Gregory J. Leng
Director, RETScreen International

Gregory J. Leng is the creator and director of the RETScreen Clean Energy Management Software at Natural Resources Canada’s CanmetENERGY research centre in Varennes, Quebec. The RETScreen Software is the world’s leading clean energy decision-support tool and is available in 36 languages covering 2/3 of the Earth’s population. RETScreen is used by more than 575,000+ energy professionals and decision-makers in every country, as well as by professors at 1,100+ universities and colleges for teaching and research.

Leng’s career is focused on the clean energy market, technology and finance interface and he has been working in the renewable energy and energy efficiency fields since 1987. Prior to joining NRCan, he was based in Hyderabad, India as the India Country Manager (dLA consultant) for the International Fund for Renewable Energy and Energy Efficiency. He obtained a master of science degree from the University of Massachusetts Lowell in energy engineering (solar energy engineering) and a bachelor of commerce degree (marketing and international business) from McGill University.