The environmental impact of electricity generation is significant because modern society uses large amounts of electrical power. This power is normally generated

Electricity generation

Electricity generation is the process of generating electric energy from other forms of energy.The fundamental principles of electricity generation were discovered during the 1820s and early 1830s by the British scientist Michael Faraday...

 at power plants that convert some other kind of energy into electrical power. Each system has advantages and disadvantages, but many of them pose environmental concerns.
The amount of water usage is often of great concern for electricity generating systems as populations increase and droughts become a concern.