The Moc uses 7 motors and 2 power boxes, I used Mould King 6L Power Function and 1M Power Function, 2 x 4.0 Power Modules, that's all I can divulged. The instructions are well worth purchasing. Note!!!! the video is not sped up.
https://rebrickable.com/mocs/MOC-233006/WW Bricks Studio/full-rc-lego-technic-42215-volvo-ec500-hybrid-excavator/#details