It is somewhat bewildering to realize that we have come all this way in technology but somewhere something is always turning water into steam to drive a piston of some sort.
Solar photovoltaic doesn't involve steam. We can be solarpunk as well!
I guess hydro-power uses steam in the global water cycle so I'll give you that. Radio-Thermal Generators are all solid state, but not much power on earth comes from them.
There's actually a company called Helion which is trying to skip the steam turbine step completely with fusion energy. Although generally speaking you're correct, they're kind of the exception that proves the rule.
Which is exactly why when Einstein got the Nobel Prize when he discovered the photoelectric! Kind of a big deal when basically everything before that was turbine driven, as you mention.