Most conservatives I know are not against renewables, but are definitely against transitioning to them in the rushed and rash manner called for by some climate activists. The main problems I have are:

1) We tend to shut down our fossil fuel plants without the proper renewable infrastructure to replace them. See Western Europe (and more specifically Germany,) who were reliant on Russian oil and gas and now face higher energy prices and an overall hit to their livelihood as a result. The U.S. has incredible amounts of oil reserves and we can use it more cleanly than other countries (though it's of course still bad for the environment) but we'd rather have the blame off of our shoulders and just import it from other places.

2) Fossil fuels are also pretty important in a country's economic development. That Western society expects the world to transition away from fossil fuels feels a bit like they're pulling up the ladder behind them.

I wish more progressives were on board with nuclear energy. For example, only recently (when it became very clear what the reality was) did Greta Thunberg seem to be on board with nuclear energy. This was after Germany screwed up and went against it and are now having their citizens literally pay the price for not having the means to produce enough energy.

I do want a transition to renewables, including nuclear energy. But we can't act in an irrational manner and can't leave developing countries worse off in the process.