Skip navigation

Expert Network on Second Opinions (ENSO)

ENSO is a global network of trusted non-profit research institutions and reputable experts on climate change and other environmental issues, covering a range of technical expertise and regional experience to meet the evolving needs of the green bond market.

Inactive project


As a member organization of the ENSO, SEI provides Second Opinions on institutions and companies´ Green Bond Framework and guidance for assessing and selecting eligible projects for green bond investments and assesses the framework´s robustness in meeting environmental objectives.

Second Opinions are normally restricted to an evaluation of the mechanisms or framework for selecting eligible projects at a general level. ENSO network members do not validate or certify the climate effects of single projects, and thus, has no conflict of interest in regard to single projects.

Project Team

Heidi Tuhkanen
Heidi Tuhkanen

Senior Expert (Environmental Management Programme)

SEI Tallinn

Richard J.T. Klein
Richard J. T. Klein

Team Leader: International Climate Risk and Adaptation; Senior Research Fellow

SEI Headquarters

Adis Dzebo
Adis Dzebo

Senior Research Fellow

SEI Headquarters

Design and development by Soapbox.