The council may give appropriate consideration in all proceedings to
- (1) the amounts expended by a utility for research on generation and transmission of the form of energy furnished by it and the environmental effect thereof,
- (2) the amounts expended by such utility for promotion, including advertising, of the use of the form of energy furnished by it and
- (3) the relationship between such expenditures.
(1971, P.A. 575, S. 14.)