The Office of Energy Efficiency and Renewable Energy (EERE) is issuing, on behalf of the Water Power Technologies Office (WPTO), this funding opportunity announcement (FOA) titled Oceans of Opportunity: U.S. Wave Energy Open Water Testing, to significantly accelerate the design, fabrication, and testing of multiple wave energy converters. WPTO plans to open a stage-gated, five-year, up to $112.5 million funding opportunity to advance U.S. wave energy technology commercial adoption. This FOA will support projects across three topic areas focused on advancing wave energy research, development, and demonstration (RD) to move the wave energy industry toward commercialization for distributed, community, and utility applications. Topic Area 1: Open Water Testing and System Validation for Distributed Applications Topic Area 2: Open Water Testing and System Validation for Community Applications Topic Area 3: Open Water Testing and System Validation for Utility Applications This FOA is issued via the EERE Program Information Center (EPIC) website. To view the full announcement, visit EPIC at https://epicweb.ee.doe.gov/EPICWeb/#/home.