Life cycle analysis

The life cycle assessment (LCA) is a methodical analysis of the environmental impact of products, processes and services over their entire life cycle. It evaluates the ecological impact from raw material extraction to disposal.

Definition
Life cycle assessment is a method for systematically evaluating the environmental impact of products, processes and services. All phases of the life cycle are considered: from production and use to disposal, including all upstream and downstream processes.

Background / Origin
Life cycle assessment developed from the need to comprehensively assess the environmental impact of products. It refers to the entire life cycle of a product and requires a detailed analysis of the associated environmental impacts. The methodology is increasingly characterized by international standards such as ISO 14040 and 14044, which provide a structured framework for the preparation of life cycle assessments. DIN EN ISO 14040 sets out principles and fundamentals, while DIN EN ISO 14044 includes specific requirements and guidelines.

In practice, various methods are used, including the ABC analysis, greenhouse gas balance and the Eco-Indicator 99, each of which uses different key figures and evaluation criteria. Standard values have been defined at European level in order to standardize the assessment of biofuels and regulate greenhouse gas emissions.

Properties
The LCA comprises various components and characteristics:
- Composition: analysis of all phases of a product life cycle, from raw material harvesting to disposal.
- Physical characteristics: Takes into account physical environmental factors such as emissions and energy consumption.
- Quality differences: Different LCAs may differ based on the methods and data used.
- Chemical characteristics: For biofuels, upstream environmental impacts are important in addition to combustion, e.g. indirect land use change (iLUC).

Application and significance in the market
Life cycle assessment is of central importance for evaluating and minimizing environmental impacts. In industry, it is used to analyze and improve the ecological efficiency of products and processes. Biofuels play a significant role here, as they have to meet specific requirements for reducing greenhouse gas emissions. In Europe, these fuels must achieve an emissions reduction of at least 50% compared to fossil fuels.

Differentiation from similar terms
Compared to related terms such as the greenhouse gas balance, the life cycle assessment focuses more comprehensively on all environmental impacts over the entire life cycle of a product. While the greenhouse gas balance looks specifically at emissions, the life cycle assessment takes additional environmental factors and processes into account.

Summary
The life cycle assessment is a systematic method for analyzing the environmental impact of products, processes and services over their entire life cycle. It covers all phases from raw material extraction to disposal and also takes into account upstream and downstream processes. Internationally standardized procedures such as ISO 14040 and 14044 promote uniformity in the assessment of environmental impacts. The life cycle assessment plays a particularly important role when considering biofuels, especially with regard to the required reductions in greenhouse gas emissions.