The use of passive solar energy in housing involves the placement of the building for optimum benefit, the building design and position of suitable building components to make full use of sunlight for day lighting, passive heating, and/or passive cooling. Apart from saving energy, the primary benefit of a passive solar home is the improved comfort of its occupants.

My interest in renewable home energy is purely a selfish one; I want to retain as much of my earnings as possible and to spend it as want to. And I ultimately want to be able to live off the grid, which means no longer paying ever-increasing electricity bills.