Fossil fuels, such as petroleum, coal, and natural gas, account for around 78–80 percent of global commercial energy. These high-carbon sources have deleterious effects on our environment, including heath, land, air, and rain. In today's modern world, two or more renewable energy sources are integrated to create a hybrid renewable energy system (HRES). The major goal is to increase electrical power generation while lowering costs, reducing the detrimental effects of burning fossil fuels, and improving overall system efficiency. Unlike a single-renewable source, a hybridized system can be used to provide high-efficiency and reliable electricity to end-users. In stand-alone or grid-connected modes, a HERS can be used.