At the department of mechanical engineering, college of engineering, university of Baghdad, a master thesis was discussed entitled “effect of using integrated construction with solar panels on saving energy of low-energy houses” submitted by the student (Hussam Kadhim Kamil). The importance of this study stems from the fact that buildings designs consume more energy for several purposes, as well as generating gases polluting the environment as a result of global warming, so the examinations of this study were carried out in the holy city of Karbala where the researcher performed his experiments during calm weather to measure temperature of internal space, surfaces of internal and external walls and testing the effect of shading on the temperature of interior space and electric power generation. The researcher built a computer program to calculate cooling and heating load, gained energy to show the effects of complex shading and building surface according to three types of houses, the first of the traditional construction, the second of low energy, while the third of complex low energy according to Karbala conditions. The results showed (110.38 kWh) for heat load in the screening room, (1000.54 kWh) of energy generated in heating environment, (1852.31 kWh) of consumed power in cooling environment and that generated by solar panels is (1286.37 kW) per hour. The results showed that temperature and cooling load decreased in low energy house when integrated with solar panels, while cooling load of the building has increased for the same building. Seasonal heating load was (33938 kWh) for the traditional building, (23489 kWh) for low energy building and (24245 kW per hour) for the buildings using solar panels. Electric power generated by panels was (14438 kWh), while seasonal cooling load was (28481 kWh) for traditional building, (21551 kWh) for low-energy building, (18129 kWh) for low-energy building integrated with solar panels and energy generated by solar panels was (28159 kWh). Thesis was supervised by assistant professor Dr. Karima Ismail Amouri, and the discussion committee was consisted of assistant professor Dr. Abdul Jabbar Neima Khalifa as chairman and membership of assistant professor Dr. Najim Abd Jassim and Dr. Issam Mohammed Ali.