https://www.researchgate.net/publication/276136711_New_Tools_to_Capture_the_Elusive_Green_Consumer_Reviving_a_Revolution

You may download a paper that I wrote on green procurement that examines how the loci of control could influence procurement decision-making.

Article New Tools to Capture the Elusive Green Consumer: Reviving a Revolution

Thank you very much.

Have you considered examining the perceptions of leadership held by stakeholders within the environment first? You might find hot spots :)