Answer:
Electricity is a secondary energy source that is produced when energy sources such as coal, natural gas, nuclear, and renewable energy are converted into electric power.
Most electricity is generated with steam turbines using fossil fuels, nuclear, biomass, geothermal, and solar thermal energy. Other major electricity generation technologies include gas turbines, hydro turbines, wind turbines, and solar photovoltaics.
Electricity generation is the process of generating electric power from sources of primary energy.The rotary electrical generator is very efficient by comparison.The conversion efficiency of a large machine can be as high as 98% or 99%.