In the US, the government can't control energy production. Neither the President nor any other government official can declare "You will build a nuclear plant here" or "I want wind generators in the Rockies." These things are done by private industry in cooperation with local governments and public participation.
Many other countries can build such facilities by authoritarian decree. They can move swiftly in response to a perceived need. A democracy can be slow and clumsy because it requires many voices to be heard. Many such facilities require private investment from a wide variety of sources, most of whom expect profits or tax incentives. The complications are endless as environmentalists and others voice their concerns.
In the US almost everything is done by private industry including most of the space program, military weapons, communication networks, health care, etc. Tax dollars are awarded to bidders on some of these projects, and to universities for research, etc. But few government employees are involved. A major role of government is to regulate private industry- food, drugs, standards of safety, etc. They can say 'no' to an unsafe product, but they can't demand that a product be built.
Now consider the recent deep divide in Congress, in the Press, and on Main Street. Nothing got done these past many years. With Republicans now controlling every branch of government, some things will get done in the next few years (but you might not like them).