Kiuas - Spirit of Ukko (in particular)
Lost horizon
Tyr
Human fortress - lord of earth and heavens heir
Gamma Ray - land of the free - (and others im sure, but it's the only album i have)
Blind Guardian
Persuader
Firewind
whether these are power metal is up for debate:
Ensiferum
Wintersun
There are tons more but that should get you started, those are my favorites