HOFOR, also known as Hovedstadsområdets Forsyningsselskab, is a collaboration between Københavns Energi and water and wastewater companies in eight municipalities. With over 1,400 employees and an annual revenue of over 5 billion Danish kroner, HOFOR aims to create sustainable cities through environmentally-friendly supply solutions. Their services include water supply, district heating, natural gas, wastewater management, and wind power generation through Amagerværket. Collaboration is a key aspect of their operations, enabling the development of economically and environmentally robust supply solutions for the benefit of customers and society.