The best replacement for power clean is hang clean.

The best alternatives to power clean are rated as following:
★★★★★  hang clean
★★★★  deadlift
★★★★  clean
★★★  squat clean
★★  full clean
★★  clean and press
★  clean and jerk
★  olympic clean
★  clean pull
★  bent over row
★  front squat
★  barbell row
★  kettlebell swing
  power clean
  pendlay row
  hang power clean
  muscle clean

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Speaking about power clean, one probably shouldn't forget about foil shaver.

Other search terms related to power clean and their ratings are:
★★★★★ foil shaver
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power clean
hang clean
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