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Transmission Rates

The formula rates shall be determined on the basis of estimated costs until actual data is available.

Payments made on such estimates shall be recalculated based on actual data for the service year, and an appropriate billing adjustment shall be made pursuant to Section 7 of the Tariff.

Network Integration

  • Network Integration Transmission Service customers shall pay their load ratio share of net transmission revenue requirements.
  • Network transmission customers shall pay their load ratio share of Transmission Scheduling, System Control and Dispatch Service.
  • Customers must take Reactive Supply and Voltage Control From Generation Sources Service. The Eversource System Companies are currently not charging for the provision of this service, but reserve the right to unilaterally file under Section 205 of the Federal Power Act to recover its costs in providing this service.

Other charges are as set forth in Part III and Schedule ​ES-4 of of ISO New England Inc. Transmission, Markets and Services Tariff, Schedule 21-ES. 

Point-to-Point

Long-Term Firm Point-To-Point Transmission Service On-Peak

  • The estimated transmission service charge is $6,250 / MW-Year.
  • Transmission Scheduling, System Control and Dispatch Services are included in the charge.
  • Customers must take Reactive Supply and Voltage Control From Generation Sources Service. The Eversource System Companies are currently not charging for the provision of this service, but reserve the right to unilaterally file under Section 205 of the Federal Power Act to recover its costs in providing for this service.

Other charges are as set forth in Section II and Schedule ​ES-2 of ISO New England Inc. Transmission, Markets, and Services Tariff, Schedule 21-ES.

Short-Term Firm Point-To-Point Transmission Service

  • The estimated on-peak transmission service charge is as follows:
    • Monthly STF Rate: $520.90 / MW-Month
    • Weekly STF Rate: $120.20 / MW-Week
    • Daily STF Rate: $​24.10 / MW-Day
    • The daily rate is capped at the weekly rate.
  • The estimated off-peak transmission service charge is as follows:
    • Monthly STF Rate: $​520.90 / MW-Month
    • Weekly STF Rate: $​120.20 / MW-Week
    • Daily STF Rate: $​17.20 / MW-Day
    • The daily rate is capped at the weekly rate.
  • Transmission Scheduling, System Control and Dispatch Services are included in the charge.
  • Customers must take Reactive Supply and Voltage Control From Generation Sources Service. The Eversource System Companies are currently not charging for the provision of this service, but reserve the right to unilaterally file under Section 205 of the Federal Power Act to recover its cost in providing this service.
  • Depending on circumstances, there may be Opportunity Costs.

Other charges are as set forth in Section II and Schedule ​ES-2 of ISO New England Inc. Transmission, Markets, and Services Tariff, Schedule 21-ES.

Non-Firm Point-To-Point Transmission Service

  • The estimated on-peak transmission service charge is as follows:
    • Monthly NF Rate: $​520.90 / MW-Month
    • Weekly NF Rate: $​120.20 / MW-Week
    • Daily NF Rate: $​24.10 / MW-Day
    • Hourly NF Rate: $​1.51 / MW-Hour
    • The hourly rate is capped at the daily rate and the daily rate is capped at the weekly rate.
  • The estimated off-peak transmission service charge is as follows:
    • Monthly NF Rate: $​520.90 / MW-Month
    • Weekly NF Rate: $​​120.20 / MW-Week
    • Daily NF Rate: $​​17.20 / MW-Day
    • Hourly NF Rate: $​​​0.72 / MW-Hour
    • The hourly rate is capped at the daily rate and the daily rate is capped at the weekly rate.
  • Transmission Scheduling, System Control and Dispatch Services are included in the charge.
  • Customers must take Reactive Supply and Voltage Control From Generation Sources Service. Eversource is currently not charging for the provision of this service, but reserve the right to unilaterally file under Section 205 of the Federal Power Act to recover its costs in providing this service.

Other charges are as set forth in Section II and Schedule ​ES-3 of ISO New England Inc. Transmission, Markets, and Services Tariff, Schedule 21-​ES.

Hydro Quebec DC Facilities

Long-Term Firm Point-To-Point Transmission Service Over Hydro Quebec DC Transmission Facilities

  • The transmission service charge is as follows:
    • Annual HQ-DC LTF Rate: $30,514.50 / MW-Year

Other charges are as set forth in ISO-NE Transmission, Markets and Services Tariff, Schedule 20A-​ES. Rates are based on estimated data and will be trued-up once actual costs are known.

Short-Term Firm Point-To-Point Transmission Service Over Hydro Quebec DC Transmission Facilities

  • The transmission service charge is as follows:
    • Annual HQ-DC LTF Rate: $30,514.50 / MW-Year
    • Monthly HQ-DC STF Rate: $2,542.88 / MW-Month
    • Weekly HQ-DC STF Rate: $586.82 / MW-Week
    • Daily HQ-DC STF Rate: $117.36 / MW-Day
    • The daily rate is capped at the weekly rate.

Other charges are as set forth in ISO-NE Transmission, Markets and Services Tariff, Schedule 20A-​ES. Rates are based on estimated data and will be trued-up once actual costs are known.

Non-Firm Point-To-Point Transmission Service Over Hydro Quebec DC Transmission Facilities

  • The transmission service on-peak rates are as follows:
    • Monthly HQ-DC NF Rate: $2,542.88 / MW-Month
    • Weekly HQ-DC NF Rate: $586.82 / MW-Week
    • Daily HQ-DC NF Rate: $117.36 / MW-Day
    • Hourly HQ-DC NF Rate: $7.34 / MW-Hour
    • The Hourly Rate is capped at the daily rate and the daily rate is capped at the weekly rate.
  • The transmission service off-peak rates are as follows:
    • Monthly HQ-DC NF Rate: $2,542.88 / MW-Month
    • Weekly HQ-DC NF Rate: $586.82 / MW-Week
    • Daily HQ-DC NF Rate: $​83.83 / MW-Day
    • Hourly HQ-DC NF Rate: $​3.49 / MW-Hour
    • The Hourly Rate is capped at the daily rate and the daily rate is capped at the weekly rate.

Refer to ISO-NE Transmission, Markets and Services Tariff, Schedule 20A-​ES for more information on this service. Rates are based on estimated data and will be trued-up once actual costs are known.