www.hdrinc.com/markets/energy/renewable-energy/project-types/pumped-storage

HDR is an employee-owned architectural, engineering and consulting firm with over 8,000 professionals in more than 185 locations worldwide. This staff includes some of the most experienced and capable engineers, regulatory experts, environmental scientists and project management professionals in the hydroelectric industry. HDR assists clients with the development of new hydropower projects from feasibility studies to project engineering, and with the modernization of existing hydropower facilities. Services for transmission and renewable-energy generation projects encompasses engineering, design, economic modeling and storage valuation, environmental sciences and regulatory support services for pumped storage hydropower.