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1 Important Alert(s)

Storm Alert

8:00 AM Update
National Grid continued to make restoration progress overnight, and will be working through the day to bring power back to those customers who remain without it after Tropical Storm Isaias’ heavy rain and up to 60 mph winds on Tuesday. While most customers are targeted for restoration by tonight, some outages may extend into the weekend. Thousands of personnel are in the field working as quickly as possible while keeping safety a number one priority. Restoration times will be refined on this site throughout the day. To learn more about our efforts, click here.

Tariff Provisions

M.D.P.U. Number
Tariff Provision Nantucket Electric Massachusetts Electric Effective Date
Summary of Electric Delivery Service Rates 1-20-I 1-20-G August 1, 2020
Summary of Basic Service Rates 1-20-I 1-20-G August 1, 2020
R-1 (Residential - Regular) 621 1424 October 1, 2019
R-2 (Residential - Low Income) 622 1425 October 1, 2019
G-1 (General Service, Small C&I) 623 1426 October 1, 2019
G-2 (General Service, Demand) 624 1427 October 1, 2019
G-3 (Time-of-Use) 625 1428 October 1, 2019
S-1 (Street & Area Lighting, Company Owned Equipment) 626 1429 October 1, 2019
S-2 (Street & Area Lighting, Overhead Customer Owned Equipment) 627 1430 October 1, 2019
S-3 (Street & Area Lighting, Underground Division of Ownership) 628 1431 October 1, 2019
S-5 (Street & Area Lighting, Customer Owned Equipment) 629 1432 October 1, 2019
S-6 (Street & Area Lighting, Decorative Company Owned Equipment) 630 1433 October 1, 2019
Cable Facilities Surcharge Provision 631 not applicable June 1, 2020
Terms and Conditions for Distribution Service 1412 October 1, 2019
Terms and Conditions for Competitive Suppliers 1420 October 1, 2019
Terms and Conditions for Municipal Aggregators 1421 October 1, 2019
Terms and Conditions for Greenup Service 1117 January 21, 2008
Optional Enhanced Metering Service 1318 October 1, 2016
Optional Interval Data Service 1319 October 1, 2016
Off Cycle Meter Read for Switch of Supplier 1418 October 1, 2019
2nd Feeder Service Provision 1173 January 1, 2010
Net Metering Provision 1436 March 1, 2020
Qualifying Facility Power Purchase Rate P ("P-Rate") 1321 October 1, 2016
Standards for Interconnecting Distributed Generation 1320 October 1, 2016
Residential Automatic Meter Reading (AMR) Opt-Out Provision 1215 May 1, 2014
Tariff for Basic Service 1443 May 1, 2020
Basic Service Adjustment Provision 1438 March 1, 2020
Residential Assistance Adjustment Provision 1413 October 1, 2019
Storm Fund Replenishment Provision 1409 October 1, 2019
Pension/PBOP Adjustment Mechanism Provision 1439 March 1, 2020
Revenue Decoupling Mechanism (RDM) Provision 1415 October 1, 2019
Capital Investment Recovery Provision 1417 October 1, 2019
Attorney General Consultant Expenses (AGCE) Provision 1437 March 1, 2020
Solar Cost Adjustment Provision 1440 April 1, 2020
Transition Cost Adjustment Provision 1169 January 1, 2010
Energy Efficiency Provision 1416 October 1, 2019
Transmission Service Cost Adjustment Provision 1225 March 1, 2014
Storm Performance Adjustment Provision 1405 May 1, 2019
Service Quality Penalty Provision not applicable. 1230 March 1, 2014
Renewable Energy Recovery Provision 1361 September 1, 2019
Smart Grid Adjustment Provision 1442 May 1, 2020
SMART Provision 1408 August 1, 2019
Tax Credit Provision 1410 October 1, 2019
Vegetation Management Pilot Provision 1435 March 1, 2020
Electric Vehicle Program Provision 1447 May 1, 2020
Performance-Based Ratemaking Provision 1423 October 1, 2019
Grid Modernization Provision 1445 May 1, 2020