States › Massachusetts › Town of Wellesley
municipal utility · EIA utility 20310
Town of Wellesley
Average price is revenue divided by sales for the sector and year; it is not a tariff rate. Reliability figures are as reported by utilities to EIA on Form 861 and may use different calculation methods. Annual figures: Form EIA-861 for 2024, final release. Monthly state figures run to July 2026.
Town of Wellesley serves 9,437 residential customers in Massachusetts as a municipal utility, according to its 2024 Form EIA-861 filing, with a service territory that touches 1 county.
Its average residential price that year was 16.20¢ per kilowatthour, 45% below the Massachusetts average of 29.35¢ and about the same as the US average of 16.48¢. The figure is residential revenue divided by residential sales, so it folds in fixed charges, riders and every rate schedule the utility bills under.
That works out to an average residential bill of $158.36 a month on average use of 977 kWh a month. Across Massachusetts the average bill was $167.20 on 570 kWh, so a bill gap reflects how much power households use as well as what each kilowatthour costs.
For reliability it reported a SAIDI of 8.0 minutes per customer with major event days included, calculated under another method. The median among Massachusetts utilities reporting was 53.8 minutes with major event days; this utility's figure is 85% below that median.
The average price is up 9.1% on 2019, against up 33.9% for Massachusetts as a whole, and little changed on 2023. EIA's early release for 2025, which has not been fully edited, shows 16.04¢.
Compared with Massachusetts, the US and other municipal utilities
| Measure, 2024 | This utility | Municipal utilities, US median | Massachusetts | United States |
|---|---|---|---|---|
| Average residential price per kWh | 16.20¢ | 12.45¢ | 29.35¢ | 16.48¢ |
| Average monthly residential bill | $158.36 | $113.02 | $167.20 | $142.26 |
| Average monthly use, kWh | 977 | 905 | 570 | 863 |
| Residential price change, 1 year | +0.1% | — | -0.9% | +3.0% |
| Residential price change, 5 years | +9.1% | — | +33.9% | +26.7% |
| SAIDI, all events (minutes) | 8.0 | 64.4 | 53.8 median | 184.5 median |
| SAIDI, without major event days | — | 40.3 | 35.5 median | 99.8 median |
State and US prices, bills and use are EIA's own averages over every customer. The ownership column and the reliability columns are medians across utilities with at least 1,000 residential customers, computed on this site from the final 2024 file. Among the 16 filings by municipal utilities in Massachusetts, the median price was 15.89¢. In Massachusetts this utility's price ranks 10 of 20, counting from the highest.
Average price by year
Town of WellesleyMassachusetts averageUS average
Year by year
| Year | ¢ per kWh | Massachusetts ¢ | Monthly bill | kWh a month | Residential customers | All sales |
|---|---|---|---|---|---|---|
| 2025 early release | 16.04¢ | 30.48¢ | $162.43 | 1,013 | 9,338 | 248.2 GWh |
| 2024 | 16.20¢ | 29.35¢ | $158.36 | 977 | 9,437 | 245.3 GWh |
| 2023 | 16.18¢ | 29.61¢ | $151.62 | 937 | 9,372 | 238.9 GWh |
| 2022 | 15.13¢ | 25.97¢ | $146.20 | 966 | 9,323 | 243.8 GWh |
| 2021 | 14.83¢ | 22.89¢ | $149.13 | 1,005 | 8,935 | 241.1 GWh |
| 2020 | 14.86¢ | 21.97¢ | $149.26 | 1,005 | 8,939 | 237.9 GWh |
| 2019 | 14.85¢ | 21.92¢ | $140.53 | 946 | 8,934 | 239.3 GWh |
| 2018 | 14.89¢ | 21.61¢ | $150.76 | 1,012 | 8,927 | 253 GWh |
| 2017 | 14.48¢ | 20.06¢ | $137.53 | 950 | 8,921 | 234.2 GWh |
| 2016 | 14.05¢ | 19.00¢ | $136.91 | 975 | 8,898 | 238.3 GWh |
| 2015 | 14.19¢ | 19.83¢ | $141.54 | 998 | 8,861 | 244.5 GWh |
| 2014 | 13.63¢ | 17.39¢ | $133.50 | 980 | 8,866 | 242.9 GWh |
| 2013 | 13.57¢ | 15.83¢ | $135.98 | 1,002 | 8,844 | 246.8 GWh |
Bundled residential service only in the price, bill and use columns. Bill = residential revenue ÷ customers ÷ 12; use = residential sales ÷ customers ÷ 12. EIA describes its early release as not fully edited; it is shown for this utility alone and enters no average, median or rank on this site.
Month by month
Town of WellesleyMassachusetts average
Sales by sector, 2024
| Sector | Customers | Sales | Share of sales | Revenue | ¢ per kWh, bundled |
|---|---|---|---|---|---|
| Residential | 9,437 | 110.7 GWh | 45% | $17,933,100 | 16.20¢ |
| Commercial | 1,220 | 92.1 GWh | 38% | $13,995,300 | 15.25¢ |
| Industrial | 5 | 42.5 GWh | 17% | $6,148,400 | 14.47¢ |
Customers, sales and revenue count every service type the utility reported (bundled, energy-only and delivery-only). The price column uses bundled service alone, because part-bill revenue would understate it. Sources of energy: 245 GWh in total, of which 0% was its own net generation and 245 GWh was bought wholesale; summer peak demand 55 MW.
Reliability
Minutes of sustained interruption per customer in 2024, as the utility reported them under another method. SAIFI: 0.13 interruptions per customer with major event days; CAIDI 61.2 minutes per interruption. EIA's Massachusetts total across all reporting utilities was 102.0 minutes with major event days and 76.1 without. Major event days are storms and similar events that a utility's chosen method sets apart; methods differ, so treat comparisons as approximate. What SAIDI and SAIFI mean.
| Year | SAIDI, all events | SAIDI, no major events | SAIFI, all events | SAIFI, no major events | Method |
|---|---|---|---|---|---|
| 2025 early release | 40.7 | — | 0.24 | — | Other |
| 2024 | 8.0 | — | 0.13 | — | Other |
| 2023 | 38.5 | — | 0.63 | — | Other |
| 2022 | 31.7 | — | 0.70 | — | Other |
| 2021 | 24.9 | — | 0.48 | — | Other |
| 2020 | 31.0 | — | 0.49 | — | Other |
| 2019 | 29.0 | — | 0.80 | — | Other |
| 2018 | 35.0 | — | 0.83 | — | Other |
| 2017 | 16.1 | — | 0.39 | — | Other |
| 2016 | 39.0 | — | 0.56 | — | Other |
| 2015 | 7.0 | — | 0.10 | — | Other |
| 2014 | 7.0 | — | 0.13 | — | Other |
| 2013 | 21.0 | — | 0.43 | — | Other |
Counties in its service territory
Counties the utility listed on Form EIA-861 for 2024. Listing a county does not mean the utility serves all of it.
Other utilities in Massachusetts
| Utility | Ownership | Residential customers | ¢ per kWh | Monthly bill | SAIDI, all events | SAIDI, no major events |
|---|---|---|---|---|---|---|
| Town of Mansfield | Municipal | 9,399 | 15.16¢ | $109.93 | 15.7 | 10.0 |
| Town of Hudson | Municipal | 11,448 | 13.39¢ | $101.78 | 77.5 | 72.4 |
| Town of Danvers | Municipal | 11,594 | 16.45¢ | $114.03 | 18.0 | 18.0 |
| Town of North Attleborough | Municipal | 12,607 | 15.91¢ | $121.16 | 5.9 | 5.9 |
| Town of Littleton | Municipal | 6,738 | 14.12¢ | $119.96 | — | — |
| City of Norwood | Municipal | 13,601 | 17.67¢ | $97.52 | 64.1 | 24.8 |
| Town of Braintree | Municipal | 14,039 | 15.79¢ | $111.59 | 2.5 | 2.5 |
| Town of Middleborough | Municipal | 14,884 | 15.84¢ | $125.38 | 19.1 | 19.1 |
All Massachusetts utilities · Municipal utilities nationwide
Questions and answers
How much does electricity cost from Town of Wellesley?
Residential customers paid an average of 16.20¢ per kilowatthour in 2024. EIA derives this by dividing residential revenue by residential sales; it is an average across all rate schedules and charges, not a tariff rate.
How does that compare with Massachusetts?
The Massachusetts average residential price in 2024 was 29.35¢ and the US average 16.48¢; Town of Wellesley was 45% below the state figure. Among 20 utility filings with a bundled residential price in Massachusetts, it had the 10th highest.
What is the average Town of Wellesley bill?
$158.36 a month in 2024, on average residential use of 977 kWh a month (annual revenue and sales divided by customers and by twelve). The Massachusetts average was $167.20 on 570 kWh.
How reliable is Town of Wellesley service?
It reported 8.0 minutes of interruption per customer (SAIDI) including major event days, with 0.13 interruptions per customer (SAIFI) in 2024. Utilities calculate these under differing methods, so comparisons are approximate.
Is the Town of Wellesley price rising?
The average residential price was little changed in 2024 compared with 2023 and up 9.1% compared with 2019. EIA's early, not fully edited release for 2025 shows 16.04¢.
Which counties does Town of Wellesley serve?
Its Form EIA-861 service territory lists 1 county: Norfolk County, MA. A county can appear in several utilities' territories.
Provenance
Source: U.S. Energy Information Administration. Annual figures are from Form EIA-861 (sales to ultimate customers, reliability, operational data and service territory files), final release for 2024, respondent "Town of Wellesley - (MA)", utility number 20310; the 2025 row is from EIA's early release. Monthly utility figures are from the Form EIA-861M sample. State and US averages are from the Form EIA-861M sales and revenue workbook, published through July 2026. All are US government works in the public domain. Page built 30 Sep 2026. Errors in processing are corrected at the next build; see corrections. For tariffs and rate schedules, consult the utility or the state utility commission.