65-407 C.M.R. ch. 321, § 5 - DAILY ESTIMATION OF COMPETITIVE ELECTRICITY PROVIDER HOURLY LOADS

A. Calculation of Customers' Hourly Loads. After each day, the transmission and distribution utility shall estimate hourly loads in that day for each customer at the point of delivery.

1. For customers that are telemetered, the estimate shall equal the customer's telemetered usage.

2. For customers that are not telemetered, including those with deemed load profiles, the estimates shall be equal to a load profile, from the appropriate customer profile group's set of profiles, that represents the day being estimated, based on the indicator(s) used to create the load profiles pursuant to Section 4.A.1; adjusted for the customer's estimated daily energy use. The profiles may be adjusted, as appropriate, in accordance with the approved profiling methodology to account for weather or other conditions that significantly affect load.

B. Calculation of Competitive Electricity Providers' Hourly Load Responsibilities

1. After each day, transmission and distribution utilities shall estimate hourly load responsibilities in that day for each competitive electricity provider. The estimate shall equal:

a. the sum of the telemetered hourly loads of the competitive electricity providers' telemetered customers, calculated pursuant to Section 5.A, and adjusted for line losses attributable to those customers between the customer delivery point and the point of bulk system metering; plus

b. the sum of the estimated hourly loads of the competitive electricity providers' profiled customers, calculated pursuant to Section 5.A, and adjusted for line losses attributable to those customers between the customer delivery point and the point of bulk system metering; plus

c. the hourly difference between the portion of the bulk system hourly metered loads attributable to retail sales and the total system estimated hourly loads calculated pursuant to Sections 5.B.1. a and 5.B.1.b, allocated to competitive electricity providers based on sales to profiled customers.

2. The calculations described in Section 5.B.1 shall be used to determine regional load obligation settlements.

a. Each transmission and distribution utility located in the ISO-NE control area shall report the hourly load responsibilities of each competitive electricity provider operating in its territory to ISO-NE in conformance with ISO-NE requirements as they may be changed from time to time.

b. Each transmission and distribution utility located in the Maritimes control area shall use the hourly load responsibilities of each competitive electricity provider operating within its territory to the Northern Maine ISA in conformance with Northern Maine ISA requirements as they may be changed from time to time.

c. All hourly load responsibility reported to the ISO-NE and Northern Maine ISA pursuant to this paragraph shall be differentiated by Load Asset I.D. Number or other unique identifying number used by the ISO-NE or Northern Maine ISA. All competitive electricity providers operating within the ISO-NE control area must be assigned at least one valid ISO-NE Load Asset I.D. Number or other identifying number. All competitive electricity providers operating within the Maritimes control area must be assigned at least one valid Northern Maine ISA Load Asset I.D. Number or other identifying number.

3. Line losses that occur when delivering a competitive electricity provider's energy within a transmission and distribution utility's local network are the sole responsibility of the competitive electricity provider, and will be allocated in a manner consistent with this principle. Line losses will reflect, at a minimum, variation between summer and winter and variation among voltage levels.

Notes

65-407 C.M.R. ch. 321, § 5