On January 1, 1997, a new Task started within IEA＇s PV Power Systems Program: Task VII. Objective of Task VII is to enhance the architectural quality, the technical quality and the economic viability of PV systems in the built environment and to assess and remove non-technical barriers for their introduction as an energy-significant option. The value of building integration for the introduction of grid connected PV is recognized around the world. Rooftop programs, aiming at large-scale application in the next century are carried out in many countries. In order to reach this widespread application, however, cost reductions still are essential. BIPV R&D should therefor focus on achieving these cost reductions, by optimizing integration concepts, by developing new building products and by the development of standardized products. Building integrated PV does not only offer perspectives for the next century. PV systems are installed today by building owners who appreciate the added value of solar roofs and facades, and who are willing to pay a premium for PV. This market potential must be captured and assisted. From the R&D side, this can be done by focusing on architectural issues and on non-technical barriers that impede short-term market penetration. The work in Task VII concentrates on all these aspects. The Task VII R&D strategy is to enhance systems technologies, to work on the architecture of building integrated PV and to assess and remove non-technical barriers that impede the widespread application of PV in the built environment.