What is life cycle assessment (LCA) and its relevance to energy resources?

• A. Evaluates environmental impacts across a product's life cycle; important for comparing true environmental costs of fuels and technologies
• B. Only for manufacturing costs
• C. Focuses solely on emissions during use
• D. Is not used in energy resources

Answer: (A)

Life cycle assessment looks at environmental impacts across a product’s life cycle, from raw material extraction through manufacturing, use, and end-of-life disposal. This broad view is essential for energy resources because the true environmental cost of a fuel or technology isn’t limited to its use phase. A fuel might burn cleanly, but if its production, processing, transportation, or waste handling consumes a lot of energy or causes pollution, those impacts add to its overall burden. LCA captures multiple impact categories—greenhouse gas emissions, energy invested, air and water pollution, land use, and resource depletion—so you can compare options like coal, natural gas, renewables, biofuels, or nuclear on a common footing. It helps reveal trade-offs and pinpoint hotspots where improvements can cut total environmental impact, informing policy, procurement, and design decisions. Keep in mind that results depend on choices about system boundaries and data quality, which can influence the assessment.