Kind of a weird headline. It makes it sound like this just happened. But it happened almost 2 years ago. Reading the article is also a bit confusing. I finally figured out they are only referring to utility scale solar and not total solar (utility plus behind the meter)

My overlay of the data: https://eia.languagelatte.com/

Raw data: https://www.eia.gov/electricity/data/browser/#/topic/0

Presumably we have dammed everything that made sense to (and some that didn't), so solar / wind will keep growing while hydro is unlikely to change (unless it drops).