S.D. Codified Laws § 49-34-11.2

Notwithstanding §§ 57A-9-302, 57A-9-401, 57A-9-402, and 57A-9-403, all filings required under the uniform commercial code in order to perfect a security interest against the personal property or fixtures of a debtor public utility shall be made and maintained in the Office of the Secretary of State. If the financing statement covers goods of a debtor public utility which are or are to become fixtures, no description of the real estate or the name of the record owner thereof is required. Filing of a financing statement against the property of a debtor public utility is effective until released or terminated.