(a) If the Commissioner finds that a rate is not in compliance with § 2604 of this title, or that a rate had been set in violation of § 2616 of this title, the Commissioner shall order that its use be discontinued for any policy issued or renewed after the date of the order and the order may prospectively provide for premium adjustment of any such policy then in force. The order shall be issued within 30 days after the close of a hearing, if one is requested by the insurer, or within a reasonable time as fixed by the Commissioner. The order shall expire 1 year after its effective date unless rescinded earlier by the Commissioner.
(b) If the Commissioner disapproves a rate under subsection (a) of this section, disapproval shall take effect not less than 15 days after its order and the last previous rate in effect for the insurer shall be reimposed for a period of 1 year unless the Commissioner approves a rate under subsection (d) or subsection (e) of this section.
(c) All determinations made by the Commissioner under this section shall be in accordance with accepted actuarial standards on the basis of findings of fact and conclusions of law.
(d) For a period of 1 year after the effective date of a disapproval order under subsection (a) of this section, no rate adopted to replace one disapproved under such order may be used until it has been filed with the Commissioner and approved within 30 days thereafter.
(e) Whenever an insurer has no legally effective rates pursuant to subsection (a) of this section, the Commissioner shall, on the insurer's request, specify interim rates for the insurer that are adequate to protect the interests of all parties. The Commissioner may order that a specified portion of the premiums be placed in a special reserve established by the insurer. When new rates become legally effective, the Commissioner shall order the reserved funds or any overcharge in the interim rates to be distributed appropriately, except that minimal adjustments may not be required.