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Service Rates

Review our rate descriptions and pricing schedules for business customers. For information on our other rates or detailed information, please view our filed tariff provisions.

Electric Service Rates

This service is for small commercial and industrial customers with average usage less than 10,000 kWh per month or 200 kW of demand.

Rates for Delivery Service
Customer Charge $10.00/month
Distribution Charge* 5.489 ¢/kWh
Transmission Charge 2.282 ¢/kWh
Transition Charge (0.103) ¢/kWh
Energy Efficiency Charge 0.836¢/kWh
Renewables Charge 0.050¢/kWh
Distribution Solar Charge 0.114¢/kWh

* Includes: Basic Service Adjustment Factor (0.113)¢, Residential Assistance Adjustment Factor 0.436¢, Storm Fund Replenishment Adjustment Factor 0.359¢, Pension/PBOP Adjustment Factor 0.156¢, Revenue Decoupling Mechanism Factor 0.195¢, Net CapEx Factor 0.441¢, Attorney General Consultant Expenses Factor 0.000¢, Solar Cost Adjustment Factor 0.026¢, Smart Grid Distribution Adjustment Factor 0.022¢, Net Metering Recovery Surcharge 0.669¢, Renewable Energy Recovery Factor 0.087¢ and 2017 Tax Act Credit Factor (0.024)¢.

In addition to the rates for Delivery Service listed above, customers on Nantucket Island are also subject to the following Cable Facilities Surcharge (“CFS”) for the two submarine cables that serve the island:

Cable Facilities Surcharge
Summer (June-Sept.) 0.987¢/kWh
Winter (Oct.-May) 0.861¢/kWh
Rates for Supplier Services

View our Supply Costs area for details on our Basic Service pricing.

This service is designed for commercial and industrial customers with average use exceeding 10,000 kWh per month and demand not exceeding 200 kW.

Rates for Delivery Service
Customer Charge $25.00/month
Distribution Demand Charge $8.50/kW
Distribution Energy Charge* 1.938¢/kWh
Transmission Charge 2.122¢/kWh
Transition Energy Charge (0.101)¢/kWh
Energy Efficiency Charge 0.836¢/kWh
Renewables Charge 0.050¢/kWh
Distribution Solar Charge 0.086¢/kWh

* Includes: Basic Service Adjustment Factor (0.085)¢, Residential Assistance Adjustment Factor 0.327¢, Storm Fund Replenishment Adjustment Factor 0.168¢, Pension/PBOP Adjustment Factor 0.116¢, Revenue Decoupling Mechanism Factor 0.146¢, Net CapEx Factor 0.363¢, Attorney General Consultant Expenses Factor 0.000¢, Solar Cost Adjustment Factor 0.019¢, Smart Grid Distribution Adjustment Factor 0.016¢, Net Metering Recovery Surcharge 0.503¢, Renewable Energy Recovery Factor 0.087¢ and 2017 Tax Act Credit Factor (0.018)¢.

In addition to the rates for Delivery Service listed above, customers on Nantucket Island are also subject to the following Cable Facilities Surcharge ("CFS") for the two submarine cables that serve the island:

Cable Facilities Surcharge
Summer (June-Sept.) 1.344¢/kWh
Winter (Oct.-May) 1.049¢/kWh
Rates for Supplier Services

View our Supply Costs area for details on our Basic Service pricing.

Special Clauses and Conditions

Customers on Rate G-2 and G-3 are eligible to receive a discount for high voltage metering and transformer ownership (high voltage delivery) if the customer meets the criteria of the discount.

What is Demand?

For more information about demand, see our Frequently Asked Questions.

This service is primarily available for large commercial and industrial customers with demand greater than 200 kW.

Peak Hours: Peak hours will be from 8:00 a.m. to 9:00 p.m. daily on Monday through Friday, excluding holidays.

Off-Peak hours will be from 9:00 p.m. to 8:00 a.m. daily Monday through Friday, and all day on Saturdays, Sundays, and holidays

Rates for Delivery Service
Customer Charge $223.00/month
Distribution Demand Charge $5.76/kW
Distribution Charge (Peak Hours*) 1.694¢/kWh
Distribution Charge (Off-Peak Hours*) 1.094¢/kWh
Transmission Charge 2.063¢/kWh
Transition Energy Charge (0.095)¢/kWh
Energy Efficiency Charge 0.836¢/kWh
Renewables Charge 0.050¢/kWh
Distribution Solar Charge 0.053¢/kWh

* Includes: Basic Service Adjustment Factor (0.053)¢, Residential Assistance Adjustment Factor 0.204¢, Storm Fund Replenishment Adjustment Factor 0.133¢, Pension/PBOP Adjustment Factor 0.069¢, Revenue Decoupling Mechanism Factor 0.091¢, Net CapEx Factor 0.237¢, Attorney General Consultant Expenses Factor 0.000¢, Solar Cost Adjustment Factor 0.012¢, Smart Grid Distribution Adjustment Factor 0.010¢, Net Metering Recovery Surcharge 0.315¢, Renewable Energy Recovery Factor 0.087¢ and 2017 Tax Act Credit Factor (0.011)¢.

In addition to the rates for Delivery Service listed above, customers on Nantucket Island are also subject to the following Cable Facilities Surcharge ("CFS") for the two submarine cables that serve the island:

Cable Facilities Surcharge
Summer (June-Sept.) 0.910¢/kWh
Winter (Oct.-May) 0.702¢/kWh
Rates for Supplier Services

View our Supply Costs area for details on our Basic Service pricing.

Special Clauses and Conditions

Customers on Rate G-2 and G-3 are eligible to receive a discount for high voltage metering and transformer ownership (high voltage delivery) if the customer meets the criteria of the discount. In addition, customers on Rate G-3 are eligible to receive discounts for service received at 115 kV.

What is Demand?

Read our Frequently Asked Questions.

All our rates are filed with the Massachusetts Department of Public Utilities. View our filed tariff provisions.

The following are basic descriptions of our street and area lighting service.

Streetlight Rates
S-1 Rate

Street and area lighting service is available under this rate contingent upon Company ownership and maintenance. The cost varies depending upon the type of light, size of light, overhead or underground service and pole requirement.

S-2 Rate

Street and area lighting service is available under this rate for installation owned by any city, town or other public authority. Service is supplied through overhead conductors. Service and maintenance by the Company will be provided at rates as outlined in the tariffs. This rate is not available to new customers after March 1, 1998. The cost varies depending upon the type of light, size of light, overhead or underground service and pole requirement.

S-3 Rate

Street and area lighting service is available under this rate only for installations served by underground conductors and involving a division of ownership between the customer and the Company. The cost varies depending upon the type of light, size of light, overhead or underground service and pole requirement.

S-5 Rate

Street and area lighting service is available under this rate to any municipal customer that has purchased designated street lighting equipment pursuant to G.L.C 164 § 34A and is otherwise eligible to receive retail delivery service under the Company’s street lighting tariffs.

S-6 Rate

Street and area lighting service is available under this rate for full service, underground served, decorative street and area lighting applications owned by the Company to any Customer, inclusive of municipalities, governmental entity, or other public authority. The cost varies depending upon the type of light, size of light, overhead or underground service and pole requirement.

Interconnection Requirements

View our policy and Standards for Interconnection Distribution Generation for customers with their own generating facilities.

The table below contains historical National Grid Electric Delivery Service Rates as approved by the Massachusetts Department of Public Utilities.

M.D.P.U. Number
Nantucket Electric Massachusetts Electric Effective Date
1-19-E 1-19-E June 1, 2019
1-19-D 1-19-D May 1, 2019
1-19-C 1-19-C March 1,2019
1-19-B 1-19-B February 1, 2019
1-19-A 1-19-A January 1, 2019
1-18-G 1-18-G November 1, 2018
1-18-F 1-18-F October 1, 2018
1-18-E 1-18-E August 1, 2018
1-18-D 1-18-D July 1, 2018
1-18-C 1-18-C May 1, 2018
1-18-B 1-18-B March 1, 2018
1-18-A 1-18-A February 1, 2018
1-17-E 1-17-E November 1, 2017
1-17-D 1-17-D August 1, 2017
1-17-C 1-17-C May 1, 2017
1-17-A 1-17-A March 1, 2017
1-16-I 1-16-G February 1, 2017
1-16-H 1-16-F November 1, 2016
1-16-G 1-16-E October 1, 2016
1-16-F 1-16-D September 1, 2016
1-16-E 1-16-C August 1, 2016
1-16-D Not Applicable July 1, 2016
1-16-C Not Applicable June 1, 2016
1-16-B 1-16-B May 1, 2016
1-16-A 1-16-A March 1, 2016
573 Not Applicable January 1, 2016
572 1260 November 1, 2015
567 1251 May 1, 2015
566 1249 April 1, 2015
565 1246 March 1, 2015

Summary of Rates