AUGUSTA, MAINE, May 11, 2020 — Today, the Department of Environmental Protection (DEP) issued a permit to Central Maine Power Company (CMP) for construction of the New England Clean Energy Connect (NECEC) project. The project includes an electric transmission line from the Quebec border in Beattie Township to a new converter station in Lewiston, as well as several upgrades to CMP’s existing electrical transmission network between Lewiston and Pownal, Windsor and Wiscasset, and in Cumberland.  Approximately two-thirds of the 145-mile transmission line is proposed to be built along CMPs existing transmission corridor.  The remainder of the line, known as Segment 1, would run through commercial timberland in western Somerset and Franklin counties.

DEP’s issuance of the permit follows two and a half years of technical review, including extended evidentiary hearings and public hearings. In addition, on March 13, 2020, DEP released a draft of the permit for public comment. This comment period was later extended to account for the disruption caused by the COVID-19 crisis. After careful consideration of the comments received, DEP issued a final permit for the project.

DEP’s permit contains a set of conditions that minimize the project’s environmental impact and require extensive land conservation and habitat protection plans. The conditions in the final permit retain all the protections from the draft permit. For example, the permit:

  • Limits the corridor width in Segment 1, originally proposed to be 150 feet, to 54 feet at its widest point, limiting visual and habitat impacts;
  • Requires preservation of natural forest canopy or trees at least 35 feet tall across the corridor in vulnerable habitat areas covering approximately 14 miles along Segment 1, protecting wildlife, wildlife movement, and plant species;
  • Requires the conservation of more than 700 acres of deer wintering habitat and the preservation of soft wood deer travel corridors across the transmission corridor in an important deer wintering area along the Kennebec River;
  • Prohibits herbicide use throughout Segment 1 of the corridor;
  • Requires permanent conservation of 40,000 acres in western Maine; and
  • Requires CMP to set aside $1,875,000 for culvert replacement projects, which will enhance fish habitat by facilitating passage, reducing erosion, and improving water quality.

The final permit also imposes additional terms and conditions that ensure both the effectiveness of the permit’s protective provisions, and that the intended benefits are fully realized. These changes:

  • Require that CMP fully fund the removal and decommissioning of the Segment 1 transmission line after the life of the project;
  • Strengthen the permit’s land conservation provisions. The final permit requires CMP to develop a Conservation Plan governing land use on 40,000 acres in the vicinity of Segment 1 and submit the Plan to DEP review and approval.  The Conservation Plan must be designed to compensate for the fragmenting effects of the corridor, prioritize the conservation of large blocks of land, and promote conservation of mature forest habitat;
  • Require that CMP actively manage vegetation along the tapered sections of Segment 1 to maximize benefits to wildlife.

Collectively, the requirements of the permit require an unprecedented level of environmental protection and compensatory land conservation for the construction of a transmission line in the State of Maine.

DEP appreciates the participation of the parties in the evidentiary hearings, and the thoughtful comments from Maine citizens throughout the review process. To review the permit, public comment and response documents, permit application materials, correspondence, transcript of the public hearing and other DEP documents associated with the New England Clean Energy Connect (NECEC) permit review, visit

For additional information, contact:

David R. Madore, Communications Director

(207) 287-5842