MPUC approves CMP transmission line for record hill wind project in Roxbury

By Ramona du Houx

August 31st, 2010

Today the Maine Public Utilities Commission voted to grant conditional approval for Central Maine Power (CMP) to upgrade a section of its transmission system near Roxbury, ME. The upgrade is required in order to connect the proposed Record Hill Wind LLC (Record Hill) generation project to CMP’s electric transmission system. The proposed $13.5 million project will be paid for primarily by the wind generator (Record Hill). The Commission placed several conditions on the approval to secure financial assurances from Record Hill including a requirement for three-month prepayment to CMP of all construction costs and quarterly reports to the Commission monitoring project progress.

“In this case, the Commission must determine whether there is a need for CMP to upgrade its transmission system and, if so, ensure that the generation project driving the need is required to cover the associated cost,” stated Commission Chair Jack Cashman. “We agree with the engineering analysis of the regional system operator (ISO-NE) which concluded that the line upgrade is necessary to accommodate the projected new generation from the proposed Record Hill project.”

Specifically, the approval allows CMP to replace an existing 34.5 kilovolt (kV) line that runs from Rumford to Roxbury with a larger 115 kV transmission line. The approval also allows CMP to modify the existing 115 kV substation in Rumford in order to terminate the new line, and to build a new substation in Roxbury.