Located within the village limits is a hydroelectric dam that is positioned just upstream from the bridge which carries Route 812 across the Oswegatchie River. The dam is owned by Erie Boulevard Hydropower LP, and has a generation capacity of approximately 1 megawatt. Beginning in August 2017, a project to build a fish passage around the Heuvelton hydroelectric dam on the Oswegatchie River is now nearing completion and represents the latest collaboration between private business and government aimed at improving local fish habitats across the region. The new serpentine passage is designed to allow American eel, sturgeon, and other fish to traverse the dam without being injured. It will also allow the fish access to new habitat along sections of the waterway where access was previously limited.