Some of these have been taken but I’ll include them anyway:
Still Loving You-Scorpions
November Rain-Guns ‘N Roses
Too Late For Love-Def Leppard
Bringing on the Heartbreak-Def Leppard
When a Blind Man Cries-Deep Purple
Who Wants to Live Forever-Queen
The Show Must Go On-Queen
Close My Eyes Forever- Lita Ford and Ozzy Osbourne
Mother Love-Queen
More Than a Feeling-Boston
I don’t know if this song qualifies as a power ballad but I love it:
Changes-Black Sabbath
How did I forget about those two? Definitely power ballads. Also, "Simple Man" by Skynard.