Renewable energy, machine learning (ML), artificial intelligence (AI), and sustainable energy ethics are explored in this study. It explores salinity gradient, blue, osmotic, and hydrogen storage renewable energy sources, green mobility, and power production to minimise fossil fuel consumption and carbon emissions. AI and ML improve energy, blue energy, industrial efficiency, and infrastructure. The chapter emphasises openness, accountability, and justice in AI and ML ethics. Sustainable energy and SDG alignment need strong policy and governance frameworks. AI is being studied in climate forecasting, ocean precision modelling, and environmental monitoring. Inclusivity, justice, and equality are ethical. This chapter continues with an overview of AI, ML, green energy, and ethics, covering trends, problems, and legal frameworks for sustainable energy.