At least with nuclear the costs are fully defined and up front at the project level with the system level costs more or less well known. With the wind and solar and to lesser extent batteries there is always being fooled by the lowish plant level costs but realizing even lower returns because the plants print nodally Or being a buyer/offtaker of energy and finding out the hedge was entirely ineffective Or being a ratepayer and getting transmission and ancillary charges on ya Either way pick your poison. But at least there is a plausible story to tell investors until the bill comes due later.