Retrofit or Fully-integrated

31 kWp semi-transparent roof

Mounting standard modules on an existing building, without replacing any of the building skin, is known as retrofit solar electricity. It is often the lowest cost method.

Most commonly solar modules are mounted on a roof – whether sloped or flat does not matter; on a wall, often referred to as a building facade; or over windows to reduce sun glare as well as to produce electricity.

Building-Integrated means replacing some of the building roof, wall or other area with solar modules, and often these are of special construction. It is most commonly used when solar electricity is included in a new building, since the cost of some conventional building materials is avoided.

1kWp roof system for a private house	Fully integrated roof system for a house
50kWp system on a flat roof