These figures[1] seem to indicate a ~50% decrease in carbon emissions for the same energy generated, but I'm not sure if it carries over directly to power plants.

Also, there's this fairly interesting (supposedly) zero-emissions natural gas power plant [2] but all of the news seem to be from 2018 so it's not getting a lot of attention.

[1] https://www.eia.gov/tools/faqs/faq.php?id=73&t=11

[2] https://www.netpower.com/