Passive solar design - as a way to, integrates a combination of building features to reduce or even eliminate the need for mechanical cooling and eating and daytime artificial lighting by understanding how solar energy works.
Direct gain - solar radiation that directly penetrates and is stored in the living space.
Isolated gain systems - collect solar radiation in an area that can be selectively closed off or opened to the rest of the house.
Indirect gain - the collection, storage, and distribution of solar radiation using a thermal storage material, which then is transferred into indoor energy.
Trombe wall- an ancient technique uses materials including stone, metal, concrete, or water tanks to build walls that collect energy from the sunlight during the day.