In this particular study, before evaluation of renewable energy in buildings, type of renewablee energy and its great potential is analysed in Turkey context. In addition, this study put forwards the present and future energy source policy, each energy source contribution for suppliment of energy demand of Turkey including a range of illustrations. The major topics are included as follows:

* Current Energy Sector in Turkey, 

* Current Use of Renewable Resources and Potentials,

* Constraints of Renewable Energy in Turkey

Renewable energy in terms of solar power is the main subject of this preparation of this assignment. Initially, how solar energy can be converted to the useful electricity is explained and visualised with a number of figures for better understanding. 

Afterwards, the technological developments towards photovoltaics cells from the beginning to the present time is put forward. 

The study continues with the subject of a number of installation methods of photovoltaics to the buildings.

In the end of this topic, the main advantages and possible disadvantages of photovotaics, the market against photovoltaics in the world compared to the companies and countries are briefly noted.