According to Nexstar Media Inc in 2022 About 50% of the power produced at Hoover Dam still goes to California. Nevada gets about 22% and Arizona gets 20%. Contracts managed by the Department of Energy control the power distribution, and Native American tribes are also among the dam's customers. But what is this dam's history and how did it come to be? Why is the hoover dam so famous? Is the Hoover Dam the biggest dam in the world? Facts about Hoover Dam.