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THE UTILITY'S OWN RATES PAGE LINKS A SUPERSEDED FILING.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 39.51c/kWh all-in - more than three times Nevada Power's 11.94c and well above California. Delivery alone (22.327c) costs more than most utilities' entire bill.
Delivery is itself split: 10.422c distribution and 5.464c transmission, plus twelve smaller components including energy efficiency, net metering recovery and a solar (SMART) charge.
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.
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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Utilities do not publish superseded rates, so this record does not exist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.
No changes detected since monitoring began. The source sheet is checked daily.