In this study, hybrid renewable energy power plants are introduced. These power plants use multiple renewable energy sources to generate electricity. An example of these hybrid renewable energy power plants is presented as an alternative to fossil-fueled power plants. By studying this example, we try to understand the capabilities of these power plants. This example uses a combination of the solar chimney, solar pond, air pumps, and multi-level underwater compressed air energy storage to design a fully functional power plant capable of replacing fossil-fueled power plants in off-shore areas. One of the main advantages of this hybrid power plant is that it can store some of the solar and wind energy in a non-electric manner, thus having better control over syncing the demand and supply of the power without using batteries. The idea behind this power plant was to show that maybe one source of renewable energy can not replace fossil fuel power plants. However, the right combination with a cohesive design for a specific location can make this substitution. After expressing the governing principles of all the sub-systems, two hypothetical hybrid renewable energies power plants were numerically investigated to examine the possible power output of the power plants on the hottest day of the year. The constant total daily power production of the introduced small-scaled power plant is from 2.2436 × 103 (kWh) up to 7.6229 × 103 (kWh), and the large-scale one is from 9.7191 × 106(kWh) up to 65.753 × 106(kWh). .
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