Northern Pass

Northern Pass
Name	Northern Pass
Country	United States
State	New Hampshire
Status	Proposed/Partially completed
Owner	Eversource Energy (principal developer)
Length mi	~192
Capacity MW	1,090
Voltage kV	345
Type	High-voltage direct current / Alternating current transmission (planned)

Northern Pass Northern Pass was a proposed high-voltage electric power transmission project intended to deliver hydroelectric power from Québec to New England markets via New Hampshire. Planned and developed primarily by Eversource Energy in partnership with Hydro-Québec and other firms, the project intersected federal, state, and provincial jurisdictions, major environmental organizations, regulatory agencies, and utility stakeholders. Controversy over siting, environmental impacts, cultural resources, and economic benefits shaped public debates and legal challenges across the 2010s and early 2020s.

Overview

The proposal sought to transmit up to 1,090 megawatts from La Grande Complex and other northern Québec hydroelectric resources through a corridor terminating in Merrimack Station and Seabrook Station interconnections. Proponents emphasized links to ISO New England, potential emissions reductions relative to fossil-fueled generators like Brayton Point Power Station and Vermont Yankee, and alignment with regional climate goals such as those in the Regional Greenhouse Gas Initiative. Opponents highlighted impacts to landscapes within the White Mountain National Forest, river corridors including the Connecticut River, and cultural sites associated with the Abenaki and other Indigenous communities.

Route and Infrastructure

The proposed route traversed multiple counties in New Hampshire from the northern border with Canada near Pittsburg, New Hampshire, south through the Great North Woods region, skirting the Presidential Range and crossing near towns such as Lancaster, New Hampshire and Littleton, New Hampshire, before following existing rights-of-way toward Concord, New Hampshire and interconnection points in southern New England. Engineering plans considered a mix of aboveground transmission line towers modeled on designs used in projects like Champlain Hudson Power Express and buried cables reminiscent of the Hudson Project. Infrastructure components involved substations, converter stations similar to those at Moses-Saunders Power Dam, and potential maritime crossings near Portsmouth, New Hampshire.

Environmental and Regulatory Issues

Regulatory review engaged agencies such as the New Hampshire Public Utilities Commission, the Federal Energy Regulatory Commission, the U.S. Forest Service, and the New Hampshire Department of Environmental Services. Environmental assessments examined impacts to habitats of species listed under statutes connected to Endangered Species Act-related processes as well as corridors affecting the Appalachian Trail and watersheds feeding the Connecticut River. Litigation and permitting invoked statutes and precedents tied to projects like KXL Pipeline and Atlantic Coast Pipeline, with concerns about scenic impacts to designated landscapes such as Franconia Notch State Park and protected areas administered by National Park Service partners.

Public Response and Opposition

Public response grouped municipal governments, historic preservation organizations, business coalitions, and conservation NGOs. Opposition coalitions included local chapters akin to groups that opposed Keystone XL and Northern Gateway pipelines, while supporters included utilities, some municipal councils, and trade associations representing transmission interests similar to the American Transmission Company network advocates. Cultural heritage stakeholders cited Indigenous rights organizations connected to the Abenaki Nation and tribal interlocutors who have engaged with federal processes under frameworks used in cases involving Mashpee Wampanoag Tribe consultations. Town meetings in Jackson, New Hampshire, North Conway, New Hampshire, and Haverhill, New Hampshire recorded deliberations comparable to public hearings in projects such as Maine Power Reliability Program.

Economic and Energy Impact

Analyses referenced by proponents invoked modeling frameworks used by ISO New England to estimate dispatch, congestion relief, wholesale prices, and emissions displacement relative to generators such as Mystic Generating Station. Economic benefit claims cited construction employment, tax base impacts seen in infrastructure projects like New England Clean Energy Connect, and anticipated energy imports consistent with trade flows between Québec utilities like Hydro-Québec and New England purchasers. Critics compared projected benefits to cost recoveries and rate effects evaluated by regulators in cases involving Central Maine Power and argued about long-term market effects, capacity market outcomes, and integration with renewable portfolios overseen by agencies similar to the Massachusetts Department of Energy Resources.

Project History and Timeline

Initial concept phases involved feasibility studies and memoranda of understanding between Eversource Energy and Hydro-Québec counterparts, followed by applications submitted to bodies including the New Hampshire Site Evaluation Committee and filings with the Federal Energy Regulatory Commission. Key milestones paralleled permitting battles seen in infrastructure histories like Northeast Energy Direct and TransCanada proposals: early environmental reviews, contested hearings, judicial appeals in New Hampshire Supreme Court and federal district courts, and negotiated mitigation proposals. Major publicized decisions, community votes, and procedural rulings from agencies such as the U.S. Forest Service and the New Hampshire Public Utilities Commission shaped the trajectory through the late 2010s into the 2020s.

Legacy and Current Status

Although the original large-scale proposal did not achieve full permitted construction as envisioned, elements of transmission planning, stakeholder engagement, and cross-border energy trade influenced subsequent projects in the region, including proposals advanced by entities like Central Maine Power and renewed talks between Hydro-Québec and New England utilities. The debates produced precedent for aesthetic, cultural, and environmental considerations in siting major infrastructure across landscapes similar to White Mountain National Forest and legal frameworks referenced in later cases before the Federal Energy Regulatory Commission and state public utility commissions. The Northern Pass controversy remains a reference in discussions involving renewable energy sourcing, interprovincial energy agreements, and regional decarbonization strategies advocated by policy actors in Northeast United States energy planning.

Category:Energy infrastructure in New Hampshire