Jordan, as a developing country, has no significant oil resources with limited slow progress in the energy sector, and natural gas reserve which is not able to support a substantial production increase. With the increase of electricity demand 1, and in parallel to the global tropism to renewable energy, and its different resources; solar, hydropower, wind, tide, geothermal, and the problem of climatic changes, it became a high challenge with Jordan’s potential position to get benefit from the solar energy as one of the most important energy resources. Energy conservation and efficiency is an input-reduction method and a way of achieving sustainable design. Its main roll is to reduce the consumption of fossil fuels. Buildings consume energy in their operation for heating, lighting, and cooling, and also in their construction. A comprehensive understanding of energy-efficient buildings will improve architects’ designs, and consequently human lives and their interpretations. In total, the paper builds for setting up a base knowledge for thermal performance evaluation and investigation and opens a way for future research to take place.