The application of renewable resources instead of fossil fuels has been considered a way to reduce carbon pollution in recent years. Geothermal energy is one of the renewable energy sources that harness the energy available in the Earth's layers to provide energy. Additionally, achieving high efficiency and optimizing the use of energy sources is one of the key challenges ahead to reduce environmental pollution. The use of multigenerational cycles is a suitable method for more optimal use of energy sources. In this study, a combined multigenerational geothermal cycle is examined from the perspectives of energy, exergy, economics, and the environment. The basis of the studied cycle is that a geothermal source is used to provide energy, and to utilize better the source used, an absorption cooling cycle, two organic Rankine cycles (ORC), two thermoelectric generators (TEG) units, a reverse osmosis (RO) desalination, and a Proton Exchange Membrane (PEM) electrolysis are used in the cycle. This cycle can generate electricity, cooling load, heat, hydrogen, and fresh water. The energy and exergy efficiencies of the cycle, as calculated after the investigation, were 54.24% and 54.74%, respectively. The net output power of this cycle is 104.8 kW, and its hydrogen and freshwater production rates are 31.23 kg/day and 6 kg/h, respectively. The absorption refrigeration cycle produces a cooling load of 16.74 kW. The cycle also provides 817.7 kW of heat for residential applications. A parametric analysis carried out on the cycle to demonstrate the influence of varying the properties of different points on the cycle outputs.
