Green Sahel Expertise (GSE) is an environmental consulting firm created by a group of environmentalists trained at leading European universities and institutions. It benefits from the expertise and effective support of national and international experts who have in-depth knowledge of the issues facing countries in the Sahel and the sub-region.

GSE addresses the environmental issues that the public and private sectors in the Sahel countries and the sub-region may face in the course of their activities, particularly in the following areas: extractive industries, oil and gas exploration and exploitation projects, water and electrification projects, as well as projects related to fisheries, water, agriculture and road development..