Want to Start something with 50-1cr investment in Green sector .

Just for the direction I tried some basic R&D about 1)CBG plant 2) Lithium ion battery recycling unit 3) Modernization of agri ( Turmeric specialization+ value addition) 4) E -waste recycling unit. I want to know what are the threats to these ideas , as I have already studied strengthen and weakness as well as opportunities. If anyone can share his/her thoughts it will help .