Ah, the awesome combination of towering hatred and towering ignorance!
No, the all-powerful hippies are not holding corporate cowering helplessly in their thrall.
Do you know how many actual, real nuclear power plant projects in the U.S. have been halted by environmentalist opposition? None. Zero. Nada. Zilch. It is impressive in fact how completely all attempts to halt nuclear power plants through protest failed.
But weren't all those nuclear power projects abandoned at the end of the 1970s halted by those d*mned "extreme environmentalists"? Nope. It was lack of electrical demand - those plants were planned under the idea that the rapid growth in electricity consumption of 1950s and 60s would continue forever.
The high capital costs of nuclear power plants make them unattractive investments compared to coal and natural gas plants. Only government subsidies (or a carbon tax) could make them cost competitive. It is good old profit-maximizing capitalism that has been holding nuclear power back.
There are in fact nuclear power plants starting construction right now - Units 3 and 4 at the Alvin W. Vogtle Electric Generating Plant in Georiga. The plants project might have started a couple of years sooner - but what was holding it back was were the federal subsidies demanded by the private companies. At the start of this years the final i's were dotted on those subsidies ($6.5 billion in loan guarantees) and the plants are going forward.