NRELの研究者が風力発電ブレードのリサイクル率向上への道筋を指摘(NREL Researchers Point to Path for Improved Wind Blade Recycling Rates)


2022-08-30 アメリカ国立再生可能エネルギー研究所(NREL)



風力関係者の使用済み製品に関する行動と風力発電ブレードの循環に与える影響の地域別表現 Regional representation of wind stakeholders’ end-of-life behaviors and their impact on wind blade circularity

Julien Walzberg,Aubryn Cooperman,Liam Watts,Annika L. Eberle,Alberta Carpenter,Garvin A. Heath
iScience  Published: August 19, 2022


•Spatial agent-based model adds behavioral factors to wind blades circularity study
•Logistical barriers and transportation costs significantly affect the results
•Recycling early adopters incite new social norms speeding up circularity transition


The growing number of end-of-life (EOL) wind blades could further strain US landfills or be a valuable composite materials source, depending on stakeholders’ behaviors. Technical solutions based on circular economy (CE) principles have been proposed but are not guaranteed to solve the issue of EOL management. Transitioning to CE implies changing how business models, supply chains, and behaviors deal with products and waste. A spatially resolved agent-based modeling combined with a machine-learning metamodel shows that including behavioral factors is crucial to designing effective policies. Logistical barriers and transportation costs significantly affect the results: lowering blade shredding costs by a third before transportation makes EOL blades a source of valuable materials, decreasing the 2050 cumulative landfill rate below 50%. In another scenario, parameter settings simulating policy interventions aiming at boosting early adoption incites new social norms favorable to recycling, lowering the cumulative landfill rate below 10%.