all usage, all hours · plus $10.00 per month · covers delivery and default supply — delivery plus the utility's default supply; a customer who buys supply elsewhere pays the delivery part only
effective2026-10-01
transcribed2026-10-02
today2026-10-08
Monthly bill on default supply
Usage
$ per month
500 kWh
$210.07
1,000 kWh
$410.14
2,000 kWh
$810.28
Computed from the rates on this page at 30.4 days a month. The same arithmetic is checked against the utility's own published typical bill on every build. Delivery plus this utility's default supply. A customer who switched supplier pays the delivery part and their supplier's rate instead.
Before taxes, franchise fees and any local surcharge.
Provenance
no published total to check against
sourceMassachusetts Electric Company, M.D.P.U. No. 1-26-I, Summary of Electric Delivery Service Rates and Summary of Basic Service Rates
verifiedTranscribed from the utility's filed sheetMassachusetts Electric Company, M.D.P.U. No. 1-26-I, Summary of Electric Delivery Service Rates and Summary of Basic Service Rates
verifiedEffective date on the sheet: 2026-10-01
approximateNo published total to reconcile the whole rate againstNO WHOLE-BILL TARGET IS PUBLISHED. The Massachusetts DPU publishes no bill comparison of the kind Michigan does - its rates page links out to each company's own tariffs and nothing more - and National Grid publishes comp
verifiedSource document checked daily for changes
approximateThis is not a whole billdelivery and default supply — delivery plus the utility's default supply; a customer who buys supply elsewhere pays the delivery part only
excludedTaxes, franchise fees and local surchargesJurisdiction-specific, so they are deliberately not encoded. A bill will be higher than this figure by that amount.
Energy rates
Period
Applies to
$/kWh
all hours (not time-of-use)
all usage
$0.40014
Other plans at this utility
Encoded from the same tariff book, on the same day. Which one
you are on is on your bill; which one you are eligible for is set by the
utility, not by this page.
Transcription notes recorded when this tariff was encoded, including anything deliberately left out.
Massachusetts Electric Company, trading as National Grid. National Grid's other US electric utility is Niagara Mohawk in upstate New York, which files a separate tariff and is not encoded. The brand covers both.
MASSACHUSETTS IS RESTRUCTURED. The bill is delivery plus supply, and the supply half is substitutable: a customer may buy from a competitive supplier or a municipal aggregation instead of National Grid's Basic Service. These figures are the default-supply bill, the same shape as ComEd in Illinois.
Basic Service has a FIXED price option and a VARIABLE price option. The fixed option is encoded because it is the default; the variable option is reset monthly and ranges from 15.6c in September to 20.1c in January 2027 on the same filing.
The fixed supply term runs 1 August 2026 to 31 January 2027. It resets twice a year, on 1 February and 1 August, so this figure has a known expiry rather than an open-ended one.
THE UTILITY'S OWN RATES PAGE LINKS A SUPERSEDED FILING. The Service Rates page's newest Massachusetts Electric document is M.D.P.U. No. 1-26-G, effective 1 July 2026. It was cancelled by 1-26-H on 1 August, which is published only at an undated URL the page does not list. Encoding from the page's newest link gives supply 15.372c instead of 17.185c and delivery 22.933c instead of 22.327c - both wrong, both plausible.
The monitor therefore watches the evergreen tariff URLs, not the dated monthly archive, which lags by about a month.
EXCLUDED: the Farm Discount (10%) and the Low Income Discount, which is filed as a RANGE of 32% to 71% rather than a figure and cannot be resolved without knowing the customer's benefit tier.
EXCLUDED: Massachusetts state and local taxes.
THE MOST EXPENSIVE RATE IN THE CATALOGUE at 40.01c/kWh all-in - more than three times Nevada Power's 11.94c and well above California. Delivery alone (22.829c) costs more than most utilities' entire bill.
Delivery is itself split: 10.924c distribution and 5.464c transmission, plus twelve smaller components including energy efficiency, net metering recovery and a solar (SMART) charge. The utility's printed Net Retail Delivery Price is re-summed from those components at build time.
Flat: not tiered, not seasonal, not time-of-use. R-2 carries the same rates as R-1 and differs only by adding the low income discount.
Think a figure here is wrong?
Email support@rategrid.dev
with this plan's name and what the filed sheet says. Every rate on this page was
transcribed from the document linked above, so a report that quotes the sheet can
be checked against it and corrected.
Change history
The source document is fetched daily and every version is kept.
Utilities do not publish superseded rates, so this record does not exist
elsewhere once a rate changes.