Impactful Returns

The transition towards a climate neutral energy system requires substantial capital investment. We are a Swiss-based infrastructure investment manager with an exclusive focus on, and a proven track record across, the wide spectrum of investment opportunities arising from the global energy transition. Our institutional clients benefit from attractive risk-adjusted returns while contributing to global climate neutrality.

2009 year of
€1.9bn investor commitments
2.7m CO2 savings in tonnes
~60 dedicated employees


A holistic and flexible approach is needed to address the opportunity the energy transition offers and our team unites the experience required to navigate this dynamic market. We provide access to private equity and credit investments in sustainable energy infrastructure which are characterised by stable returns, low correlation with traditional asset classes and a measurable positive impact on the climate.



We firmly believe that embedding ESG standards across our business operations and investment activities creates sustainable value for all of our stakeholders – from clients and their beneficiaries to employees, business partners and the communities in which we operate.



The transformation of the energy system requires new and innovative investment solutions. We work together on bringing these to life. As a growing company operating in a very dynamic environment, we are always on the lookout for new talent to reinforce our team.



Singapore -

SUSI Partners sets up Southeast Asian renewables platform

SUSI Partners has launched a utility-scale renewable energy platform dedicated to selected Southeast Asian markets in collaboration with regional developer Pacific Impact Development.


Zug/Zurich -

SUSI Partners holds first closing for third credit fund

SUSI Partners’ third credit vehicle held a first close in December 2022, bringing the firm's 2022 annual growth in aggregate commitments to 20%.