re: Need help with power in my hips.

First, I'd recommend looking at warmups. I use KB swings in warmups for squats and deads to get my hips firing explosively before I start my working sets.

Swings, romanian deadlifts, reverse hyper, hip thrusts and monster walks will all help build strength.

A simple tweak to swings is to loop a band anchored behind you around the front of the hips. As you swing, you'll have to fire the glutes. You can use this in squat warmups to focus on activation patterns for the glutes/hips too. Just do air or goblet squats with that band position.