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Innovative thinking applied to a transparent, winning commercial approach.


Greenhouse Capital is led by Duncan Stewart (BSc, PGDipSci.). With expertise rooted in the natural sciences, Duncan is a multi-faceted entrepreneur with over two decades of experience as an investor, business founder, CEO and advisory board member. His ventures focus on environmental, technology, investment and not-for-profit enterprises.

Duncan is widely recognised as a leading Kiwi expert in clean tech and sustainably minded economic growth. He has founded, grown and sold award-winning technology businesses and assisted the delivery of over $1bn of public and private infrastructure. Currently he keeps himself busy with leadership and advisor positions at Drive Electric, Mantis Digital, and EH&S compliance software company CS-VUE. When he’s not busy, he keeps busy on the Auckland Harbour.

Duncan is a sought-after venture expert for good reason. His hands-on approach to finance and project management execution, his top-tier team of accounting, tech and legal professionals and his unparalleled network of specialised investors will ensure your company grows to its full potential.


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"Duncan's skill set and market knowledge make him an excellent asset to any company."

Phillip Mills, CEO Les Mills