Quinbrook Infrastructure Partners

Co-Founders and Managing Partners David Scaysbrook and Rory Quinlan jointly lead the firm. Both spent over a decade at Macquarie Group's infrastructure division before launching Quinbrook in 2015. The duo maintains a flat partnership structure, with investment decisions made through the senior partnership group that includes regional heads in the US, UK, and Australia.

Quinbrook principally originates its own deals through a dedicated in-house development team rather than through competitive auctions or broker-led processes. The firm identifies favorable grid interconnection points, secures land rights, and progresses projects through permitting and offtake contracting. This originate-to-operate model is designed to capture development margin and retain control over asset quality.

Quinbrook is a specialist infrastructure investment manager that raises capital from external institutional investors. It is not a family office. The firm manages closed-end commingled funds and separate accounts on behalf of pension funds, sovereign wealth funds, and other institutional limited partners seeking dedicated exposure to the energy transition.

Quinbrook invests across the full lifecycle of energy infrastructure assets. It commits capital at the greenfield development stage, funds construction, and holds operating assets long-term. The firm will also selectively acquire late-stage development or repowering opportunities where it can apply its in-house engineering and commercial capabilities.

Quinbrook primarily structures and leads its own investments. The firm has not publicly promoted a co-investment club or systematic co-underwriting model with peer GPs. However, its fund vehicles are designed to accommodate co-investment by large limited partners on a deal-by-deal basis, which is standard practice for infrastructure fund managers of its size.

Quinbrook concentrates exclusively on three core OECD markets: the United States, the United Kingdom, and Australia. This geographic triangulation reflects the partners' own Macquarie backgrounds, the availability of large-scale renewable resource potential, and the presence of liquid power markets and transparent regulatory frameworks.

Quinbrook is purely thematic, investing only in energy transition infrastructure. Unlike diversified infrastructure funds that allocate a percentage to renewables alongside airports, toll roads, and utilities, Quinbrook's sole mandate is the build-out of low-carbon power assets. Additionally, its internal development capabilities mean it regularly takes on construction and merchant power price risk that many generalist infrastructure investors are not resourced to underwrite.