The Constant Group is an international energy and infrastructure advisory and management consulting firm established in 1997. The firm employs experts with broad experience in all aspects of energy project development, with a strong focus on conventional and renewable energy as well as energy efficiency and demand-side management.

Constant Group supports project sponsors, donors, project developers, investors, and financial institutions via the project identification, analysis, pre-investment studies, full feasibility studies, and technical due diligence. They also assist in arranging and designing project financing for project preparation and implementation.

Over the past decade Constant Group has focused on developed and emerging markets, specializing on Eastern Europe, Newly Independent States of Former Soviet Union, Latin America, and Southeast Asia. Their experts all have unique work histories serving as project developers, Government and private advisers, engineering managers, financial investors, operational managers and entrepreneurs.