เปรียบเทียบวิธี

	การวิเคราะห์เอมเมอร์จี	การประเมินวัฏจักรชีวิต (Life Cycle Assessment - LCA)
สาขาวิชา	ความยั่งยืน	ความยั่งยืน
ตระกูล	Process / pipeline	Process / pipeline
ปีกำเนิด	1996	2009
ผู้ริเริ่ม	Howard T. Odum	ISO 14040 framework; Finnveden et al.
ประเภท	Environmental systems accounting	Environmental impact accounting pipeline
แหล่งต้นตำรับ	Odum, H. T. (1996). Environmental Accounting: Emergy and Environmental Decision Making. John Wiley & Sons. ISBN: 978-0-471-11442-0	Finnveden, G., et al. (2009). Recent developments in life cycle assessment. Journal of Environmental Management, 91(1), 1–21.
ชื่อเรียกอื่น	Embodied Energy Analysis, Environmental Accounting (Odum), Emergy Accounting, Emerji Analizi	Life Cycle Analysis, Cradle-to-Grave Analysis, Ecobalance, Yaşam Döngüsü Değerlendirmesi
ที่เกี่ยวข้อง	3	3
สรุป	Emergy Analysis, developed by systems ecologist Howard T. Odum and formally presented in his 1996 book, is a biophysical accounting method that converts all inputs to a system — energy, materials, labor, and services — into a common unit of solar energy equivalents called solar emjoules (sej). By tracing how much prior environmental work was required to produce each input, it enables researchers, engineers, and policymakers to compare fundamentally different resource types on a single thermodynamic basis.	Life Cycle Assessment is a systematic, ISO-standardized methodology for quantifying the environmental impacts of a product, process, or service across its entire life span — from raw material extraction through production, use, and end-of-life disposal. Codified in ISO 14040 and ISO 14044, and comprehensively reviewed by Finnveden et al. (2009), LCA enables decision-makers to compare alternatives, identify environmental hotspots, and support eco-design, with applications spanning products, buildings, energy systems, and public policy.