Absolute contraction approach
Absolute contraction approach is a target-setting method that reduces an entity's absolute greenhouse gas emissions along a defined contraction pathway. Applying Absolute contraction approach requires a stated emissions scope, inventory boundary, baseline, energy system, and assessment horizon. Those choices determine how Absolute contraction approach can be compared or acted upon.
In simple terms
In practical use, Absolute contraction approach is a target-setting method that reduces an entity's absolute greenhouse gas emissions along a defined contraction pathway. For Absolute contraction approach, the selected inputs, ordered steps, decision rule, assumptions, and limitations form part of the result within a declared emissions scope, inventory boundary, baseline, energy system, and assessment horizon. The pathway and base year matter; the method does not allocate reductions according to an entity-specific economic output measure. Absolute contraction approach connects with Science-based target and Climate adaptation; each can affect its application without sharing its definition. The candidate link between Absolute contraction approach and Mitigation potential remains a separate expansion question supported here by Science Based Targets initiative.
Why it matters
Absolute contraction approach matters because decisions about it determine which emissions enter an inventory, which transition option appears credible, and how progress is compared over time. A defensible use of Absolute contraction approach therefore exposes its boundary, method, evidence, responsible actor, and uncertainty before a conclusion is accepted. That discipline keeps Science-based target and Climate adaptation from being treated as proof of Absolute contraction approach when their criteria, scope, or results differ.
Example
An emissions and energy team evaluates Absolute contraction approach for a defined decision and records the relevant emissions scope, inventory boundary, baseline, energy system, and assessment horizon. For Absolute contraction approach, the team uses cited material from Science Based Targets initiative to structure the analysis and follow its ordered steps, documenting the period, data, assumptions, and comparison with Science-based target. It treats Climate adaptation and Mitigation potential as separate questions rather than proxies for Absolute contraction approach.
How it differs
Science-based target
Absolute contraction approach is a method; Science-based target has a different function. Evidence for Science-based target does not establish Absolute contraction approach unless both sets of applicable criteria are met.