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We harness the power of business to create a more sustainable world. We have more than 20 years' experience as specialists in working on climate finance and carbon neutrality solutions.


We work with more than 300 clients in 34 countries, working across all sectors and industries to meet each client's unique sustainability goals. See some examples of our work:


To us, being a good advisor and a good solutions provider are one and the same. We offer:


We know you can't wait. Climate finance reduces emissions today:

Browse our project map, read about our criteria and quality, view how projects meet the Sustainable Development Goals (SDGs)

< The Team

Robert Koltun

Non-Executive Director

Robert Koltun - Non-Executive Director

Rob is Director and CEO of RNK Global Development Acquisition Corp; and Co-founder and Managing Member of RNK Capital LLC, an investment advisory firm that directs and manages investments primarily in the environmental and emissions markets. Prior to forming RNK Capital, Rob acted as a Portfolio Manager for LRL Capital Partners, where he directed the energy sector investments. Previously, Rob was a proprietary trader for First New York Securities, and a Principal and Senior Broker of Natsource LLC. Rob holds a B.S. in Economics from Vassar College, and a J.D. from the Benjamin N. Cardozo School of Law. Rob has served as a Director of Natural Capital Partners since 2008.