A nuclear winter would likely be caused by a nuclear exchange and not nuclear power. That aside, China has is headed towards a similar spot climate wise:
Chinese scientists have warned that the country’s toxic air pollution is now so bad that it resembles a nuclear winter, slowing photosynthesis in plants – and potentially wreaking havoc on the country’s food supply.
China does have nuclear power and is seeking to build out more plants, but they can’t increase capacity fast enough (including with other energy sources) to replace their current reliance on fossil fuels.
Hopefully solar energy keeps dropping in price, although it won’t help if we’re already in the midst of a fossil fuel inspired nuclear winter.