In passive solar design, the building is designed to make use of the sun to warm its walls, floors and roof during the winter, and to reject too much heat from the sun in summer. It is called passive because it does not use any mechanical or technical products like solar panels.

They often do but building a passive home is more of an architectural approach to building a home that focuses on low energy consumption quickly absorbing or releasing solar heat gain or breezes as needed. Although many Passive Solar Homes do use Solar Panels, especially those for Water heating and sometimes Energy, they are not an essential part of the design principle.

Sunlight is thermal energy.

Passive solar system, passive solar design, passive solar window....you get the idea :-)

well according to my research the active solar heating system captures solar radiation through mirrors and mirror plates. passive solar heating systems use the architectural design and construction material of a building.

With south-facing glass, passive solar heat can be used in heating any home or building.