fizkes/Shutterstock Save for later Print Download Share Contracts for difference (CFDs) are the mechanism of choice to ensure operating price stability for nuclear newbuilds in Europe, but various countries planning CFDs to support new nuclear capacity are pursuing slightly different versions. The exact form the CFD takes — its price, duration and assumed load factor — has substantial implications for nuclear plant operators and is shifting as planners work to integrate new nuclear into grids with ever more variable renewables.