CMP: Middle Street substation in Maine now in service

Central Maine Power (CMP) late last month said that it has put its new Middle Street substation into service in Lewiston, Maine.

The company said that the facility is part of its $41.5m Lewiston Loop project that started last year.

CMP spokesperson Gail Rice on Oct. 10 told TransmissionHub that the Lewiston Loop project was initially proposed to be part of the Maine Power Reliability Program (MPRP), but was eventually removed from the MPRP and built as a separate, but related, project. The Lewiston Loop project connects to the MPRP at the Larrabee Road substation, which is one of the new substations built as part of the MPRP, Rice said, adding that the MPRP was completed in 2015.

Discussing the new substation, CMP said in its statement that the project also includes a new five-mile, 115-kV overhead line feeding the facility from CMP’s Larrabee Road substation; a new one-mile, 115-kV underground transmission line; and other upgrades designed to enhance reliability in the Lewiston-Auburn area, the company said.

Construction of the underground line between the new Middle Street substation and the existing Lewiston Lower substation off Lisbon Street continues, CMP said.

Rice said that that line is expected to be finished by sometime in 2018.

CMP said that upgrades at the Lewiston Lower substation will begin later this year and continue into 2018. Decommissioning of the existing indoor Lewiston substation is also expected to happen later this year, CMP said, adding that once complete, the building that once housed the indoor substation will be turned over to the City of Lewiston for future use.

CMP is a subsidiary of AVANGRID (NYSE:AGR).

About Corina Rivera-Linares 3238 Articles
Corina Rivera-Linares, chief editor for TransmissionHub, has covered the U.S. power industry for the past 15 years. Before joining TransmissionHub, Corina covered renewable energy and environmental issues, as well as transmission, generation, regulation, legislation and ISO/RTO matters at SNL Financial. She has also covered such topics as health, politics, and education for weekly newspapers and national magazines. She can be reached at