Currently, there are no nuclear power plants scheduled for construction in the US. Everybody with plans to build one hasn’t had a reactor design approved, while nobody is planning to use any of the approved designs. This follows a period in which only three new reactors have entered service since 1990. Despite its extremely low carbon footprint, nuclear power appears to be dead in the water.
On Friday, the Trump administration issued a series of executive orders intended to revive the US nuclear industry. These include plans to streamline the reactor approval process and boost the construction of experimental reactors by the Department of Energy. But they also contain language that’s inconsistent with other administration priorities and fundamentally misunderstands the use of nuclear power. Plus, some timelines might be, shall we say, unrealistic: three new experimental reactors reaching criticality in just over a year.
Slow nukes
The heyday of nuclear plant construction in the US was in the 1970s and ’80s. But the 1979 partial meltdown at the Three Mile Island plant soured public sentiment toward nuclear power. This also came at a time when nuclear plants typically generated only half of their rated capacity, making them an expensive long-term bet. As a result, plans for many plants, including some that were partially constructed, were canceled.
In this century, only four new reactors on existing plant sites have started construction, and two of those have since been cancelled due to delays and spiraling costs. The two reactors that have entered service also suffered considerable delays and cost overruns.
While safety regulations are often blamed for the construction costs, researchers who studied construction records found that many delays simply arose from workers being idled while they awaited equipment or the completion of other work on the site. This may indicate that the lack of a well-developed supply chain for reactor parts is a significant contributor. And the last major changes in safety regulations came in response to the Fukushima meltdown and explosions, which identified key vulnerabilities in traditional designs.

When the NRC was formed, every branch of the military had their own plans for nuclear reactors and so all military use is explicitly exempted from NRC oversight.
Trump officials plan to use this as a loophole to build power plants for civilian power on the footprint of a military base so as to claim exemption from pretty much every form of state AND federal regulation.