Wave energy conversion and ocean thermal energy conversion are two potentially significant sources of renewable energy that are available to help ADB's developing member countries reduce their dependence on fossil-fuel based energy generation and bolster energy security. This report summarizes wave energy conversion and ocean thermal energy conversion information that is available in the public domain for the developing member countries and assesses the viability of using these resources to produce electricity. In addition, the report identifies supplementary resource information that is required for system design and evaluates the development status of the required equipment. It also discusses the degrees of readiness and potential of marine-based renewable energy generation for use in ADB's developing member countries: wave energy conversion and ocean thermal energy conversion.