A Boiling Water Reactor (BWR) is a type of nuclear reactor that generates electricity by using nuclear fission to heat water. In a BWR, water is boiled directly in the reactor core, producing steam that drives a turbine connected to a generator. This process converts the thermal energy from the fission of nuclear fuel, typically enriched uranium, into electrical energy. The steam produced in a BWR is then cooled and condensed back into water, which is recirculated to the reactor. This closed-loop system helps maintain efficiency and safety. BWRs are one of the two main types of commercial nuclear reactors, the other being the Pressurized Water Reactor (PWR).