| URL | Type | Company | Address | City | State | Zip |
| https://www.nationalgridus.com/masselectric/index.asp | ELECTRIC | NATIONAL GRID (Massachusetts Electric) | Customer Service Center | Northborough | MA | 01532 |
| http://www.nationalgridus.com/ | GAS | NATIONAL GRID (formerly KEYSPAN) (Boston Gas) | 52 Second Ave. | Waltham | MA | 02451 |