According to Article 21 of People's Republic of China (PRC) Environmental Protection Law, any unit or individual has the right to report environmental pollution. In the case of building photovoltaic on the roof of a neighbor's house, if you feel that this behavior violates relevant laws and regulations or affects your living environment, you can call the hotline 12369 to make a complaint or report to the local environmental protection department. Therefore, it is useful to report the photovoltaic construction on the roof of the neighbor anonymously to some extent.
In addition, some areas allow anonymous reporting, and the personal information of informants will be protected and will not be leaked.