1. Ukusebenza okuqinile.Uphethiloli oyimbudumbudu ungasetshenziswa kabanzi ekukhiqizweni kwezimboni nezolimo, njengokukhiqiza amandla, ukufudumeza, ukushiswa kwebhayili, i-aluminium, ukomisa, i-gasification kanye nokuvutha, imboni yamakhemikhali, indwangu, njll.
2. Izindleko eziphansi kanye nenani eliphezulu.Ngevelu yekhalori ephezulu kanye nezindleko zokusebenzisa eziphansi kakhulu kunegesi yemvelo, udizili namandla kaphethiloli, iyindawo yamandla ahlanzekile kawoyela ekhuthazwa ngamandla wuhulumeni futhi inendawo yemakethe ebanzi.
3. Ukuhlanzeka kanye nokuvikelwa kwemvelo.Izinto ezivuthayo azinantuthu, azinambitheki, zihlanzekile futhi azihambisani nemvelo.I-sulphur, okuqukethwe komlotha kanye ne-nitrogen kuphansi kakhulu kunamalahle, uwoyela, njll. ngaphandle kokukhishwa kwe-carbon dioxide engu-zero, kungamandla ahambisana nendawo futhi ahlanzekile.