Ar & Ar Design Construction is one of the leading engineering companies in the Republic of Armenia (www.ar-ar.am). The company has around 20 years experience in mechanical engineering and energy efficient construction. The company has rich experience of working with international companies and partners. One of the main directions that the company is involved in is energy efficient (renewable energy technologies) and innovative technology implementation in residential and commercial construction. The company is developing new “green” residential community with implementation of innovative energy efficient engineering systems. The brand of residential community is “Solar City”. The houses of community are zero energy consumption ones since they correspond to the requirements of German passive house concept and generating electricity with PV solar panels.