Electricity rates in Chelmsford, MA
Chelmsford (33,925 people, Middlesex County) is served by 2 electric utilities. Homes on Massachusetts Electric Co. pay about 34.18¢/kWh, 12% more than the Massachusetts average.
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Electric companies serving Chelmsford
| Utility | Type | Rate | Avg bill | Homes (statewide) | Outage min |
|---|---|---|---|---|---|
| Massachusetts Electric Co. | Investor-owned utility | 34.18¢ | $166 | 438K | 133 |
| NSTAR Electric Company | Investor-owned utility | 19.62¢ | $93 | 307K | 113 |
Power outages in Middlesex County right now
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Outage history in Middlesex County
| 2024 | 2025 | |
|---|---|---|
| Outage minutes per customer | 179 | 238 |
| Days with outages | 48 | 64 |
| Most customers out at once | 16,414 (3.8%) | 19,321 (4.4%) |
| Worst day | 2024-01-07 | 2025-12-19 |
Outage minutes by month, 2025
More outage time than 2024 (179 min). Data: ORNL EAGLE-I county outage snapshots every 15 minutes, covering all utilities in the county.
Nearby cities
ZIP codes: 01824
Frequently asked questions
What is the electricity rate in Chelmsford?
Most homes in Chelmsford get power from Massachusetts Electric Co., where residential customers pay an average of 34.18¢/kWh including all charges. The Massachusetts average is 30.43¢ and the U.S. average 17.99¢. Other utilities serving parts of Chelmsford: NSTAR Electric Company (19.62¢).
What is the average electric bill in Chelmsford?
About $166 a month, based on 487 kWh a month (the average for Massachusetts Electric Co. customers) at 34.18¢/kWh. Homes with electric heat, pools or EVs pay more.
Who is the electric company in Chelmsford, MA?
2 utilities serve Chelmsford's ZIP codes: Massachusetts Electric Co., NSTAR Electric Company. Which one serves you depends on your street address.
How often does the power go out in Chelmsford?
In 2025, customers in Middlesex County averaged 3 hr 58 min without power. Outages hit 64 days of the year, and the worst day was 2025-12-19, when 19,321 customers (4.4%) were out. Source: ORNL EAGLE-I.