it should also be determined whether progress made would have been made without the negotiated target and hence whether public money could have been spent on more effective and ambitious programmes the costeffectiveness of such voluntary agreements needs to be thoroughly assessed and compared with other possible policy instruments to make sure that the instruments used are those that allow to achieve environmental objectives eg ghg emission reduction targets at the lowest cost all governmental institutions are required by law to develop green procurement policies define annual targets for the purchase of selected ecoproducts and annually report to moe