Power output of stellar feedback modes for each stellar mass regime. (Top left): Histogram showing the fractional stellar population of the three runs at one free-fall time, split into the mass regimes of 8–20 and 20–100 M_⊙. (Top right): Fraction of feedback power in each mass regime. (Bottom): Histograms showing the fraction of feedback power for FUV, EUV, and winds in each mass regime. Although there are more lower-mass stars, the feedback produced by them is less than 20% of the total feedback energy for all stars.