Storm's End reads:
If you win dominance, instead of claiming 1 power for House, you may claim 1 power each for 2 different House Baratheon characters.
Melisandre reads:
Renown.Claim 1 additional power when you win dominance, and when you win an unopposed Intrigue or Power challenge.
If you have both in play (and another Baratheon character) and win dominance what is the result?