Constellation Energy has become the latest USA Utility to cancel its proposed new nuclear energy plant to be built in Maryland.Despite a Loan Guarantee from Department of Energy (DOE) as part of the US Green Stimulus,Constellation has found the economics of the Nuclear Reactors as unworkable.In fact this is keeping with the trend of other utilities in the Developed World who have found New Nuclear to be too expensive.While a number of cyclical factors are at play (Wind Energy has also been affected) in hindering the development of these plants,it seems a secular shift has occured.Finland has become the poster boy of a Nuclear Project Disaster with the main developer Areva bleeding from losses as time and cost overruns have almost doubled.The increaseing costs of environment and safety regulations has increase manifold since the last spurt of nuclear energy construction in the 1980s.The Nuclear Renaissance has proven to be a complete failure in the Western Countries.While China continues with its aggressive Nuclear Expansion plans,construction in the US has come to a virtual halt.Exelon which is the largest Nuclear Energy Operator in the USA has also halted developed of 2 new reactors in Texas.These Utilities have said that they need much higher energy prices and a carbon tax before going ahead with reaction construction.Note Exelon recently bought a Wind Energy Operator as Solar/Wind become the favored Green Energy choices.