From the angle of Sustainable Development Goals (SDGs), this research note explores renewable energy in food supply chain and sustainable marine fishery. With an initial theoretical analysis, it is observed that the share of renewable energy, as reflected by SDG Indicator 7.2.1, can contribute to the measurement of and data computation for SDG Indicators 12.3.1 and 14.7.1. This is because renewable energy becomes a significant component of on board cost for harvesting, processing, and preserving fishes by marine vessels/fleets. Also renewable energy can be used to estimate food waste because it functions as an estimation for municipal solid waste if data is not directly available. A number of scientific and practical implications are generated. For example, more interdisciplinary studies on the interactions across SDGs should be encouraged, and more in-depth empirical research are also expected in future. The connections between renewable energy, food supply chain, and sustainable marine fishery also call for more holistic policies for sustainable development, with adequate consideration of disparities in country contexts. Effective actions should be taken to further enhance the statistical capacities of countries and international organizations, which will be a foundation for applying more sophisticated techniques into the analysis of data in this field. The main objectives of this short research note are to provoke more scientific thoughts and provide policy-oriented recommendations. It leaves spaces for more empirical evidence-based future research including another study under the author’s plan.