310 CMR, § 21.08
The Department of Public Utilities shall determine the manner in which investor-owned end suppliers apportion and collect amounts necessary to defray the Assessment and applicable administrative costs. Nothing in 310 CMR 21.00 shall limit the authority of the Department of Public Utilities to rule on the propriety of any rates charged by any end supplier subject to its jurisdiction; provided that in making such a ruling the Department of Public Utilities shall consider the amount of the Assessment and, provided further, that such ruling shall not impose any condition inconsistent with the provisions or intent of M.G.L. c. 21A, § 18A, or 310 CMR 21.00. Compliance with any requirement imposed by the Department of Public Utilities shall not exempt any end supplier from the requirements of M.G.L. c. 21A, § 18A, or 310 CMR 21.00.
310 CMR, § 21.08