There isn't. But existing nuclear-power (where the environmental cost is already paid) isn't perceived "green", even though we can get stable "free" power for y

There isn't. But existing nuclear-power (where the environmental cost is already paid) isn't perceived "green", even though we can get stable "free" power for years and years and years. The "Green shift" is fundamentally not scientific, but driven by emotions and buzzwords, and hand-wavey things which can appear to be environmentally friendly or in some cases, just pure environmental accounting cheating/fraud (like moving your emissions to another country instead). What all professional politicians really care most about though is their own personal reelection, and you can't get reelected without appealing to a wide enough audience. Doing "green" things is their current strategy to appeal to (non-rational perceptions held by) younger demographics.