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A National Grid (Massachusetts) bill for 1,000 kWh on Schedule R-1 is $410.14 in November 2026 (41.0¢ per kWh, before tax). This calculator uses the National Grid (Massachusetts) Residential Regular tariff (Schedule R-1) and its riders. Type the kWh from your bill. The result shows each charge on a different line.
A National Grid (Massachusetts) bill for 1,000 kWh on Schedule R-1, with all charges, at the rates in effect at our last check on October 16, 2026:
| Billing month | Bill | Average price per kWh |
|---|---|---|
| November | $410.14 | 41.01¢ |
| Charge | Rate |
|---|---|
| Customer charge | $10.00 per month |
| Net distribution charge | 10.924¢ per kWh |
The average price includes the base rates and the riders. See all rates and riders, the example bills and the sources.
In 2025, the average National Grid (Massachusetts) home that bought its power from National Grid (Massachusetts) used 488 kWh a month and paid $164.45 a month (33.7¢ per kWh). The average for all homes in Massachusetts was $181.08 (596 kWh, 30.4¢ per kWh). These are yearly averages from the EIA-861 data of the U.S. Energy Information Administration, at the rates of 2025. See the average electric bill in Massachusetts and in each state. To turn the watts of an appliance into dollars, use the electricity cost calculator.
For an apartment: with the EIA average kWh of small homes in the Northeast, a 1-bedroom apartment (402 kWh) costs about $170.85 a month on R-1 and a 2-bedroom apartment (578 kWh) about $241.27 (November rates, before taxes). See the apartment electric bill at each utility.
Rate cases of National Grid (Massachusetts) that are pending or were decided since 2025, from the official documents. The calculator above uses the rates in effect now; a pending request is not in it.
Decided · multi-year plan step
Decided · multi-year plan step
Charging an electric car for 1,000 miles a month (300 kWh) overnight on weekdays adds this much to a 1,000 kWh November bill:
| Plan | A month | Per 100 miles | Charging period |
|---|---|---|---|
| R-1Residential Regular | $120.05 | $12.01 | All hours |
Use your own miles, car and charging time in the EV charging cost calculator.
No account needed: Massachusetts rate changes (RSS feed) · all rate changes (RSS feed) · a monthly reminder for your calendar · save your bills in this browser. Each month, the bill comparison shows what 1,000 kWh costs at every utility.
With the solar output of Boston (PVWatts), a 6 kW system makes about 7,648 kWh a year. On a home that uses 1,000 kWh a month, it cuts the yearly bill by:
| Plan | Bill a year without solar | Savings a year |
|---|---|---|
| R-1Residential Regular | $4,812.90 | $2,980.36 |
If each solar kWh replaces a kWh bought at the full price within the month (monthly net metering). A lower credit for the power you send to the grid, or a solar fee, makes the savings smaller. Use your own kWh, city and system in the solar savings calculator.
Terms on this tariff: Customer charge, Default service, Distributed generation, Distribution charge, Electric vehicle program charge, Energy efficiency charge, Grid modernization charge, Income qualified discount, Net metering, Renewable energy charge, Transition charge, Transmission charge. See the electric bill glossary.
Do you want solar panels or an electric vehicle? The Massachusetts solar calculator and the EV charging from solar calculator on ProSolarCalc estimate the savings and the payback. Also read what changed in the federal solar tax credit in 2026. Sri Murugan Systems also makes ProSolarCalc.
National Grid (Massachusetts) basic service (fixed price option): 17.185¢ per kWh, since August 1, 2026. See the basic service (fixed price option) history since 2021.
Do you have your hourly usage file? Compare National Grid (Massachusetts) plans and supplier offers with your Green Button data.
Why is my National Grid (Massachusetts) bill so high? Check your bill against National Grid (Massachusetts) R-1. See the National Grid (Massachusetts) rate changes. How does National Grid (Massachusetts) compare? See the monthly bill comparison.
What does an appliance cost to run on this tariff? Use the appliance cost tool with National Grid (Massachusetts) R-1.
These values come from the official tariff documents of National Grid (Massachusetts). The Massachusetts Department of Public Utilities approves these tariffs.
| Charge | Rate |
|---|---|
| Customer charge | $10.00 per month |
| Net distribution charge | 10.924¢ per kWh |
| Part | Rate | Effective |
|---|---|---|
| Energy efficiency reconciling factor | 2.4630¢ per kWh | May 1, 2026 |
| Energy efficiency charge | 0.2500¢ per kWh | January 1, 2003 |
| Total | 2.7130¢ per kWh |
| Item | Rate | Applies to | Schedule |
|---|---|---|---|
| Net transition charge | −0.029¢ per kWh | All kWh | Summary of Electric Delivery Service Rates, Rate R-1, M.D.P.U. No. 1-26-I (last change 3/1/26) |
| Net energy efficiency charge | 2.713¢ per kWh | All kWh | Summary of Electric Delivery Service Rates, Rate R-1, M.D.P.U. No. 1-26-I (last change 5/1/26) |
| Renewables charge | 0.05¢ per kWh | All kWh | Summary of Electric Delivery Service Rates, Rate R-1, M.D.P.U. No. 1-26-I (last change 1/1/03) |
| Net metering recovery surcharge | 2.451¢ per kWh | All kWh | Summary of Electric Delivery Service Rates, Rate R-1, M.D.P.U. No. 1-26-I (last change 3/1/26) |
| Distributed solar (SMART) charge | 0.935¢ per kWh | All kWh | Summary of Electric Delivery Service Rates, Rate R-1, M.D.P.U. No. 1-26-I (last change 1/1/26) |
| Electric vehicle program factor | 0.315¢ per kWh | All kWh | Summary of Electric Delivery Service Rates, Rate R-1, M.D.P.U. No. 1-26-I (last change 7/1/26) |
| Electric sector modernization plan factor | 0.006¢ per kWh | All kWh | Summary of Electric Delivery Service Rates, Rate R-1, M.D.P.U. No. 1-26-I (last change 7/1/26) |
| Transmission charge | 5.464¢ per kWh | All kWh | Summary of Electric Delivery Service Rates, Rate R-1, M.D.P.U. No. 1-26-I (last change 3/1/26) |
| Cable facilities surcharge (Nantucket) Only Nantucket Electric customers pay this surcharge. |
0.349¢ per kWh | All kWh | Nantucket Electric Summary of Electric Delivery Service Rates, Rate R-1, M.D.P.U. No. 1-26-J (last change 6/1/22) |
| Basic Service (fixed price) Fixed price option. February 1 to July 31, 2026: 15.372¢. August 1, 2026 to January 31, 2027: 17.185¢ (base rate 16.498¢ plus the Basic Service administrative cost factor 0.687¢). The rate for February to July 2027 is not known yet, so the calculator uses the 2026 rate for those months. Default service only. If you buy electricity from a supplier, the calculator uses the supplier price in place of this charge. |
January: 17.185¢ per kWh February to July: 15.372¢ per kWh August to December: 17.185¢ per kWh |
All kWh | Summary of Basic Service Rates, M.D.P.U. No. 1-26-I, sheet 5 (residential R-1, R-2), and the Basic Service rates table for residential customers |
| Low-income discount (Rate R-2) Rate R-2 has the same delivery rates as R-1. The total bill, plus the supply charges that National Grid bills, gets the discount of the income tier. |
32% (over 200% of FPL, up to 60% of state median income; default): -32% 43% (over 150% to 200% of FPL): -43% 57% (over 125% to 150% of FPL): -57% 64% (over 100% to 125% of FPL): -64% 71% (0% to 100% of FPL): -71% |
All the lines above | Rate R-2, M.D.P.U. No. 1631, and Residential Assistance Adjustment Provision, M.D.P.U. No. 1611 (discount tiers) |
Minimum monthly bill: The customer charge ($10.00).
A bill that crosses a season or rate change: We did not find in the documents that we read how the utility bills a period that crosses a season or rate change. The calculator uses the rates of the billing month (the month of the end date).
These examples use 1,000 kWh. Company on your bill: Massachusetts Electric. Rate R-2 (low-income discount): No (Rate R-1). Each column uses the rates of the billing month in its heading. The examples do not include taxes.
| Line | All year (November) |
|---|---|
| Customer charge | $10.00 |
| Net distribution charge | $109.24 |
| Net transition charge | −$0.29 |
| Net energy efficiency charge | $27.13 |
| Renewables charge | $0.50 |
| Net metering recovery surcharge | $24.51 |
| Distributed solar (SMART) charge | $9.35 |
| Electric vehicle program factor | $3.15 |
| Electric sector modernization plan factor | $0.06 |
| Transmission charge | $54.64 |
| Basic Service (fixed price) | $171.85 |
| Total before tax | $410.14 |
The calculator rounds each line to the cent. Each percentage uses the rounded lines.
We read each value from the official documents below. The approval column shows the docket, order or advice number that is printed on each sheet. Last check: October 16, 2026.
| Document | Used for | Effective | Approval |
|---|---|---|---|
| Summary of Electric Delivery Service Rates, Rate R-1, M.D.P.U. No. 1-26-I (last change 10/1/26) | Customer charge, net distribution charge | October 1, 2026 | Summary of Electric Delivery Service Rates, M.D.P.U. No. 1-26-I (Massachusetts Electric) and No. 1-26-J (Nantucket Electric), issued September 9, 2026; rates on file with the Massachusetts DPU |
| Summary of Electric Delivery Service Rates, Rate R-1, M.D.P.U. No. 1-26-I (last change 3/1/26) | Net transition charge, net metering recovery surcharge, transmission charge | October 1, 2026 | Summary of Electric Delivery Service Rates, M.D.P.U. No. 1-26-I (Massachusetts Electric) and No. 1-26-J (Nantucket Electric), issued September 9, 2026; rates on file with the Massachusetts DPU |
| Summary of Electric Delivery Service Rates, Rate R-1, M.D.P.U. No. 1-26-I (last change 5/1/26) | Net energy efficiency charge | October 1, 2026 | Summary of Electric Delivery Service Rates, M.D.P.U. No. 1-26-I (Massachusetts Electric) and No. 1-26-J (Nantucket Electric), issued September 9, 2026; rates on file with the Massachusetts DPU |
| Summary of Electric Delivery Service Rates, Rate R-1, M.D.P.U. No. 1-26-I (last change 1/1/03) | Renewables charge | October 1, 2026 | Summary of Electric Delivery Service Rates, M.D.P.U. No. 1-26-I (Massachusetts Electric) and No. 1-26-J (Nantucket Electric), issued September 9, 2026; rates on file with the Massachusetts DPU |
| Summary of Electric Delivery Service Rates, Rate R-1, M.D.P.U. No. 1-26-I (last change 1/1/26) | Distributed solar (SMART) charge | October 1, 2026 | Summary of Electric Delivery Service Rates, M.D.P.U. No. 1-26-I (Massachusetts Electric) and No. 1-26-J (Nantucket Electric), issued September 9, 2026; rates on file with the Massachusetts DPU |
| Summary of Electric Delivery Service Rates, Rate R-1, M.D.P.U. No. 1-26-I (last change 7/1/26) | Electric vehicle program factor, electric sector modernization plan factor | October 1, 2026 | Summary of Electric Delivery Service Rates, M.D.P.U. No. 1-26-I (Massachusetts Electric) and No. 1-26-J (Nantucket Electric), issued September 9, 2026; rates on file with the Massachusetts DPU |
| Nantucket Electric Summary of Electric Delivery Service Rates, Rate R-1, M.D.P.U. No. 1-26-J (last change 6/1/22) | Cable facilities surcharge (Nantucket) | October 1, 2026 | Summary of Electric Delivery Service Rates, M.D.P.U. No. 1-26-I (Massachusetts Electric) and No. 1-26-J (Nantucket Electric), issued September 9, 2026; rates on file with the Massachusetts DPU |
| Summary of Basic Service Rates, M.D.P.U. No. 1-26-I, sheet 5 (residential R-1, R-2), and the Basic Service rates table for residential customers | Basic Service (fixed price) | August 1, 2026 to January 31, 2027 | Summary of Basic Service Rates, issued September 9, 2026; on file with the Massachusetts DPU |
| Rate R-2, M.D.P.U. No. 1631, and Residential Assistance Adjustment Provision, M.D.P.U. No. 1611 (discount tiers) | Low-income discount (Rate R-2) | Tiered discounts from June 1, 2025 | Massachusetts DPU orders in D.T.E. 01-106-C, D.T.E. 05-86 and D.P.U. 08-4 (printed on the provision) |
| Charge | Date | Old value | New value |
|---|---|---|---|
| Basic Service fixed price (supply) The price for February 1 to July 31, 2026 was 15.372¢. The new price is for August 1, 2026 to January 31, 2027. | Service on and after August 1, 2026 | 15.372¢ per kWh | 17.185¢ per kWh |
Calculate what a change does to your bill. See all recent rate changes.
Delivery values read from the text of National Grid's Summary of Electric Delivery Service Rates for Massachusetts Electric (M.D.P.U. No. 1-26-I) and Nantucket Electric (M.D.P.U. No. 1-26-J), both effective October 1, 2026, as linked from the National Grid Massachusetts tariff provisions page. The components on sheet 1 add up to the printed retail delivery price (22.829¢ for Massachusetts Electric, 23.178¢ for Nantucket), and the 20 factors on sheet 2 add up to the printed net distribution rate (10.924¢). The Basic Service fixed price comes from the Summary of Basic Service Rates (sheet 5) and agrees with National Grid's table of residential Basic Service rates. National Grid does not publish a typical bill with a line breakdown, so the test bills are hand calculations. National Grid Massachusetts residential Basic Service rates table.
In 2025, the average National Grid (Massachusetts) home that bought its power from National Grid (Massachusetts) used 488 kWh a month and paid $164.45 a month, 33.7¢ per kWh (EIA-861 data). That is less than the Massachusetts average of $181.08. Your bill depends on your kWh: use the calculator on this page with the kWh from your bill.
Basic Service is the supply that National Grid buys for customers who do not choose a competitive supplier. The fixed price changes on February 1 and August 1. With the variable price option, the price changes each month.
Yes. Select the supplier option and type the price from your supplier contract. The delivery charges do not change.
Nantucket Electric customers pay a cable facilities surcharge for the undersea cables to the island. All other rates are the same as Massachusetts Electric.
The most common reason is more kWh: heating and air conditioning use much electricity. Charges that change each month: Basic Service (fixed price). A rate change: National Grid (Massachusetts) changed its rates on August 1, 2026. More days in the billing period also add kWh and daily charges. To see which reason applies to your bill, use the Why is my bill so high tool on this site: type your bill and an earlier bill, and it shows each reason in dollars.
Your bill can include sales tax, a city fee, a discount, a late fee or a different number of days. Type the number of days from your bill. To add tax, type the tax rate from your bill in the tax field. If your tariff has a discount program, select it in the options.
Your bill shows the kWh for the billing period. Look for the meter reading section or the usage section.
utilityratecalc.com is not part of Massachusetts Electric Company and Nantucket Electric Company d/b/a National Grid or the Massachusetts Department of Public Utilities. For the official values, use your bill and the tariff of National Grid (Massachusetts).