Sustainability Analysis Metrics: Theory and Applications

Sustainability analysis metrics provide structured methods to evaluate the environmental, economic, and social impacts of energy systems. Theoretical foundations include life cycle assessment, exergy analysis, carbon footprinting, and multi-criteria decision analysis. These metrics quantify resource consumption, emissions, efficiency, costs, and societal effects across the full lifecycle of technologies. In practical applications, sustainability metrics are used to compare energy options, guide infrastructure planning, support policy formulation, and optimize system design. They enable transparent evaluation of trade-offs between performance, cost, and environmental impact. Sustainability metrics are widely applied in renewable energy projects, industrial processes, buildings, and urban energy systems. By converting complex system behavior into measurable indicators, these tools support evidence-based decision-making and help align energy development with climate goals, resource efficiency, and long-term sustainability.