Md. Code Ann., Pub. Util. § 7-531

The Commission shall establish specific procedures and time frames for the review and adjustment of qualified rate stabilization charges at least once each year, within 90 days before the anniversary date of the issuance of the rate stabilization bonds, to correct any overcollections or undercollections of the preceding 12 months and to ensure the expected recovery of amounts sufficient to timely provide all payments of debt service and other required amounts and charges in connection with the rate stabilization bonds.