In brief
Maryland's Constellation Energy has committed over $340 million to enhance water quality at the Conowingo Dam, a major renewable energy source in the state, following a licensing agreement. The investment aims to address sediment pollution affecting the Chesapeake Bay and includes various ecological enhancement projects. This deal is part of a long-term effort to support environmental standards and secure the future of clean energy production.
ANNAPOLIS, Md. — Constellation Energy has committed more than $340 million to improve water quality at Maryland's Conowingo Dam, which feeds into the Susquehanna River and ultimately the Chesapeake Bay, the largest estuary in the United States.
This significant investment clears the path for the re-licensing and continued operation of the dam's hydroelectric facility, which represents a key source of renewable energy for Maryland.
Maryland Governor Wes Moore expressed optimism regarding the deal, stating, This agreement will lead to real improvements in water quality in the biggest tributary of the Chesapeake Bay, while securing the future of one of our state’s largest clean energy producers.
The agreement effectively resolves prolonged disputes regarding the responsibility for managing sediment pollution caused by the dam, which has been a contentious issue among stakeholders.
The Maryland Department of the Environment issued an initial certification for the Conowingo Dam back in 2018. However, subsequent legal challenges in 2019 led to a waiver of certification which included a settlement mandating Constellation Energy to invest a minimum of $230 million in related improvements.
An appeals court vacated the dam's license in 2022, siding with environmental groups advocating for necessary water quality mitigations. The newly announced deal was negotiated in collaboration with Waterkeepers Chesapeake and the Lower Susquehanna Riverkeeper Association to meet applicable water standards.
The project will allocate approximately $88 million towards pollution abatement efforts and resilience initiatives, including shoreline rehabilitation, forest buffers, and fish habitat projects. An additional $78 million will focus on removing trash and debris, complementing existing efforts that clear an average of 600 tons annually.
Moreover, funding will also enhance fish and eel passages, establish a new freshwater mussel hatchery, manage invasive species, and explore the feasibility of dredging trapped sediment from the dam.
The governor's office confirmed that a Revised Water Quality Certification will be submitted to the federal government as part of the dam's license renewal process.
“Today’s announcement marks 16 years of tremendous effort and perseverance by our organization to assure Conowingo Dam is relicensed with proper conditions that protect the health of the Lower Susquehanna River and Chesapeake Bay,” stated Ted Evgeniadis, Executive Director of the Lower Susquehanna Riverkeeper Association.
