What department did the owner complain about the power cut?

If the property restricts the owner from buying electricity, the owner can complain to the property management department of the local housing authority, which is the institution that supervises the behavior of the property company. In addition, the owners' congress also has the right to request the replacement of the property company.

According to the Property Law of People's Republic of China (PRC):

Eighty-first owners can manage their own buildings and ancillary facilities, but also entrust property services companies or other managers to manage them. The owner has the right to replace the realty service enterprise or other managers selected by the construction unit according to law.

References:

The State Council legislative affairs office/article/fgkd/xfg/fl/index.shtml? six