Selecting Extended Producer Responsibility Collection Mechanisms for Informal Packaging Collectors in Ghana: A Stakeholder-Stratified Multi-Criteria Case Study
Description
Extended producer responsibility (EPR) policies require producers to fund packaging recovery, yet how that funding should reach the informal, self-employed collectors who do most of the physical collection in developing-country cities remains unresolved. This case study of Ghana’s packaging sector develops a stakeholder-stratified decision model that combines a hierarchical Best-Worst Method, Fuzzy TOPSIS, and resampling-based rank probabilities to compare five payment mechanisms. Sixty stakeholders weighted five criteria clusters and rated each mechanism on fourteen criteria. An accredited aggregation depot ranks first in 99.8% of bootstrap resamples, ahead of a digital subsidy and a producer-underwritten price floor. It keeps this position under every robustness test, including a rule under which the least favorable stakeholder group decides. The mechanisms are ordered by rating, while the weights separate the groups. Itinerant buyers give the greatest weight to participation, above all their share of the benefit, and divide among the depot, the subsidy, and the price floor. Mechanisms that pay on weighed or photographed quantities rate higher on verification than those that do not. We derive a decision protocol and a staged pilot design for uncontracted collection systems.
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Institutions
- University of Electronic Science and Technology of ChinaSichuan, Chengdu