A system for collecting solar energy and fresh water may be disclosed. The system may include one or more assemblies of collector modules, each of which module may contain a photovoltaic cell and a thermal fluid. The thermal fluid may be used to heat a building and/or produce electricity. The assembly may further be coupled to a collection shaft which may collect water and/or disseminate light through a building. Various configurations of single modules, single assemblies, or multiple large-scale assemblies are also possible. If integrated with a house, the system may reduce the net energy consumption of the household.