- Central Maine Power Company office in Augusta (04336)
- Central Maine Power Company office in Rockland (04841)
- Central Maine Power Company office in Brunswick (04011)
- Central Maine Power Company office in Skowhegan (04976)
- Emera - Bangor Hydro office in Lewiston (04240)
- Emera - Maine Public office in Lewiston (04243)
- Eastern Maine Electric Coop office in Calais (04619)
- Eastern Maine Electric Coop office in Crystal (04747)
- Fox Islands Electric Cooperative Inc. office in Vinalhaven (04863)
- Matinicus Plantation Electric Company office in Matinicus (04851)
- Kennebunk Light & Power District office in Kennebunk (04043)
- Madison Electric Works office in Madison (04950)
- NB Power office in Fredericton (NB E3B 4X1)
- Houlton Water Company office in Houlton - Bangor St (04730)
- Houlton Water Company office in Houlton - Access Rd (04730)
- Van Buren Light & Power District office in Van Buren (04785)