Life Cycle Assessment of Energy and Bioenergy Systems

Life Cycle Assessment (LCA) has emerged as a cornerstone methodology for quantifying the environmental performance of energy and bioenergy systems from cradle to grave. By accounting for resource extraction, production, conversion, distribution and end‐of‐life stages, LCA delivers a holistic evaluation of greenhouse gas emissions, energy balances and broader impact categories such as water use, land occupation and eutrophication. In the context of bioenergy, this approach reveals trade-offs between carbon removal potential and other environmental burdens arising from feedstock cultivation, processing and transport. For conventional and advanced energy systems alike, LCA informs decision-making on technology deployment, policy design and sustainability standards. Recent advances have focused on harmonising methodological choices, integrating techno-economic parameters and coupling LCA with energy system models to assess system-level implications. As global energy transitions accelerate towards net-zero targets, LCA continues to underpin transparent performance comparisons across fossil, renewable and bio-based pathways and guide the design of sustainable supply chains.

Research from Nature Portfolio

Recent studies have assessed the environmental trade-offs of emerging bio-based materials, showing on average a 45 per cent reduction in life-cycle greenhouse gas emissions compared with fossil benchmarks, albeit with wide variation across product categories. While certain biorefinery products achieve up to a 73 per cent reduction, bioadhesives exhibit more modest gains, and increased eutrophication impacts underscore the need for individual product evaluations. Another analysis has linked integrated assessment scenarios with forward-looking LCA to compare decarbonisation pathways in the power sector. Results indicate that wind and solar-focused strategies deliver significant human health co-benefits by reducing particulate and ozone precursors, whereas high reliance on bioenergy elevates land-use pressures. Mineral resource depletion and ecosystem damage profiles diverge markedly with technology choice, emphasising that environmental co-benefits and adverse side-effects must both inform energy policy.

Life Cycle Assessment of Energy and Bioenergy Systems publication trend

The graph below shows the total number of articles in life cycle assessment of energy and bioenergy systems across all publications each year (not limited to Nature Index journals).

Technical terms

Life Cycle Assessment (LCA): A systematic method for evaluating environmental impacts associated with all stages of a product or system’s life, from raw material extraction to disposal.

Techno-economic Analysis: An approach that combines technical performance metrics with economic evaluation to assess the feasibility and cost-efficiency of technologies.

Grid Emission Factor: The average greenhouse gas emissions per unit of electricity produced by an electrical grid, accounting for fuel mix and generation technologies.

Carbon Capture and Storage (CCS): A process that captures carbon dioxide emissions from energy or industrial processes and stores them underground to prevent atmospheric release.

Bio-based Product: A material or fuel derived from biological feedstocks such as crops, residues or algae, intended to replace fossil-derived counterparts.

Eutrophication: The enrichment of aquatic ecosystems with nutrients (often nitrogen or phosphorus), leading to excessive plant growth and oxygen depletion.

References

1. The potential of emerging bio-based products to reduce environmental impacts. Nature Communications (2023).
2. Environmental co-benefits and adverse side-effects of alternative power sector decarbonization strategies. Nature Communications (2019).
3. Life cycle assessment and techno-economic analysis of sustainable bioenergy production: a review. Environmental Chemistry Letters (2024).
4. Towards standardized grid emission factors: methodological insights and best practices. Energy & Environmental Science (2024).
5. The role of carbon capture and storage to achieve net-zero energy systems: Trade-offs between economics and the environment. Renewable and Sustainable Energy Reviews (2023).