Solar Buildings - Another approach to the design of sustainable buildings is to install on buildings either passive solar systems to reduce the energy needs of a building or active solar systems such as solar hot water systems or solar photovoltaic panels to produce electricity. Above is a photograph of the K2 sustainable apartments in Windsor, Victoria, Australia that are built with not only both passive solar and solar photovoltaic systems, but also are made of recycled materials and include rainwater collection on the roofs.
