SDCL § 49-1-14: Attorney general as adviser to commission--Suits by commission.

The attorney general shall at all times, when requested, give the Public Utilities Commission such counsel and advice as they may from time to time require; and it shall be his duty to institute and prosecute, whenever requested by the Public Utilities Commission, any and all suits which such commission may deem it expedient and proper to institute, and he shall render to such commission such counsel, advice, and opinions in writing when requested, as are necessary to carry out the provisions of this title or any law of this state, according to the true intent and meaning thereof.