65- 407 C.M.R. ch. 322, § 4
The standard rate structure for generation service shall be identical to or less complex than the rate structure for transmission and distribution service. A less complex structure is defined as a structure in which multiple transmission and distribution rate elements are combined into one rate element.
The transmission and distribution utility shall test and approve a competitive electricity provider's standard rate structure within 20 business days of the time the competitive electricity provider requests the structure and shall implement the rate change in accordance with section 4(C). A transmission and distribution utility may provide a nonstandard rate structure at the request of a competitive electricity provider, in conformance with section 2(B).
The transmission and distribution utility shall implement a tested and approved change to a customer's rate level or rate structure on the customer's next normally scheduled meter read date if that customer's competitive electricity provider notifies the transmission and distribution utility of the change to the rate level or rate structure no less than 5 business days before the customer's next normally scheduled meter read date. Otherwise, the transmission and distribution utility shall implement the tested and approved change on the following normally scheduled meter read date for that customer.
The procedures for adjusting prior usage and charges for transmission and distribution service and standard offer service shall be governed by the provisions of Chapter 81 of the Commission's rules.
The transmission and distribution utility shall adjust the usage of all prior generation service and the charges contained in all prior bills it issued for generation service, under provisions identical to those governing adjustments to transmission and distribution service usage and charges.
Adjustments to data sent to the bulk power system administrator shall be made by the transmission and distribution utility in conformance with terms determined by the administrator, as they may change from time to time.
The transmission and distribution utility may provide billing for non-generation services or products at the request of a competitive electricity provider including an aggregator or broker, in conformance with Section 2(B).
65- 407 C.M.R. ch. 322, § 4