Overview

• Maryland, Constellation, Waterkeepers Chesapeake and the Lower Susquehanna Riverkeeper agreed to a $340 million settlement paired with a revised water-quality certification that allows a 50-year federal relicensing bid.
• The funding plan includes $87.6 million for nutrient and sediment reductions, more than $60 million for fish passage and habitat work, and $77.8 million for trash and debris cleanup.
• Constellation will provide $18.7 million to assess possible dredging, with any excavation dependent on a U.S. Army Corps study expected in late 2026 or 2027 and subsequent state determinations on 25 years of annual payments.
• The deal resolves years of litigation after a 2022 D.C. Circuit ruling voided FERC’s prior license over Maryland’s improper waiver of certification authority, culminating in more than 30 mediation sessions.
• The Conowingo facility has 11 turbines with up to 572 megawatts of capacity, serving the equivalent of about 165,000 homes, and Constellation’s CEO acknowledged the agreement carries significant costs for the company.