Attachment IV - ISO-NE Appendix 1.pdf

Billing Cost

Category Defined Term RFP/Contract Section Data Source (link) File Name Note

Capacity

Charges

ICAP Tag

(Rhode Island) B802(c)(1) https://www1.nationalgridus.com/files/InformationAnd

Forms/ICAP%20Tag%20Update%20for%20New%20PWR

%20Yr_MA.pdf

Update for New PWR Yr_[YEAR].pdf

The Installed Capacity (ICAP) for each Supplier is calculated by the ISO-NE from information provided by the Wholesale and Retail Market Settlement group at National Grid. The reported ICAP is based on the aggregate of each

Supplier’s customers’ contribution to the ISO-NE peak load during the preceding year. The individual customers’ contributions (tags) are estimated annually. The daily Supplier requirements are then calculated by tracking customer enrollment changes and shifting load accordingly.

Customers’ contributions to ICAP are estimated from either their actual peak hour use, if interval data are available, or load profiles.

Capacity

Charges

ICAP Tag

(Maine) B802(c)(1) See Above N/A

The Installed Capacity (ICAP) for each Supplier is calculated by the ISO-NE from information provided by the Wholesale and Retail Market Settlement group at National Grid. The reported ICAP is based on the aggregate of each

Supplier’s customers’ contribution to the ISO-NE peak load during the preceding year. The individual customers’ contributions (tags) are estimated annually. The daily Supplier requirements are then calculated by tracking customer enrollment changes and shifting load accordingly.

Customers’ contributions to ICAP are estimated from either their actual peak hour use, if interval data are available, or load profiles.

Capacity

Charges

Zonal Net

Regional Clearing

Price ($/kW-month)

B802(c)(1.2) https://www.iso-ne.com/markets-operations/market-performance/performance-reports/?document-type=Monthly%20Markets%20Reports

[YEAR]-[MONTH] Monthly Market Report.pdf

Refer to File applicable to the billing period for the appropriate Zone in which account is located. Zonal Net Regional Clearing Price is reported by

ISO-NE in section “12.2 FCM Payments and Charges”. Scroll down PDF until you arrive at Table that includes "Net Regional Clearing Pricing" column heading. Typically the following sentence is stated directly above the table

"The following table provides details on FCM charges to load at the Capacity

Zone level." Example, the “Monthly Market Operations Report January

2018”, the value for January 2018 in a table appears on page 56 as

$7.424518 .

Capacity

Charges

Zonal Capacity

Requirement

(MW)

B802(c)(1.4) https://www.iso-ne.com/markets-operations/market-performance/performance-reports/?document-type=Monthly%20Markets%20Reports

[YEAR]-[MONTH] Monthly Market Report.pdf

Refer to File applicable to the billing period for the appropriate Zone in which account is located. Zonal Capacity Requirement is reported by ISO-NE in section “12.2 FCM Payments and Charges”. Scroll down PDF until you arrive at Table that includes "Capacity Req" column heading. Typically the following sentence is stated directly above the table "The following table provides details on FCM charges to load at the Capacity Zone level."

Example, the “Monthly Market Operations Report January 2018”, the value for January 2018 in a table appears on page 54 as 2,469.

Capacity

Charges

Zonal Peak

Contribution B802(c)(1.5) https://www.iso-ne.com/markets-operations/market-performance/performance-reports/?document-type=Monthly%20Markets%20Reports

[YEAR]-[MONTH] Monthly Market Report.pdf

Refer to File applicable to the billing period for the appropriate Zone in which account is located. Zonal Peak Contribution is reported by ISO-NE in section “12.2 FCM Payments and Charges”. Scroll down PDF until you arrive at Table that includes "Peak Contrib" column heading. Typically the following sentence is stated directly above the table "The following table provides details on FCM charges to load at the Capacity Zone level."

Example, the “Monthly Market Operations Report January 2018”, the value for January 2018 in a table appears on page 54 as 1,766.

Other

Market

Charges

Loss Charge

Percentage

(Rhode Island)

B802(c)(3) https://www9.nationalgridus.com/non_html/shared_su pplier_load_asset.pdf shared_supplier_load_asset.pdf

Within file refer to Total for High Voltage Discount Customers within the table titled "TOTAL LOSSES APPLIED BY NATIONAL GRID ON AVERAGE

(DISTRIBUTION PLUS AVERAGE TRANSMISSION)." Subract 1 from Total and multiply by 100 to obtain Loss percentage. Estimate of approximate pass through based on information on this website.

Line loss kWh = (Account measured kWh)*(Loss Percentage /100)

Other

Market

Charges

Loss Charge

Percentage

(Maine)

B802(c)(3) https://www.maine.gov/mpuc/electricity/ElectricSuppli er/lineloss.pdf lineloss.pdf

Within file refer to Central Maine Power Co. subtransmission percentage.

Estimate of approximate pass through based on information on this website.

Line loss kWh = (Account measured kWh)*(Loss Percentage /100)

Other

Market

Charges

Auction Revenue

Rights

(ARR)

B802(c)(4) &

C800(b) https://www.iso-ne.com/participate/rules-procedures/tariff/market-rule-1 mr1_append_c.pdf

An Auction Revenue Right (ARR) is a right to receive revenues from the

Financial Transmission Rights (FTR) Auctions administered by the ISO. ARRs are categorized in the ISO settlement billing by the FTR Auction type (Long-

Term or Monthly) and FTR class type (On-Peak or Off-Peak) for which the

FTR revenues were collected.

APPENDIX 1

https://www1.nationalgridus.com/files/InformationAndForms/ICAP Tag Update for New PWR Yr_MA.pdf https://www1.nationalgridus.com/files/InformationAndForms/ICAP Tag Update for New PWR Yr_MA.pdf https://www1.nationalgridus.com/files/InformationAndForms/ICAP Tag Update for New PWR Yr_MA.pdf https://www.iso-ne.com/participate/rules-procedures/tariff/market-rule-1 https://www.iso-ne.com/participate/rules-procedures/tariff/market-rule-1 https://www.iso-ne.com/static-assets/documents/regulatory/tariff/sect_3/mr1_append_c.pdf