Haw. Code R. § 16-601-111
Except for tariff filings of water carriers and motor carriers that are governed by sections 16-601-93 and 16-601-94, any public utility tariff additions or changes, other than tariff additions or changes which result in an increase in rates, fares, or charges or changes in any classifications, practices, or rules which would result in an increase in rates, fares, or charges, may be filed with the commission to become effective not less than thirty days after filing. The tariff page or pages to be added or changed shall be filed with the commission, together with a transmittal letter. The transmittal letter shall set forth the applicable information specified in section 16-601-74 and section 16-601-86, together with the latest available balance sheet and income statement, the justification for the proposed additions or changes, and the proposed effective date thereof. The transmittal letter shall have attached to it a certificate of service showing service on the consumer advocate at the time of filing. Two copies of the tariff page or pages, together with the transmittal letter, shall be served on the consumer advocate. The additions or changes to the tariff, unless suspended by the commission, shall become effective thirty days after filing with the commission in compliance with this section or at a later date as may be specified in the transmittal letter. Tariff filings not in compliance with this section will be rejected.
Haw. Code R. § 16-601-111