Who we are

SUSI Partners is a Gresham House company specialising in the origination, execution, and active management of mid-market energy transition infrastructure investments for institutional investors.

About SUSI Partners

As early movers in the energy transition, we have built comprehensive expertise across renewable energy, energy efficiency, energy storage, and electrification. Our capabilities span equity and credit investments across the infrastructure risk-return spectrum, supported by a proactive approach to risk management and value creation. We are a Europe-focused investor with a dedicated strategy for Southeast Asia and experience in selected OECD markets.

In January 2026, we became part of Gresham House. Together, we have formed a best-in-class global energy transition infrastructure platform with over EUR 3 billion AUM, ranking among the top 10 largest in Europe in this segment[1].

[1] Combines AUM of SUSI Partners and Gresham House’s Energy Transition division, as of June 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).

About Gresham House

Gresham House is a UK-headquartered specialist alternative asset manager focused on delivering financial returns for clients by investing in the global themes shaping our future, including the energy transition, natural capital, social impact, and growth capital.

LEARN MORE ABOUT GRESHAM HOUSE

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Team

Our investment strategies are executed and operationally supported by committed, talented and experienced professionals who work with integrity, an entrepreneurial spirit, and mutual respect. Today, they are a part of the Gresham House team.

GET TO KNOW THE GRESHAM HOUSE TEAM

Open positions

Office Manager Grevenmacher, Luxembourg

How to apply

Applications for open positions can be supplied through our human resources management platform, which you reach by clicking on “Apply” at the end of the respective job advertisement. To send in an unsolicited application or ask questions about working at SUSI, please send us an email.

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