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[en] Highlights: ► The ground can be used as a storage tank to store hot or cooled water in Jordan. ► The stored energy in rocks was utilized to provide heating cooling, and hot water for homes. ► The underground geothermal horizontal loop in rocks was technically approved. ► It can extract up to six times the heat energy that used in electrical energy. ► Its low capital cost and zero environmental emissions. - Abstract: Earth Energy Systems (EESs) utilize the thermal energy that is stored in rocks and ground water under the earth’s surface to provide homes, commercial buildings, and industrial facilities with heating, cooling, and hot water. Solar energy is absorbed by the earth’s surface which stores up to 50% of the sun’s energy that radiates on it. Consequently, the earth and groundwater’s temperature is relatively constant compared to that of the surface air. The earth’s temperature is generally warmer than the surface temperature during the colder months of the year, while it is generally cooler than the surface temperature during the hot months of the year. In this study, energy was extracted from the underground rocks at Mutah University in Jordan by using the geothermal horizontal closed loop system. Two-meter holes were drilled into the earth’s surface; copper pipes were inserted for liquid to pass through them into the heat exchange system. Then, the liquid was circulated back into the ground. Several temperature differences were measured and reported in the cold and hot months. The experimental results showed that thermal energy stored in rocks can be used to provide homes with heating, cooling, and hot water with low capital cost and zero environmental emissions.