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CMP completes major system upgrades in Piscataquis County


AUGUSTA, Maine, May 8, 2008 — Central Maine Power Co. has completed the latest of a series of upgrades to its electricity-delivery system serving communities in Piscataquis County. From dawn until dusk on Saturday, May 3, an army of substation and line workers, some from as far away as York County, installed new equipment at the utility’s Guilford Substation.

“This substation work — which was completed without interrupting service to customers — will reinforce our system and improve reliability in Piscataquis County,” said CMP spokesman John Carroll. “It’s hard to measure the results of a project like this, because it’s intended to prevent interruptions, so you’re counting on things not happening. However, residential and business customers from Dover-Foxcroft to Greenville and up both sides of Moosehead Lake will be less likely to experience interruptions from events such as lighting strikes or problems with equipment inside the substation.”

Work on the project began weeks earlier, when crews put mobile substations and other equipment into place to keep the power flowing while the Guilford Substation was taken out of service. On Saturday, more than 30 utility workers converged on the substation. They replaced older insulators and lightning arrestors, and installed new lightning arrestors on three transmission sections at the substation to protect equipment from damage during thunderstorms. Crews also replaced an older transformer with a higher-efficiency unit, which should help to reduce carbon emissions from electricity generation plants and could contribute to lower electricity prices for consumers. Finally, crews performed more routine maintenance to switches and other equipment at the facility.

This weekend’s work comes about a year after CMP completed a new transmission line between the Guilford and Dover-Foxcroft Substations. The line has greater capacity and new fault-detection equipment that allows crews to quickly locate and fix problems should they occur.

“These upgrades are part of an estimated $160 million in system investments CMP plans to make in 2008,” adds Carroll. “As the electricity needs of Maine residents and businesses grow, we’re committed to growing our system to meet those needs.”


About CMP: Central Maine Power, a subsidiary of Energy East Corporation, operates more than 25,000 miles of power lines and other facilities that deliver electricity to 80 percent of Maine’s population. Web site:

About Energy East: Energy East Corporation is a respected, super-regional energy services and delivery company serving about 3 million customers throughout upstate New York and New England. By providing outstanding customer service and meeting customers’ energy requirements in an environmentally responsible manner, Energy East will continue to be a valuable asset to the communities we serve.