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CMP News

Central Maine Power Company, 83 Edison Drive, Augusta, ME 04336 (207) 622-NEWS 

Corporate Communications - 

Release: Immediate  

Media Contact: Gail Rice (207) 622 NEWS


Media Advisory:
Two Large Autotransformers Due to Arrive in Maine This Week


Offloading in Portland set for 7 a.m. Thursday, May 9; Transport to CMP substations via road and rail set to begin Saturday, May 11

Who and what:
Central Maine Power Company (CMP) is getting ready to take delivery of two 286-ton electrical transformers (15’H x 13’ W x 38’ L) for the Company’s new Maguire Road Substation in Kennebunk and Coopers Mills Road Substation in Windsor — both part of the Maine Power Reliability Program (MPRP).


Where and when:
The autotransformers are due to arrive in Maine by ship this week. The first is expected to arrive Wednesday, May 8, at the Merrill Marine Terminal in Portland Harbor, the other at the Mack Point Marine Cargo Terminal in Searsport on Friday, May 10. Once offloaded from the ship, the units will be prepared for transport via rail and truck (16-axle tractor-trailer rig with a State Police escort) to their respective destinations. The total gross weight of the truck and transformer assembly is 426 tons (more than 852,000 pounds).


Maguire Road autotransformer delivery schedule:
May 8, 5 p.m.: Expected vessel arrival at Merrill Marine Terminal
May 9, 7 a.m.: Discharge of autotransformer from ship
May 11: Rail car departure from Portland
May 18 - 19: Arrival at rail siding in Wells, prepare for transfer to trailer.
May 21 - 22: Transfer from rail car to hydraulic trailer. Proceed west on Routes 9/109, “jack and slide” under I-95, north on Route 9A, and west on Maguire Road to substation.


Coopers Mills Road autotransformer delivery schedule:
May 10-13: Expected vessel arrival and berthing at Mack Point Marine Cargo Terminal, Searsport
May 14, 7 a.m.: Discharge autotransformer to hydraulic heavy haul truck and MDOT inspection
May 15-16: Depart Searsport. The truck will travel south on Route 1 to Belfast, north on Route 141 to Swanville, west on Route 131 to Waldo, west on Route 137 though Knox and Unity to Freedom, south on Route 202 through Albion and China to South China, south on Route 32 to Windsor, then east on Maxcy’s Mills Road to the Coopers Mills Road Substation in Windsor.


About the Maine Power Reliability Program:
Central Maine Power Company’s MPRP is a $1.4 billion investment in Maine’s bulk power transmission system. The five-year project includes the construction of six new 345,000 volt substations, upgrades to more than 40 existing substations, and the installation or rebuilding of nearly 440 miles of transmission line in 75 communities from Eliot to Orrington.

The autotransformers for the Maguire Road and Coopers Mills Road Substations are among the largest units in the Central Maine Power system. Transformers are used to raise or lower voltage on electrical systems. They will step down transmission line voltage from 345,000 volts to 115,000 volts to supply the electrical grid for communities across large areas of central and southern Maine.
Note on photo ops and schedule:
The above schedules are subject to change without notice, so media should call Gail Rice at 629-7826 to verify the project’s status.


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About Central Maine Power Company (CMP): Central Maine Power Company, a subsidiary of Iberdrola USA, is Maine’s largest electricity transmission and distribution utility. The company delivers about 9 billion kilowatt hours of electricity annually to more than 600,000 homes and businesses, representing about 80% of Maine’s annual consumer sales of electricity. The company has been ranked #1 in customer satisfaction seven times by J.D. Power and Associates. For more information, visit .


About Iberdrola USA: Iberdrola USA, a subsidiary of global energy leader Iberdrola, S.A., is an energy services and delivery company serving more than 2.4 million customers in upstate New York and New England. For more information about Iberdrola USA, visit