IBPSA (the International Building Performance Simulation Association) is a non-profit international society of building performance simulation researchers, developers and practitioners dedicated to improving the built environment. IBPSA consists primarily of a number of national affiliates. It is these regional affiliates that are the primary organisers of the association’s activities. IBPSA has a small international board of directors. Each of the regional affiliates is represented on the board. The regional affiliate for England is known as ‘IBPSA-England’. You can find more information about IBPSA at www.ibpsa.org. IBPSA and IBPSA-England operates entirely on a volunteer basis.