A multi-method approach to circular strategy design: Assessing extended producer responsibility scenarios through material flow analysis of PET plastic in Jakarta, Indonesia.

• Circular policies need to be aligned to circular and sustainability goals. • Circular policies should build upon pros and cons of a current linear system. • Assessment and scenario methods can be combined to inform circular policies. • Extended Producer Responsibility for PET plastic in Jakarta should be collective. • Extended producer responsibility should build on informal sector in waste management. [ABSTRACT FROM AUTHOR]