This paper studies the practice of environmental requirements in the allocation of public contracts (Green Public Procurement, GPP) under two different regulation periods. More specifically, the effect of GPP and revised regulation (including increased GPP ambitions) on competition, bids, and...

In this paper we evaluate whether spatial econometric techniques can be used to test for collusive bidder behavior in public procurement auctions, using the submitted bids and procurement characteristics. The proposed method is applied to the so-called Swedish asphalt cartel, which was...

Purpose The purpose of this paper is to analyze how local and central authorities choose between lowest price and more complex scoring rules when they design supplier-selection mechanisms for public procurements. Five hypotheses are tested: a high level of cost uncertainty and highly...