key investment themes.

Going forward, the combined Energy Transition division will be led by Marco van Daele, who led SUSI Partners as CEO until closing of the transaction. SUSI Partners’ strategies and products will continue to be managed by the same teams, with the same commitment to investment excellence, client service and sustainability. Gresham House’s UK-focused strategies will continue to be managed by local personnel. The unified Energy Transition team will focus on growing the division by offering clients a wider range of strategies and products and leveraging both firms’ deep investment expertise.

The newly combined energy transition business forms part of the broader Gresham House organisation, which has total assets under management of €12.2 billion. In addition to energy transition, Gresham House offers deep expertise across sustainable real assets, including sustainable infrastructure and natural capital, underpinned by its position as one of the world’s top 10 natural capital managers.

For further details, read the full press release HERE.

[1] Combines AUM of SUSI Partners and Gresham House’s Energy Transition division, as of 31 December 2025. Ranking according to Indefi, June 2025 based on 10-year fundraising in European-focused renewables funds by European GPs (excluding industrial-affiliated players as of year-ending 2024).

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The information provided does not constitute an offer or invitation to acquire or sell any service or product referred to. Nothing contained herein should be deemed to be a prediction or projection of future performance of any investment or product. Past performance is not a guide to current or future performance. The value of investments and the income from them can fall as well as rise and is not guaranteed.

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The information provided does not constitute an offer or invitation to acquire or sell any service or product referred to. Nothing contained herein should be deemed to be a prediction or projection of future performance of any investment or product. Past performance is not a guide to current or future performance. The value of investments and the income from them can fall as well as rise and is not guaranteed.

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The webpage you are about to enter mentions and/or contains information on the SUSI Energy Transition Fund OECD (“SETF”), a Luxembourg-registered investment vehicle managed by SUSI Partners. SETF is only open to professional investors (or institutional/qualified investors, as such terms may apply in local jurisdictions) who qualify as „well-informed investors“ under Luxembourg’s 2007 law about Specialised Investment Funds.

The information provided does not constitute an offer or invitation to acquire or sell any service or product referred to. Nothing contained herein should be deemed to be a prediction or projection of future performance of any investment or product. Past performance is not a guide to current or future performance. The value of investments and the income from them can fall as well as rise and is not guaranteed.

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