In 2018 the Nordic Council of Ministers published a report urging more Nordic cooperation on environment and climate. The report proposes 12 recommendations, whereof more active sharing of knowledge and experience with green public procurement.The aim of this project was to develop cooperation between large Nordic cities in the form of a public buyer's network. The network was to conduct market dialogues on a selected area and promote environmental solutions. Gathering public contracting authorities with the same need and then challenge the market together is an effective way to create a larger market for newly developed solutions. The topic has been to work towards zero emission delivery of goods. From 2019 until the autumn of 2021 there have been various activities which you can read about in this report.