The Consumer Advocate is considered to have an interest sufficient to maintain actions for judicial review and may, as of right and in the manner prescribed by law, intervene or otherwise participate in any civil proceeding which involves the review or enforcement of an agency action that the Consumer Advocate determines may substantially affect the interests of consumers.
S.C. Code § 37-6-607
2018 Act No. 258, Section 12, provides as follows:
"SECTION 12. This act takes effect upon approval by the Governor and applies to all cases, proceedings, petitions, or matters pending before the Public Service Commission or in any other court or venue on or after the effective date of this act."